Mountain Agriculture and Crop Genetic Resources

Total Page:16

File Type:pdf, Size:1020Kb

Mountain Agriculture and Crop Genetic Resources 4 3D z 2- IORC Ub. Mountain Agriculture and Crop Genetic Resources Editors K.W. RILEY, N. MATEO, G.C. HAWTIN and R. YADAV OXFORD & IBH PUBLISHING CO. PVT. LTD. New Delhi Bombay INTERNATIONAL WORKSHOP on MOUNTAIN AGRICULTURE AND CROP GENETIC RESOURCES (February 16-191987, Kathmandu, Nepal) Organised by: MINISTRY OF AGRICULTURE, HMG NEPAL INTERNATIONAL DEVELOPMENT RESEARCH CENTRE (IDRC) and INTERNATIONAL CENTRE FOR INTEGRATED MOUNTAIN DEVELOPMENT (ICIMOD) ©1990 INTERNATIONAL DEVELOPMENT RESEARCH CENTRE ISBN 81-204-0472-6 Published by Mohan Primlani for Oxford & IBH Publishing Co. Pvt. Ltd., 66 Janpath, New Delhi 110001, typeset at Scanset and printed at Rajbandhu Industrial Co., New Delhi. 1-N9-10 FOREWORD The fundamental characteristic of mountain agriculture in each mountain system throughout the world is its extreme internal variability and complex- ity, with a multiplicity of highly localised micro eco-systems providing the habitats for many unique crop varieties and animal species. This precious diversity of genetic resources, now threatened by a combination of pressures, is clearly one of the key factors in the long-term sustainability of mountain agriculture on marginal lands is often the most difficult and intractable environments. This valuable and vulnerable biological diversity in mountain eco-systems has constituted over the centuries the essential natural asset on which mountain communities have depended for their very survival. This present volume of papers presented by the scientists who participated in a unique International Workshop on Mountain Agriculture and Crop Genetic Resources, held in Kathmandu in February 1987, may be regarded as an important but certainly initial exploration of these highly significant issues in the much-neglected subject of mountain farming systems. Though the Workshop concentrated on these issues in the vast Hindu Kush-Himalaya Region, participation by agricultural scientists from the Andes Mountain in South America and from the mountain systems of Africa and Southeast Asia was a most important, and indeed unique feature of the Workshop discussions which is well reflected in both in the earlier Workshop Summary Report and in this volume providing the full and edited versions of the Workshop papers. The Workshop on which the volume is based was jointly organised by the International Centre for Integrated Mountain Development (ICIMOD), the International Development Research Centre of Canada (IDRC) and by the Ministry of Agriculture of His Majesty's Government of Nepal. From this modest but exciting beginning, major new and very promising initiatives in the field of mountain agriculture are already becoming firmly established. With major funding support from the Asian Development Bank and the Ford Foundation, ICIMOD has been able to mobilise a large-scale international programme of research and policy analysis on mountain farming systems (with the study of crop genetic resources as a key component). This three-year programme is focused primarily on the diverse eco-systems of the Hindu Kush-Himalaya but will increasingly involve the systematic exchange of knowledge and expertise, and desirably of genetic resources, with fellow vi scientists in South America, Africa and Southeast Asia. IDRC and ICIMOD have already been able to continue this knowledge exchange, begun at this Workshop, by organising a first study tour in the Andes Mountains by specialists on mountain agriculture from the Himalayas, and supporting these participants at the Andean Crops Network meeting held in Quito, Ecuador in June 1988. It is to be hoped that these vital programmes of international research and information exchange on mountain farming systems will now be rapidly accelerated in the vital interests of mountain communities everywhere. In the meantime, on behalf of the joint sponsors of this most useful Workshop, I would like to express our thanks to all the contributors to this volume of scientific papers - and to all those, most notably to Ken Riley of IDRC Canada, who have worked so hard both in the organisation of the Workshop and in the arduous but rewarding tasks associated with the editing and publication of the papers which are here presented. Colin Rosser Director, ICIMOD PREFACE This book contains the proceedings of a workshop organised in Kathmandu in February 1987, which brought together agricultural scientists working in mountain regions around the world - from the Andes, the Himalaya, and highland areas in East Africa, North Africa and the Middle East, as well as Thailand. The idea of the meeting developed as a result of HMG of Nepal, ICIMOD, and IDRC's interest and experience in mountain agriculture. In the past, IDRC has supported several research and development projects in the high Andes, the Himalayas and Ethiopia. At present, this support is being maintained and even expanded to some extent. ICIMOD's mandate is clearly geared to a better understanding and sustained development of mountain regions. HMG of Nepal is dedicating considerable efforts to the conservation and increased productivity of the vast hill areas of the country. The Workshop opened with descriptions of the broad geographic features and farming systems of each mountain region, then proceeded to the crop genetic resources of a given region and their importance in sustainable and productive mountain farming systems. Tremendous diversity in micro-environments and farming systems, as well as in crops, land races, and varieties grown by farmers in each mountain region was evident. Nevertheless, striking similarities were noted when the various regions were compared. For example, there are many common components in the traditional and originally sustainable farming systems that are now coming under increased pressure due to population growth and land use. The great diversity of crop genetic resources in these mountain regions was recognised as a primary means for improving production and sustainable agricultural systems in mountain regions. The workshop stressed that improved methods of describing these environ- ments, in order to better understand crop adaptation, and more efficient mechanisms of exchanging crop genetic resources, were essential first steps toward effective collaboration among scientists and farmers in these different regions. A step in this direction was taken in June 1988, when a group of Himalayan agricultural scientists participated in the Andean Crops Work- shop in Quito, Ecuador and saw for themselves some of the Andean agricul- tural systems. This book is divided into four sections: 1. The physical features and the farming systems in each of the mountain regions represented. 2. Description of crop genetic resources. 3. Comparison of aspects of Andean, Himalayan and Ethiopian highland agriculture. 4. Summary of discussions and recommendations. Two papers that could not be presented at the workshop are included in this book: 'Potatoes, Genetic Resources and Farmers Strategies' by R.F. Rhoades, and 'Konso Agriculture and Its Plant Genetic Resources' by J.M. Engels. We hope this book will be of use not only to those scientists who attended the workshop, but to all those interested in a more productive and sustainable mountain agriculture. Our deep appreciation is extended to His Excellency Rajouri, Minister of Agriculture, His Majesty's Government, Nepal, for opening the workshop. We are most grateful to Drs. Collin Rosser and colleagues and staff at ICIMOD for developing the workshop schedule and making the excellent arrange- ments for the workshop itself. Dr. Tej Partap of ICIMOD, and Dr. Ken Mackay of IDRC greatly assisted in technical editing. K.W. Riley N. Mateo G. C. Hawtin R. Yadav CONTENTS Foreword : Colin Rosser v Preface vii Introduction : G.C. Hawtin and N. Mateo 1 PART 1: MOUNTAIN PHYSICAL ENVIRONMENTS AND FARMING SYSTEMS Chapter 1 Environmental Diversity and Its Influence on 9 Farming Systems in the Hindu Kush-Himalayas P.L. Maharajan, B. Bhadra, P. Roy, R.P. Yadav and Zhang Rongsu hapter 2 Agricultural Systems of Xizang 3 Cheng Hong Chapter 3 Mountain Farming Systems in Nepal 51 M.P. Panth and J.C. Gautam Chapter 4 Agriculture in Bhutan 69 D.R. Ghalley Chapter 5 High Mountain Environment and Farming Systems 75 in the Andean Region of Latin America N. Mateo and M. Tapia Chapter 6 Tropical African Mountains and Their Farming 105 Systems Amare Getahun Chapter 7 Mountain Environments and Farming Systems 125 in West Asia and North Africa G.R. Potts and G.C. Hawtin PART 2: MOUNTAIN CROP GENETIC RESOURCES hapter 8 Indigenous Cereal Crop Genetic Resources 47 in Mountain Areas of Pakistan Rashid Anwar and M.S. Bhatti x Chapter 9 Fruit Crop Genetic Resources in the Northern 153 Mountains of Pakistan : Collection and Conservation M.S. Bhatti and Rashid Anwar Chapter 10 Status of Finger Millet in the Mountain 159 Agricultural System of Himachal Pradesh, India Surinder K. Mann and Inderjeet Singh Chapter 11 Exploring Under-exploited Crops of the 165 Himalayan Mountain Agriculture : Chenopods Tej Partap Chapter 12 Crop Genetic Resources of the Nepalese 185 Mountains A.N. Bhattarai, B.R. Adhikary and K.L. Manandhar Chapter 13 Mountain and Upland Agriculture and Genetic 201 Resources in Thailand Chantaboon Sutthi Chapter 14 Konso Agriculture and Its Plant Genetic 217 Resources J.M.M. Engels Chapter 15 Native Andean Crops in the High Mountain 227 Agriculture of Ecuador J. Tola Cevallos, C. Nieto, E. Parolta and R. Castillo Chapter 16 Andean Phytogenetic and Zoogenetic Resources 235 M. Tapia and N. Mateo Chapter
Recommended publications
  • Rain Shadows
    WEB TUTORIAL 24.2 Rain Shadows Text Sections Section 24.4 Earth's Physical Environment, p. 428 Introduction Atmospheric circulation patterns strongly influence the Earth's climate. Although there are distinct global patterns, local variations can be explained by factors such as the presence of absence of mountain ranges. In this tutorial we will examine the effects on climate of a mountain range like the Andes of South America. Learning Objectives • Understand the effects that topography can have on climate. • Know what a rain shadow is. Narration Rain Shadows Why might the communities at a certain latitude in South America differ from those at a similar latitude in Africa? For example, how does the distribution of deserts on the western side of South America differ from the distribution seen in Africa? What might account for this difference? Unlike the deserts of Africa, the Atacama Desert in Chile is a result of topography. The Andes mountain chain extends the length of South America and has a pro- nounced influence on climate, disrupting the tidy latitudinal patterns that we see in Africa. Let's look at the effects on climate of a mountain range like the Andes. The prevailing winds—which, in the Andes, come from the southeast—reach the foot of the mountains carrying warm, moist air. As the air mass moves up the wind- ward side of the range, it expands because of the reduced pressure of the column of air above it. The rising air mass cools and can no longer hold as much water vapor. The water vapor condenses into clouds and results in precipitation in the form of rain and snow, which fall on the windward slope.
    [Show full text]
  • Oasis America, Mesoamerica Y Aridoamerica
    OASISAMERICA, MESOAMERICA Y ARIDOAMERICA En el transcurso de los siglos, las prácticas culturales y las condiciones del medio ambiente propiciaron en algunas zonas el desarrollo de la agricultura como fuente principal de subsistencia y con ello, se definieron alrededor de 2500 a.C. dos grandes áreas o superáreas culturales: Aridoamérica y Mesoamérica. En el primer espacio la fuente principal de vida siguió siendo la caza y recolección, mientras que en Mesoamérica la vida se hizo sedentaria con base en la agricultura. Con el paso del tiempo, alrededor de 500 a.C., por la mejora de las técnicas de cultivo y de riego y el intercambio cultural parte de Aridoamérica (Suroeste de los E.U. y el Noroeste de México) fue ocupada por pueblos sedentarios. Esta región con cultura mixta se le conoce como Oasisamérica. Fue el antropólogo Paul Kirchhoff quien conceptualizó en 1943 estas tres grandes áreas geográficas-culturales: Aridoamérica, Oasisamérica y Mesoamérica. Queremos destacar que se trata de conceptos y que estas áreas no eran inmutables, sino en constante transformación de acuerdo con el desarrollo de las sociedades. Oasisamérica En algunas regiones semiáridas, haciendo uso de algunos ríos como el Gila y el Asunción en Arizona, los pobladores no quedaron en el nivel del nomadismo gracias a la adopción de nuevas técnicas e instrumentos de trabajo y el intercambio con las culturas mesoamericanas. Así, dentro de Aridoamérica se empezó a distinguir, alrededor de 500 a.C., un área cultural que se conoce como Oasisamérica. Se ubica en parte de los territorios actuales de Arizona, Nuevo México y California en los E.U.
    [Show full text]
  • To Check out Katie's Project Regarding Smallholder Organic Farmers in Cusco, Peru
    Executive Summary This paper will explore the topic of connecting smallholder organic farmers in the Cusco region of Peru to local markets, with a focus on tourist restaurants and hotels. Research was conducted in the summer of 2018, which included interviews with local smallholder farmers (referred to as Ricardo, Hugo, Veronica, Juanita, and Cynthia in the following sections) and restaurant and hotel owners, in addition to a survey of over 200 tourists. This research, in addition to a thorough literature review, revealed many challenges that smallholder farmers are facing in the region, as well as opportunities to address these challenges. It will review topics including food sovereignty, the economic context of agriculture in Peru, environmental issues, public health, the valuation of traditional knowledge in agriculture, stigmas of farmers, and rural to urban migration. It will discuss the role that EcoHuella, the demonstration agroecology farm of the local NGO Andean Alliance, is playing to address these issues. The vision of EcoHuella, in accordance with many of the others farmers interviewed, is the liberation of smallholder farmers. One avenue to achieving this liberation, which calls for more autonomy, agency, and self-esteem for these farmers, is through local market access. The following sections will explain how market access can address these challenges in order to achieve farmer liberation. Introduction Smallholder farmers in Peru in the Sacred Valley and surrounding highland communities, owning farms with 5 hectares of land or less, have seen radical changes to their practices and livelihoods in the past several decades, including environmental, public health, economic, agricultural, and sociocultural shifts.
    [Show full text]
  • Integrated Pest Management of the Mexican Rice Borer in Louisiana and Texas Sugarcane and Rice Francis P
    Louisiana State University LSU Digital Commons LSU Doctoral Dissertations Graduate School 2005 Integrated pest management of the Mexican rice borer in Louisiana and Texas sugarcane and rice Francis P. F. Reay-Jones Louisiana State University and Agricultural and Mechanical College, [email protected] Follow this and additional works at: https://digitalcommons.lsu.edu/gradschool_dissertations Part of the Entomology Commons Recommended Citation Reay-Jones, Francis P. F., "Integrated pest management of the Mexican rice borer in Louisiana and Texas sugarcane and rice" (2005). LSU Doctoral Dissertations. 761. https://digitalcommons.lsu.edu/gradschool_dissertations/761 This Dissertation is brought to you for free and open access by the Graduate School at LSU Digital Commons. It has been accepted for inclusion in LSU Doctoral Dissertations by an authorized graduate school editor of LSU Digital Commons. For more information, please [email protected]. INTEGRATED PEST MANAGEMENT OF THE MEXICAN RICE BORER IN LOUISIANA AND TEXAS SUGARCANE AND RICE A Dissertation Submitted to the Graduate Faculty of the Louisiana State University and Agricultural and Mechanical College in partial fulfillment of the formal requirements for the degree of Doctor of Philosophy in The Department of Entomology by Francis P. F. Reay-Jones B.S., Université Bordeaux 1, 1999 M.S., Université d’Angers/Institut National d’Horticulture, 2001 August 2005 ACKNOWLEDGEMENTS I wish to express my gratitude to my major advisor, Dr. Thomas E. Reagan, for his guidance, motivation, and also for introducing me with great enthusiasm to LSU football and Cajun cuisine. I would like to express my appreciation to my graduate committee, Drs. Benjamin L Legendre, E.
    [Show full text]
  • PERFORMANCE REPORT State: Louisiana Project Number: W-55-25 Project Title: Upland Survey Period Covered: July 1, 2010
    PERFORMANCE REPORT State: Louisiana Project Number: W-55-25 Project Title: Upland Survey Period Covered: July 1, 2010 - June 30, 2011 Study Number and Title: V-4, Bobwhite Fall Whistling Surveys Study Objective: To determine relative size and distribution of bobwhite populations in Louisiana. Study Abstract Bobwhite fall whistling counts were conducted statewide along 32 routes (7 additional routes were assumed zeros and 4 others were unable to be run). Fall whistling counts did not differ (P = 0.3482) among the 5 habitat types for 2010. They did, however, differ between 2009 and 2010, with more whistling counts detected in 2009 than in 2010 for both the Northwest mixed shortleaf and loblolly pine-hardwood and Florida Parishes loblolly pine habitats. No coveys were recorded on the Northwest mixed shortleaf and loblolly pine- hardwood or Mississippi/Atchafalaya agricultural belt (0.00 whistles/stop) in 2010 (Tables 1 and 2). Jackson- Bienville WMA, Camp Beauregard, and Vernon District No. 1 routes yielded 0.25, 0.00, and 0.10 whistles/stop, respectively (Table 3). Five (5) summer bobwhite counts were conducted on the Sandy Hollow Wildlife Management Area. Counts ranged from 12-45 (Figure 1). The 2011 mean count was 27.6, which is the same as in 2010. The peak count (45) was lower than the long-term (1986-2010) average peak count of 89.3, but was higher than 8 of the past 10 years (Figure 2). A. Activity: Fall whistling counts were conducted along 37 pre-selected routes to determine relative size and distribution of fall bobwhite populations. The 5 habitat types surveyed were historic longleaf pine, mixed shortleaf and loblolly pine-hardwood, loblolly pine (Florida Parishes), the rice belt and the Mississippi/Atchafalaya agricultural belt.
    [Show full text]
  • Federal Democratic Republic of Nepal
    FEDERAL DEMOCRATIC REPUBLIC OF NEPAL MINISTRY OF IRRIGATION MINISTRY OF AGRICULTURE DEVELOPMENT FEDERAL DEMOCRATIC REPUBLIC OF NEPAL NEPAL AGRICULTURE RESEARCH COUNCIL MINISTRY OF IRRIGATION MINISTRY OF AGRICULTURE DEVELOPMENT NEPAL AGRICULTUREPREPARATORY RESEARCH SURVEY COUNCIL ON JICA'S COOPERATION PROGRAM FOR AGRICULTUREPREPARATORY AND RURAL SURVEY DEVELOPMENT IN NEPALON JICA'S COOPERATION PROGRAM - FOODFOR AGRICULTURE PRODUCTION ANDAND AGRICULTURERURAL DEVELOPMENT IN TERAI - IN NEPAL - FOOD PRODUCTION AND AGRICULTURE IN TERAI - FINAL REPORT MAIN REPORT FINAL REPORT MAIN REPORT OCTOBER 2013 JAPAN INTERNATIONAL COOPERATION AGENCY OCTOBER(JICA) 2013 JAPAN INTERNATIONALNIPPON KOEI COOPERATION CO., LTD. AGENCY VISION AND SPIRIT(JICA) FOR OVERSEAS COOPERATION (VSOC) CO., LTD. NIPPON KOEI CO., LTD. C.D.C. INTERNATIONAL CORPORATION VISION AND SPIRIT FOR OVERSEAS COOPERATION (VSOC) CO., LTD. 4R C.D.C. INTERNATIONAL CORPORATION JR 13 - 031 FEDERAL DEMOCRATIC REPUBLIC OF NEPAL MINISTRY OF IRRIGATION MINISTRY OF AGRICULTURE DEVELOPMENT FEDERAL DEMOCRATIC REPUBLIC OF NEPAL NEPAL AGRICULTURE RESEARCH COUNCIL MINISTRY OF IRRIGATION MINISTRY OF AGRICULTURE DEVELOPMENT NEPAL AGRICULTUREPREPARATORY RESEARCH SURVEY COUNCIL ON JICA'S COOPERATION PROGRAM FOR AGRICULTUREPREPARATORY AND RURAL SURVEY DEVELOPMENT IN NEPALON JICA'S COOPERATION PROGRAM - FOODFOR AGRICULTURE PRODUCTION ANDAND AGRICULTURERURAL DEVELOPMENT IN TERAI - IN NEPAL - FOOD PRODUCTION AND AGRICULTURE IN TERAI - FINAL REPORT MAIN REPORT FINAL REPORT MAIN REPORT OCTOBER 2013 JAPAN INTERNATIONAL
    [Show full text]
  • R&D-FIAN Parallel Information Nepal
    Reference: The Second Periodic Report (Art.1-15) of Nepal to the Committee on Economic, Social and Cultural Rights (UN Doc. E/C.12/NPL/2) Parallel Information The Right to Adequate Food in Nepal (Article 11, ICESCR) Submitted at the occasion of the 38th session of the Committee on Economic, Social and Cultural Rights (30 April - May 2007) by FIAN International, an NGO in consultative status with ECOSOC, working for the right to feed oneself and Rights & Democracy, a Canadian institution in consultative status with ECOSOC working to promote the International Bill of Human Rights. - 1 - Table of Contents I. Preliminary remarks p.3 II. The situation of the Right to Food in Nepal p.4 III. Legal Framework of the Right to Food in Nepal p.16 IV. Illustrative cases of violations of the Right to Food p.22 V. Concluding remarks p.27 VI. Recommendations to the CESCR p.28 Annex I - Description of the International Fact-Finding Mission p.29 Annex II - List of Acronyms p.37 - 2 - I. Preliminary remarks The present document is presented to the Committee on Economic, Social and Cultural Rights as parallel information to the second periodic report of Nepal to the CESCR. The submitting organizations would like to acknowledge the opportunity given by the CESCR procedures and share with the Committee the first findings of two research projects which have been carried out by Rights & Democracy and FIAN International. 1. The Fact-Finding Mission to Nepal (coordinated by Rights & Democracy) The first measure is the Fact-Finding Mission (FFM) which took place from 8 to 20 April 2007 and was organized by the Canadian institution Rights & Democracy in collaboration with the Right to Food Research Unit at the University of Geneva, FIAN International and the Food and Agriculture Organisation (FAO).
    [Show full text]
  • Base Paper for the Committee on Development of Hill States
    Base paper for the Committee to Study Development in Hill States arising from Management of Forest Lands Rita Pandey April 2012 National Institute of Public Finance and Policy New Delhi Contents 1. Introduction and Issues 1.1.1 General Issues 1.1.2 Persistent Poverty and Marginalization of Hill States 1.1.3 Lack of mountain specific development perspective and policies, and sound governance 1.1.4 Unclear Property Rights, Emerging Market for Ecosystem Services 1.1.5 Challenges in valuation of and lack of compensation for Ecosystem Goods and Services 1.2 Issues Related to Infrastructure in Hill States 1.2.1 North East Region (NER) States 1.2.2 Western Region Himalayan States 2. Status of Forests in Hill States 2.1 Estimates of Wasteland in India and Hill States 3. Forest Management Policies and Laws 3.1 Forest Management in Special Areas 3.2 Cross-Sectoral Linkages 3.3 Reducing Emissions from Deforestation and Forest degradation (REDD) 3.4 Compensatory Afforestation Fund Management and Planning Authority 4. The FCA, 1980 4.1 Basic Features 4.2 Organizational Set Up For Implementation of FCA 4.3 Functions of Regional Offices 4.4 Procedure for Grant of Approval under FCA, 1980 4.5 Earlier Recommendations/Observations/Proposals to speed up the approvals in this context 4.6 Approvals under FCA, 1980: Assessing the Performance 5. Views, Demands and Proposals of State Governments 5.1 Responses received from the hill states by this Committee 5.2 Based on the responses of the hill states to THFC 6. Strategy for Infrastructure Development References Tables Chart Annexure Base paper for the Committee to Study Development in Hill States arising from Management of Forest Lands 1.
    [Show full text]
  • CCN Characteristics During the Indian Summer Monsoon Over a Rain- Shadow Region Venugopalan Nair Jayachandran1, Mercy Varghese1, Palani Murugavel1, Kiran S
    https://doi.org/10.5194/acp-2020-45 Preprint. Discussion started: 3 February 2020 c Author(s) 2020. CC BY 4.0 License. CCN characteristics during the Indian Summer Monsoon over a rain- shadow region Venugopalan Nair Jayachandran1, Mercy Varghese1, Palani Murugavel1, Kiran S. Todekar1, Shivdas P. Bankar1, Neelam Malap1, Gurunule Dinesh1, Pramod D. Safai1, Jaya Rao1, Mahen Konwar1, Shivsai 5 Dixit1, Thara V. Prabha1, 1Indian Institute of Tropical Meteorology, Pune, India. Correspondence to: V. Jayachandran ([email protected]) Abstract. Continuous aerosol and Cloud Condensation Nuclei (CCN) measurements carried out at the ground observational facility situated in the rain-shadow region of the Indian sub-continent are illustrated. These observations were part of the 10 Cloud-Aerosol Interaction Precipitation Enhancement EXperiment (CAIPEEX) during the Indian Summer Monsoon season (June to September) of 2018. Observations are classified as dry-continental (monsoon break) and wet-marine (monsoon active) according to air mass history. CCN concentrations measured for a range of supersaturations (0.2-1.2 %) are parameterized using Twomey’s empirical relationship. CCN concentrations even at low (0.2 %) supersaturation (SS) were high (>1,000 cm- 3) during continental conditions associated with high black carbon (BC~2,000 ng m-3) and columnar aerosol loading. During 15 the marine air mass conditions, CCN concentrations diminished to ~350 cm-3 at 0.3 % SS and low aerosol loading persisted (BC~900 ng m-3). High CCN activation fraction (AF) of ~0.55 (at 0.3 % SS) were observed before the monsoon rainfall, which reduced to ~0.15 during the monsoon and enhanced to ~0.32 after that.
    [Show full text]
  • Semiarid Ethnoagroforestry Management: Tajos in the Sierra Gorda, Guanajuato, Mexico Vincent M
    Hoogesteger van Dijk et al. Journal of Ethnobiology and Ethnomedicine (2017) 13:34 DOI 10.1186/s13002-017-0162-y RESEARCH Open Access Semiarid ethnoagroforestry management: Tajos in the Sierra Gorda, Guanajuato, Mexico Vincent M. Hoogesteger van Dijk1, Alejandro Casas1 and Ana Isabel Moreno-Calles2* Abstract Background: The semi-arid environments harbor nearly 40% of biodiversity, and half of indigenous cultures of Mexico. Thousands of communities settled in these areas depend on agriculture and using wild biodiversity for their subsistence. Water, soil, and biodiversity management strategies are therefore crucial for people’s life. The tajos, from Sierra Gorda, are important, poorly studied, biocultural systems established in narrow, arid alluvial valleys. The systems are constructed with stone-walls for capturing sediments, gradually creating fertile soils in terraces suitable for agriculture in places where it would not be possible. We analyzed biocultural, ecological, economic and technological relevance of the artificial oasis-like tajos, hypothesizing their high capacity for maintaining agricultural and wild biodiversity while providing resources to people. Methods: We conducted our research in three sections of the Mezquital-Xichú River, in three communities of Guanajuato, Mexico. Agroforestry management practices were documented through semi-structured and in-depth qualitative interviews. Vegetation composition of local forests and that maintained in tajos was sampled and compared. Results: Tajos harbor high agrobiodiversity, including native varieties of maize and beans, seven secondary crops, 47 native and 25 introduced perennial plant species. Perennial plants cover on average 26.8% of the total surface of plots. Tajos provide nearly 70% of the products required by households’ subsistence and are part of their cultural identity.
    [Show full text]
  • Spatial and Temporal Patterns of Erosion in Western China and Tibet
    Spatial and Temporal Patterns of Erosion in Western China and Tibet Amanda C. Henck A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy University of Washington 2010 Program Authorized to Offer Degree: Geological Sciences In presenting this dissertation in partial fulfillment of the requirements for the doctoral degree at the University of Washington, I agree that the Library shall make its copies freely available for inspection. I further agree that extensive copying of this dissertation is allowable only for scholarly purposes, consistent with “fair use” as prescribed in the U. S. Copyright Law. Requests for copying or reproduction of this dissertation may be referred to ProQuest Information and Learning, 300 North Zeeb Road, Ann Arbor, MI 48106- 1346, 1-800-521-0600, to whom the author has granted “the right to reproduce and sell (a) copies of the manuscript in microform and/or (b) printed copies of the manuscript made from microform.” Signature__________________________ Date______________________________ University of Washington Abstract Spatial and Temporal Patterns of Erosion in Western China and Tibet Amanda C. Henck Chairs of the Supervisory Committee: David R. Montgomery, Professor Department of Earth and Space Sciences Bernard Hallet, Professor Department of Earth and Space Sciences Two parallel debates are ongoing about how tectonics and climate interact to set erosion rates and how humans alter these erosion rates; these issues form the basis for my dissertation. Using the eastern margin of the Tibetan Plateau as a natural laboratory to inform these two debates, I conduct detailed studies of millennial and decadal erosion rates in southwest China and southeast Tibet, focusing specifically on the Three Rivers Region (TRR) as well as other rivers in Tibet and Yunnan.
    [Show full text]
  • Sundials for Urban Farming in an Early Inca City
    Universal Journal of Agricultural Research 2(3): 107-114, 2014 http://www.hrpub.org DOI: 10.13189/ujar.2014.020305 Sundials for Urban Farming in an Early Inca City Uwe Christian Plachetka University of Natural Resources and Life Sciences (BOKU), Vienna, Austria *Corresponding Author: [email protected] Copyright © 2014 Horizon Research Publishing All rights reserved. Abstract Information systems are essential for farming the methods of these indigenous farmers promote “response agriculture”. The famous IntiWatanas, the Inca an increase in crop diversity to avoid adverse effects of sundials were a technological detail of “response agriculture” inbreeding (Brush 2004). The Andean highlands and their as the development of the Inca Empire was a matter of traditional farmers harbor the genetic reserves for potatoes coping with the challenges of the Medieval Climatic (solanum tuberosum spp.), Quinoa (Chenopodia quinoa) Anomaly in the Central Andean Highlands. Such archaic and a wide range of other nutritive crops. Consequently the but smart techniques can be understood only when intervention of the last pre-European government of Peru, considered in their original socio-ecologic context. that of the Incas in agricultural systems and food production is palpable, which does matter for a proper understanding of Keywords Urban Farming, Inca, Sundial, Ecologic diversity-promoting agricultural systems and response Management agriculture because the Incas had to face the challenges of the Medieval Climatic Anomaly(MCA) (Haberle S.G., Chepstow-Lusty
    [Show full text]