乐都区土地利用变化对生态系统服务价值影响研究

基于乐都区2009-2015年社会经济数据,运用土地利用变化模型、当量因子法及敏感性分析,结合乐都区实际情况,计算与分析乐都区土地利用变化特征、生态系统服务价值,对研究区各地类与地类面积变化、土地利用程度、气温、GDP的敏感性系数进行比较,进而得出土地利用对生态环境影响的量化结果。研究发现:土地利用程度变化量和变化率呈正值,乐都区土地利用在研究期内处于发展期;生态系统服务价值总体上呈增长趋势,气温和地类面积变化与各地类的生态系统服务价值敏感度系数较高;林地对乐都区生态系统服务价值起决定性作用。

Research on Influence of Land Use Changes on Ecosystem Service Value in Ledu District

Based on socio-economic data in Ledu District from 2009 to 2015, using change model of land-use, theory of evaluation index system and the sensitivity analysis, combined with the actual situation of Ledu District, the characteristics of land-use changes and the ecosystem service value in Ledu District are computed and analyzed. Comparing the CS of ecosystem service values to changes of land-use, land-use degree, temperature and GDP, the quantified results of land-use effects for ecological environment are obtained. The results show that the amount and rate of the land-use changes are positive, which means that the land-use in Ledu District is in developing period. The overall trend of ecosystem service value is growing. The CS of ecosystem service value to temperature and changes of land-use are higher .The forest land plays a decisive role in the ecosystem service value in Ledu District.