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.
Highlights
Ecosystem services refer to all the benefits that mankind obtains from the ecosystem, including supply services, regulatory services, cultural services and support services [1]
Based on the analysis of land use dynamic change, ecosystem service value estimation and impact of land use on ecosystem service value change in Dujiangyan City from 2010 to 2016, we can see that: (1) The change of land use in Dujiangyan city is large, the extension expansion of construction land is the main increasing part, the forest land is the second, the rest are reduced, which indicates that Dujiangyan city is in the stage of rapid urbanization and has the trend of the overdeveloping tourist area
The overall land use intensity is low, indicating that the potential benefits of land resources in Dujiangyan City have not been brought into full play, the land use efficiency still needs to be improved, and the land use mode needs to be changed
Summary
Ecosystem services refer to all the benefits that mankind obtains from the ecosystem, including supply services, regulatory services, cultural services and support services [1]. Land use refers to a series of biological and technological means adopted by human beings to carry out long-term or periodic management, governance and transformation of land, according to the natural characteristics of land and for certain economic and social purposes [2]. Using the data of land use data in 2010 ~ 2016 Dujiangyan city, using the equivalent factor method, the dynamic change of land use and ecosystem services value in qualitative and quantitative analysis, and reference and scientific basis for the decision of land use in Dujiangyan, help to promote ecological protection and reasonable development of the tourist area in Dujiangyan, maintain the stability of the Dujiangyan city ecosystem services, and realize the social, economic, ecological sustainable development strategy
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