摘要
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。
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 eco- system service value in Ledu District are computed and analyzed. Comparing the CS of ecosys- tem 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 val- ue 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.
出处
《大连民族大学学报》
2017年第1期6-10,共5页
Journal of Dalian Minzu University
基金
青海民族大学理工自然科学项目(2015XJZ23)
关键词
土地利用
生态系统服务价值
敏感性分析
乐都区
land- use changes
ecosystem service value
sensitivity analysis
Ledu District
