A Study Of The Impacts Of Land Use Types Change On Ecosystem Services In Yucheng District

Land use is the closest link between human and nature, land use and land covertypes change inevitably influence ecosystem structure and functions, and through life biogeochemistry cycle causes atmospheric composition change, further causes the global climate change. Therefore, the process of land use types change to maintenance ecosystem services is decisive, doing research on ecosystem services under land use types change have an important meaning.Since 2000, returning farmland to forestry is implemented in Yucheng District, there were severe variations in land use types. This article takes Yucheng District as the study region, based on land use types data from 2000 to 2005, with market value approach, shadowing pricing method, shadowing engineering method and opportunity cost method et al to measure the value cropland, forest, grass and waters system services, including food production and raw material, eco-tourism, water holding, soil conservation, air purification, waste treatment and maintenance of biodiversity, to point out effects of land use types change on ecosystem services. Through the research, main conclusions below are drawn:(1) The total value of ecosystem services has been increased from 2000 to 2005 in Yucheng District, implementing of returning farmland to forestry is a key role, this indicates that reasonable mankind's activity can improve and promote the ecosystem services.(2) Life-support functions of different ecosystem type has significant difference in Yucheng District, the value unit area of forest ecosystem life-support functions is biggest. It's 3.16 times of cropland and 1.94 times of grass, so people must recognize that forest ecosystem occupy a foundation and important position in the whole ecosystem, then strengthen the management of returning farmland to forestry project. (3) Land use types change not only change the type and quantity of ecosystem services supplied to human but also arise the change in value composition ratio of ecosystem services. The change of ecosystem services value and actually ecological environment is basically consistent, so we can lead ecosystem services value into dynamic monitor of ecological environment.(4) The annual average increasing ratio of ecosystem services value is 7.13% from 2000 to 2005, but the annual average increasing ratio of GDP is 10.56%. This indicates that the ecological construction speed is smaller than economic development, so we should enlarge ecological construction strength.(5) The increased quantity of eco-tourism to the total ecosystem services value growth contribution rate is 40.96% from 2000 to 2005.Based on moderating the relations between development and protection, enlarge developing eco-tourism, make the ecological value of ecosystem services to covert continuously into economic value.