摘要
在遥感和GIS技术的支持下,以2000年和2010年两期Landsat TM/ETM+影像解译数据为基础,分析长白山地区近10a土地利用变化情况。应用Costanza生态系统服务价值计算公式,采用谢高地等人的中国陆地生态系统单位面积生态服务价值表,并对其作适当修订后进行该区生态系统服务价值变化的计算。结果表明:10a间,长白山地区土地利用发生了较大变化,旱田、建筑用地面积呈增加趋势,水田、林地、水域和湿地面积呈减少趋势;生态系统服务价值由2000年的1 507.37亿元减少到2010年的1 505.57亿元,减少幅度为0.12%;生态系统各单项服务功能价值呈减少趋势,水源涵养、气体调节功能的价值减少剧烈;敏感性指数小于1,研究结果可信。
Based on the data of Landsat TM/ETM＋,this paper analyzed land use change and examined their effects on ecosystem service value in the region of Changbai Mountain from 2000 to 2010 by using RS and GIS.The methods were based on ESV computing formula and ESV coefficients.The following results and conclusions could be obtained.From 2000 to 2010,the area of dry farmland and construction land increased,while paddy field,woodland,wetland,and water body decreased.The total value of ecosystem services of the study area declined from 1.507×1011 Yuan in 2000 to 1.505×1011 Yuan in 2010,with the net decline of 1.79×108 Yuan during the 10-year period.Water conservation,climate regulation decreased acutely.The sensitivity index was less than 1,which showed that these estimates were relatively robust.
出处
《水土保持研究》
CSCD
北大核心
2012年第6期242-246,共5页
Research of Soil and Water Conservation
基金
国家自然科学基金(41061042)
矿山空间信息技术国家测绘局重点实验室项目(KLM201114)
