ZHOU Tao,LI Tian-hong.Influence of Land Use/Cover Changes on Ecosystem Services in Shaanxi Province before and after Returning Farmland to Forest/Grass[J].Research of Soil and Water Conservation,2014,21(01):246-250.
陕西省退耕还林(草)前后LUCC对生态系统服务的影响
- Title:
- Influence of Land Use/Cover Changes on Ecosystem Services in Shaanxi Province before and after Returning Farmland to Forest/Grass
- Keywords:
- land use/cover change; returning farmland to forest/grass land; ecosystem service; Shaanxi Province
- 分类号:
- X826
- 摘要:
- 基于1980s，1995年，2000年和2005年四期的土地利用矢量数据，借助ArcGIS技术，对退耕还林（草）前后的陕西省土地利用状况和生态系统服务价值进行了评估；进而借助SPSS探讨了土地利用程度对生态系统服务价值的影响。结果表明：相比于改革开放初期，退耕还林（草）前陕西省土地利用程度增加，而后随着退耕还林（草）的实施又逐步下降，生态系统服务价值在退耕还林（草）前后的变化趋势则与之相反。经线性拟合检验，退耕还林（草）前后4个年份陕西省各县土地利用程度综合指数与单位面积生态系统服务价值的相关系数绝对值均超过0.7，且在0.01水平上显著，说明二者之间存在较强的负相关性。
- Abstract:
- Based on land use data from 1980s, 1995, 2000 and 2005 representing the initial stage of Reforming and Opening Policy, before and after the Returning Farmland to Forest/Grass Project respectively, land use degree and ecosystem service values in Shaanxi Province were assessed with the help of ArcGIS. SPSS was also used in order to explore the effect of land use degree on ecosystem service values. The results showed that land use degree index of Shaanxi Province increased before Returning Farmland to Forest/Grass and decreased after it compared with the initial stage of Reforming and Opening, while the total value of ecosystem service decreased firstly and then kept on increasing. The linear fitting test showed that the absolute value of correlation coefficient between land use degree index and ecosystem service values per unit area was greater than 0.7, which reflected the negative correlation between them.
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备注/Memo
收稿日期:2013-04-18;改回日期:2013-05-30。
基金项目:国家自然科学基金项目“基于NDVI的流域产流产沙快速预测与尺度效应”（50979003）
作者简介:周涛(1985-),男,山东临沂人,硕士,主要研究方向为水土保持生态效益,水资源与水沙环境。E-mail:zt8183738@gmail.com
通讯作者:李天宏(1970-),男,陕西富平人,博士,副教授,主要研究方向为3S技术在水土资源/环境方面的应用、LUCC及其生态环境效应。E-mail:lth@pku.edu.cn