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Studies on Geographic Distribution of Wild <Em>Poa University of Kentucky UKnowledge XXI International Grassland Congress / VIII International Grassland Congress Proceedings International Rangeland Congress Studies on Geographic Distribution of Wild Poa pratensis Population and Its Community Type in Yangtze, Yellow and Lancang River Source Region Shihai Yang Qinghai Academy of Animal and Veterinary Sciences, China Y. S. Ma Qinghai Academy of Animal and Veterinary Sciences, China Q. M. Dong Qinghai Academy of Animal and Veterinary Sciences, China J. J. Shi Qinghai Academy of Animal and Veterinary Sciences, China Y. L. Wang Qinghai Academy of Animal and Veterinary Sciences, China See next page for additional authors Follow this and additional works at: https://uknowledge.uky.edu/igc Part of the Plant Sciences Commons, and the Soil Science Commons This document is available at https://uknowledge.uky.edu/igc/21/1-6/6 The XXI International Grassland Congress / VIII International Rangeland Congress took place in Hohhot, China from June 29 through July 5, 2008. Proceedings edited by Organizing Committee of 2008 IGC/IRC Conference Published by Guangdong People's Publishing House This Event is brought to you for free and open access by the Plant and Soil Sciences at UKnowledge. It has been accepted for inclusion in International Grassland Congress Proceedings by an authorized administrator of UKnowledge. For more information, please contact [email protected]. Presenter Information Shihai Yang, Y. S. Ma, Q. M. Dong, J. J. Shi, Y. L. Wang, L. Sheng, and X. D. Sun This event is available at UKnowledge: https://uknowledge.uky.edu/igc/21/1-6/6 Multifunctional Grasslands in a Changing World Volume Ⅰ 瞯 2 55 瞯 ] Studies on geographic distribution of wild Poa pratensis population and its community type in Yangtze ,Yellow and Lancang river source region S .H .Y ang ,Y .S .M a ,Q .M .Dong ,J .J .Shi ,Y .L .W ang ,L Sheng and X .D .Sun Qinghai A cademy o f A nimal and Veterinary Sciences ,No .１ Wei摧er Road ,Biological Industry Garden District ,X ining , Qinghai ,China ,Postcode ８１００１６ ,E‐mail :Shihai ＿ Y ang＠ yahoo .com .cn Keywords : Poa p ratensis ,geographic distribution ,community type ,Yangtze ,Yellow and Lancang river source region Introduction Poa p ratensis P .p ratensis belonged to herbage plPan.tp,rwahnitcehnsoisriginated from Europe and northern Asia . distributed widely temperature zone of northern hemisphere . ２００３ whose rhiPzo.mpersataenresisvery strong is a kind of rhizome plant ,the ability to usurp on others space is much better ( Ma , ) .Nowadays , plant was used to pioneer plant seed to grazing lands ,being artificial rangeland and rebuild deteriorated grassland .But the study report on geographic distribution and plant community in Yangtze ,Yellow and Lancang river( short for YYLR) source region is much less .The objective of this study was to provide scientific reference value for further study . Materials and methods ３１°３９′ ～ ３６°１６′ ８９°２４′ ～ １０２°２３′ Our study site was in YYLR source region( N , E) of the east and southeast of Qinghai province . The administrative area include Yushu Tibetan Autonomous Prefecture ,Guoluo Tibetan Autonomous Prefecture ,Zeku County and Henan County of Huangnan Tibetan Automonous１P６refecture ,To１ngde County and Xinghai County of Hainan Tib３e６ta６n４０A０uto２nomous Prefecture and Tanggula Township which are county and township ,and total land area in this region is k‐m .The climate in this region is dominated b‐y４S℃ou～th３ea℃st monsoon and high pressure o２f６S０ib～er７ia７０and soil is alpine meadow coarse loam . The mean annual air temperature is ,and annual precipitPati.opnraitsensis mm . We choosed primarily six principal samples and six associated samples of typical distribution of wild ５０p×op５u０lati２on with three replications in every sample５０.T×h５e０hei２ght ,coverage ,density and underground biomass were measured by ５０ × ５c０m ２square frame in principal sample within m area ,and height and coverage measured in associated sample within cm area . Meanwhile ,the altitude ,longitude and altidude were recorded with Global Positioning System ,and slope direction and degree were measured by compass instrument . Results P .p ratensis ９６°３０′２４ ９６″ １００°５７′３１ ２″ ３３°０７′２９ ３４″ ３４° ４６′１２ ９″The wild d４°is２t４r′ib６ut２e４d″from １.°３８′E４３to５６″ . E of longitude ,between . N３３a６n５d ～ ４５００ . N whose span were . of longitude , . of latitu＋de ,respectively .The range of al＋titude is m m .There are tw＋elve plant community types that w＋ ere P .pratensis Geraniu＋m spp . , P .pratensis E＋lymus nutans , Potentilla , an＋serina P .pratensis ,Lig＋ularia , virgaurea P .pratensis＋, P .anserina Aconitum ,＋ tanguticum ‐P .pratensis , Deyeuxia＋spp P .pratensis , E .nutan＋s P .pratensis , Carex moocroftii P＋.pratensis , P .pratensis Capsella１bursa pastoris , P . anserina P L.p .rvaitregnusrisea , ３P４畅.p６r３ate２n４s畅is２５ ２P６o畅ly１g２on１u３m畅４,６si８b畅i９ri７cum１８畅,P２７.fr６u畅t０ic８os１a１畅４S０cir４p７u畅s４０, d３i畅st７ig４m２a９t畅ic５u６s (３T畅a６b９le ) . The important value of is , , , , , , , , , , , respectively in every community . Table1 G rassland ty pe o f each site . site grassland type P .p ratensis ＋ Geranium sp p . Jimai Tow nship ,Dari County P .p ratensis ＋ Elymus nutans ,Potentilla Jianshe T ow nship ,Dari County Potentilla anserina ＋ P .p ratensis M anzhang T ow nship ,Dari County L igularia v ir gaurea ＋ P .p ratensis M ulong Gama ,Kequ Tow nship ,Gande County P .anserina ＋ A conitum tanguticum ＋ P .p ratensis M ulong Wanma ,Kequ Tow nship ,Gande County Deyeux ia sp p . ＋ P .p ratensis Longge mountain ,Suohu Rima T ow nship ,Jiuzhi County 摧 E .nutans ＋ P .p ratensis Zhang e vally ,Suohu Rima Tow nship ,Jizhi County Carex moocro f tii ＋ P .p ratensis Daw u T ow nship ,M aqin County P .p ratensis ＋ Capsellabursa － p astori Hebei T ow nship ,T ongde County P .anserina ＋ L .v irgurea sJielong T ow nship ,Yushu County P .p ratensis ＋ Poly gonum sibiricum Jielong Tow nship ,Yushu County P .f ruticosa ＋ Scir p us distigmaticus Jielong Tow nship ,Yushu County Conclusions P .p ratensis Based on preliminary investigation on the field ,the wild is a kind of wide ecPol.opgricaatelnsspiesctrum species . It could be suitable for growing in the shrub meadow ,river bank ,mountain slope and under forest . population were basically dominatedPsp.pecriaetsenasnisd secondary species in each plant community .So we can rehabilit‐ate degraded alpine meadow by scattering seeds of in order to change community succession stage that reached sub extreme community or extreme community . Reference ２００３ Poa Ma p,Yrat.Sen.s,iLsi C,Yhi.nFes.e,LQain,Dgh.aZi .J,Loui r,Qna.lYo.f ,WA nanimg a,Ll a.Ynd. V,Sehtier,Jin.Jar.y&DScoinegnc,eQs .３M６‐.(７ ) .Study on cultivation and tame of . , , . Grasslands/Rangelands Resources and Ecology ——— Ecology of Grasslands/Rangelands.
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