CHEN Shu,JU Wei-min,LI Xian-feng.Effects of Land Use Change on Ecological Service Value in Changshu City[J].Research of Soil and Water Conservation,2009,16(05):93-97.
常熟市土地利用变化对生态服务价值的影响
- Title:
- Effects of Land Use Change on Ecological Service Value in Changshu City
- 分类号:
- F301.24
- 摘要:
- 采用计算机自动分类和人工目视解译相结合的方法，对常熟地区1991年、2001年、2006年的三期Landsat TM影像进行了土地利用分类，获取了主要土地利用类型信息，并计算了生态服务价值。结果表明，1991-2001年，常熟市的城镇用地显著扩张，湿地和林地面积有所增加，而耕地面积大大减少，生态服务价值有所下降；2001-2006年，城镇用地进一步扩张，耕地和林地面积锐减，湿地面积显著增加，生态服务价值显著增加。分析土地利用变化对生态服务价值的影响可以为科学、合理地进行土地利用，保持生态系统的平衡，以及人口、资源、环境的可持续发展提供决策支持。敏感性分析表明，生态服务价值对生态服务价值系数的变化是缺乏弹性的，因此结果是可信的。
- Abstract:
- Land use types were classified through the combination of computer automatic classification and manual interpretation based on the Landsat TM images acquired in 1991,2001,and 2006.Information of land use types was acquired and then ecological service value was estimated.The results showed that the land use in Changshu changed considerably during the period from 1991 to 2006.Town and construction land increased intensively,wetland and forest increased a little,while crop land decreased evidently.The ecological service value declined a little.During the period of 2001 and 2006,the town and construction land was further expanded,wetland area increased notably,while crop land and forest decreased a lot.Analyzing the effects of land use change on ecological service value can provide support for scientific and reasonable land use,keep the balance of ecosystem,as well as the sustainable development of population,resources and environment while making decisions.Coefficient of sensitivity analysis showed that the ecological service value was not sensitive to the change of ecological service value coefficient.So the result was credible.
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备注/Memo
收稿日期:2009-4-2;
基金项目:“十一五”科技支撑项目（2006BAJ10B03）
作者简介:陈姝(1984-)，女，江苏盐城人，研究方向为遥感和GIS技术在土地利用变化及其生态效应评价中的应用。E-mail：magicsue123@yahoo.com.cn