内蒙古鄂尔多斯市达拉特旗土地利用结构变化对生态系统服务价值的影响

Effects of Land Use Structure Changes on Ecosystem Service Value: A Case Study of Dalateqi, Erdos

研究目的:在土地利用变化背景下,探讨内蒙古鄂尔多斯市达拉特旗生态系统服务价值变化。研究方法:数理统计、遥感与GIS、模型模拟。研究结果:基于1985年、2000年、2008年和2011年的土地利用数据分析达拉特旗的土地利用结构变化,并在此基础上对生态系统服务价值变化进行定量评价。研究结论:达拉特旗的主要土地利用类型是草地、农田和森林,1985年以来土地利用类型的分配趋向均衡化;研究期间达拉特旗生态系统服务价值总体上呈现先升后降的趋势;达拉特旗的主要生态服务功能是废物处理、水源涵养、土壤形成与保护、生态多样性保护和气候调节,主要生态服务功能年际变化不大。

The purpose of this paper is to analyze the impacts of land use structure changes on ecosystem service value under the background of land-use change. Research methods are statistics, remote sensing, GIS and model simulating. Based on the land use data in 1985, 2000, 2008 and 2011, respectively, the land use changes of Dalateqi were analyzed, and the value of ecosystem services was evaluated quantitatively. The research conclusions include that the main land use types in Dalateqi are grassland, farmland and forest. The distribution of land use types became more balanced since 1985. During the study period, the total value of ecosystem services in Dalateqi first increased and then decreased. Grain policies promoted the value of ecosystem services in the study area. However, the city＇ s rapid expansion and exploitation of coal resources occupied a large part of ecological land, and caused the value of ecosystem services reduced. The main ecosystem services in Dalateqi were waste management, water conservation, soil formation and protection, biodiversity conservation and climate regulation. The interannual variability of main ecosystem services in Dalateqi was not significantly except climate regulation.The value of ecosystem services in climate regulation significantly reduced because of the wetland area reduction