CHEN Wanxu,LI Jiangfeng,JIANG Wei,et al.Impacts of Land Use Change on Ecosystem Service Values Based on RS and GIS in Western Mountainous Area of He’nan Province[J].Research of Soil and Water Conservation,2018,25(01):376-381.
豫西山区土地利用变化对生态服务价值的影响
- Title:
- Impacts of Land Use Change on Ecosystem Service Values Based on RS and GIS in Western Mountainous Area of He’nan Province
- Keywords:
- ecosystem services; evaluation system; equivalent table correcting; land use change; Luanchuan County
- 分类号:
- F301.2
- 摘要:
- 利用豫西山区栾川县2005年、2010年、2014年3期Landsat TM影像，运用监督分类与人机交互解译的方法提取2005—2014年的土地利用变化数据，并以谢高地等制定的中国陆地生态系统服务价值当量表为基础，结合栾川县实际情况，对生态系统服务价值当量表进行了修正，估算了栾川县14个乡镇土地利用变化对生态系统服务价值的影响及其变化情况。结果表明：（1）研究期间栾川县的耕地、林地、草地变化不显著，建设用地面积呈现不断增加趋势，水域面积则表现出先增加后减小的态势；（2）2005—2010年栾川县生态服务价值大幅度增加，到2014年生态服务价值总额则降回至2005年水平；（3）各地类生态服务总价值敏感系数均小于1，由大到小排序为林地、水域、草地、耕地，林地对生态系统服务价值的贡献率最高，耕地最低，生态服务价值对生态服务功能指数缺乏弹性，研究结果是可信的。
- Abstract:
- Landsat TM images of three periods containing years of 2005, 2010 and 2014 in the western mountainous area of Luanchuan county were used to extract the land use change data by using supervised classification and man-computer interactive interpretation method. Based on the scale of Chinese land ecosystem service value put forward by Xie Gaodi, in combination with the practical situation of Luanchuan County, we revised the equivalent table of ecosystem service values and calculated the effects of land use change of 14 towns in Luanchuan County on ecosystem service value sand the changes. The results showed that:(1) during the period of study, the changes of cultivated land, forest land and grassland areas of Luanchuan County were not significant, the construction land area showed the increasing trend, and water area increased first and then decreased; (2) the ecological service value of Luanchuan County increased dramatically from 2005 to 2010, it went back down to the level of 2005 in 2014; (3) every sensitivity coefficient of land ecological service value was less than 1; the sensitivity coefficient decreased in the order:forestland > water area > grassland > farmland, and the contribution of woodland to ecosystem service value was the highest, while the contribution rate of farmland was the lowest. Ecological service value was lack of elasticity to ecosystem service function indexes, and the results were credible.
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备注/Memo
收稿日期:2017-2-6;改回日期:2017-3-12。
基金项目:中国地质调查局地质调查项目（12120115051101）；中国地质大学（武汉）公共管理学院学生科技创新活动孵化基金（Y20161007）
作者简介:陈万旭(1989-),男,河南信阳人,博士生,主要研究方向为资源环境、区域经济。E-mail:cugcwx@sina.com
通讯作者:李江风(1957-),男,湖北武汉人,教授,博士生导师,主要研究方向为土地利用规划、国土资源调查评价及地质公园规划。E-mail:jfli0524@163.com