E3S Web of Conferences 165, 02024 (2020) https://doi.org/10.1051/e3sconf/202016502024 CAES 2020 Effect of Land Use Change on Ecosystem Service Value in Dujiangyan City Min Liu1, Shimin Wen2 and Chuanjiang Zhang3 1School of business, Sichuan Agricultural University, Chengdu, 611800, Sichuan, China 2School of business, Sichuan Agricultural University, Chengdu, 611800, Sichuan, China 3School of business, Sichuan Agricultural University, Chengdu, 611800, Sichuan, China Abstract: In order to evaluate the impact of land use change on ecosystem service value in Dujiangyan City, through equivalent factor method, qualitative and quantitative analysis is carried out on the dynamic change of land use change and its caused ecosystem service value in Dujiangyan City from 2010 to 2016. The results show that: (1) Dujiangyan city land use changes a large extent, with the extension of construction land expansion as the main increase part, and at the cost of the reduction of arable land and grassland area. (2) Over the past 7 years, the total value of ecosystem services in Dujiangyan city followed a law of first rising and then falling, showing an overall rising trend, with a total increase of 19.2244 million yuan. (3) The accuracy of the ecological value coefficient of woodland and grassland will greatly affect the value assessment of ecosystem services in Dujiangyan city. (4) From the relationship between land use type and ecosystem service value, cultivated land and construction land are negatively correlated with ecosystem service value, on the contrary, forest land, grassland, water area and construction land are positively correlated with ecosystem service value. In general, the land use of Dujiangyan City did not cause obvious damage to the ecological environment, but also cannot ignore the impact of land use changes on the environment in the process of economic development. It is necessary to control the growth of construction land area, promote the conservation and rational development of Eco-tourism area in Dujiangyan City, maintain the stability of ecosystem services in Dujiangyan City, and realize the strategy of sustainable development of Social-Economic-Ecological benefits. 1 Introduction quantitative analysis, and reference and scientific basis for the decision of land use in Dujiangyan, help to Ecosystem services refer to all the benefits that mankind promote ecological protection and reasonable obtains from the ecosystem, including supply services, development of the tourist area in Dujiangyan, maintain regulatory services, cultural services and support services the stability of the Dujiangyan city ecosystem services, [1]. Land use refers to a series of biological and and realize the social, economic, ecological sustainable technological means adopted by human beings to carry development strategy. out long-term or periodic management, governance and transformation of land, according to the natural characteristics of land and for certain economic and 2 Research Area Profile social purposes [2]. Although land use will bring great Dujiangyan city is located on the northwestern edge of economic benefits to human beings, the unreasonable the Chengdu plain, the Minjiang mountain pass, because artificial changes of land use and landscape pattern will of the world famous water conservancy project greatly affect the value of ecosystem services. The Dujiangyan and the Chinese Taoist birthplace of Mount sustainable development of man and nature will be Qingcheng has long been well-known; the city border threatened if man unilaterally pursues economic benefits east with Pengzhou, Pidu district, Wenjiang district, west and ignores the potential utility of ecosystem in the and north with Wenchuan county, south of Chongzhou process of utilizing and transforming ecosystem. On the city; 48 kilometers from Chengdu. In 2018, the city basis of Costanza et al. 's study, Chinese scholar Gaodi covers an area of 1208 square kilometers; it has Xie et al. [3] obtained the scale of ecosystem service jurisdiction over 5 sub-district offices, 13 towns, 1 value in China, which is the basis for studying the value township, 1 economic development zone; the household of land ecosystem service. Therefore, using the data of registration population is 622200, the resident population land use data in 2010 ~ 2016 Dujiangyan city, using the is 696900, the urbanization rate is 60.2%; the birth equivalent factor method, the dynamic change of land population is 5965, the death toll is 4625, and the natural use and ecosystem services value in qualitative and population growth rate was 2.09‰. Dujiangyan city is a *Corresponding author’s e-mail: [email protected] © The Authors, published by EDP Sciences. This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/). E3S Web of Conferences 165, 02024 (2020) https://doi.org/10.1051/e3sconf/202016502024 CAES 2020 city with a history of more than 2000 years, because of U −U 1 the weir, because of the water and prosperity of the city; K = a b 100% in the Neolithic period is the ancient Shu ancestors live U a T （ 1） in the area, is one of the birthplaces of ancient Shu. The formula can be intuitively reflected in the period Dujiangyan city this city to mountain, water, forest, weir, 2010-2016, Dujiangyan City land use changes. bridge integrated, fully reflect the city has water, water in the city, " irrigation city water color half city mountain 3.2.2. Value Evaluation of Ecosystem Services in "layout characteristics, this has a" worship water Dujiangyan City Dujiangyan, ask Qingcheng Mountain " reputation. May 8, 2007, Qingchengshan-Dujiangyan scenic spots were (1) Modelling. In this paper, we will adopt the method rated as the national AAAAA class tourist attractions. In based on the value equivalent factor per unit area, that is, 2012, the city's GDP exceeded 20.818 billion yuan. the equivalent factor method [4] [5]. And the current Dujiangyan City's 1996 GDP was 4.93 billion yuan, and equivalent factor method is a static method, which by 2009 its GDP had reached 11.66 billion yuan. In 2012, cannot reflect the dynamic change of ecosystem service Dujiangyan's gross regional product (GDP) was 20.818 value in time and space. Therefore, based on the billion yuan, up 13.6 percent from its 2011 GDP. equivalent factor method of Xie Gaodi et al, according to Dujiangyan City achieved an increase of 2.199 billion the preliminary investigation of the team and the yuan in the primary industry, 4.5 percent over 2011, and collection of all kinds of literature and data, the an increase of 7.617 billion yuan in the secondary equivalent factor correction was carried out to determine industry, 17.8 percent over 2011. The three industries the corresponding ecosystem service value equivalent increased by 11.002 billion yuan, up 12.6 percent from factor table in Dujiangyan City (Table 1), thus 2011. The proportion of the first, second and third establishing the ecosystem service value evaluation industries is 10.6:36.6:52.8, and the contribution rate of model of Dujiangyan City. In this paper, the ecosystem the three industries to economic growth is 3.6%,47.6% service value (yuan) of Dujiangyan city is set as ESV; and 48.8%, respectively. The added value of the private the area of the k-type land use area (hm2) in Dujiangyan 2 economy in Dujiangyan City was 13.086 billion yuan, an city is Ak; the value coefficient (yuan/hm ) is VCk, increase of 16 percent over 2011. indicating the service value of the unit area of the k-type land use area in Dujiangyan city; Sk represents the biomass factor adjustment coefficient, and Sn represents 3 Data and Methods the social economic factor adjustment coefficient based on the residents' willingness to pay and the ability to pay. 3.1. Sources of data Represents the following: = ( ) The land-use data used are from the survey of land-use ESV Ak VCk Sk Sn (2) change statistics carried out by the Land and Resources (2) Equivalent Factor Correction Bureau of Dujiangyan City from the second national land ① Value of food production service per unit area of survey in 2007. According to the national land use farmland ecosystem. The economic value of grain classification standard, combined with the geological and provided by En for per unit area of farmland in geomorphological characteristics of Dujiangyan City, the Dujiangyan City is set; P means the average price of land use type of Dujiangyan City is divided into six first- grain crops in the nth year of Dujiangyan City, Qn is the class land types, such as cultivated land, woodland, total yield of all grain crops in the nth year of grassland, water area, construction land and unused land. Dujiangyan City; Mn is the cultivated land area in the nth Socio-conomic data for the period 2010-2016 are derived year of Dujiangyan City, as follows: from the Chengdu Statistical Yearbook and the China 1 Statistical Yearbook. En = (PQn / M n ) 7 (3) ② Biomass factor. The adjustment of biomass factor 3.2. Research Methods in this paper assumes that the biomass of Dujiangyan city is linearly related to the value of ecosystem service. Set 3.2.1. Land use change in Dujiangyan City Sk to represent the biomass factor coefficient of Dujiangyan city, NPPs to represent the net first sex This paper uses land use dynamics to study the land use productivity of vegetation in Dujiangyan city, NPPg to change in Dujiangyan City, the research period is 2010- indicate the net first sex productivity of vegetation in the 2016. In order to study the quantitative changes of whole country, then it is expressed as: various land use types in Dujiangyan, K is set as the quantitative changes of certain land use dynamics in the NPPs Sk = study period in Dujiangyan City.