WEI Wei,SHI Peiji,ZHOU Junju,et al.Land Ecological Sensitivity Evaluation of Shiyang River Basin Based on Zonal Statistics[J].Research of Soil and Water Conservation,2015,22(06):240-244.
基于区统计方法的石羊河流域土地生态敏感性评价
- Title:
- Land Ecological Sensitivity Evaluation of Shiyang River Basin Based on Zonal Statistics
- 分类号:
- Q149
- 摘要:
- 以石羊河流域为研究区，以遥感数据为基础数据源，采用ArcGIS区统计方法进行土地生态敏感性评价，通过构建石羊河流域水土流失、土壤盐渍化、土壤沙漠化、生物多样性四个定量评价指标，利用栅格叠置分析方法定量研究了石羊河流域土地敏感性特征，生态敏感性等级及影响因素。研究结果表明，极敏感和高敏感区占到了全流域总面积的74.68%，低度敏感区和不敏感区分别占石羊河流域总面积的10.59%和0.88%。最后，针对石羊河流域土地生态敏感性分区的特点，通过综合研究结果和相关资料提出了环境保护和生态建设的相关对策，为指导石羊河流域生态治理提供科学依据。
- Abstract:
- Shiyang River basin was chose as the study area, on the basis of remote sensing data sources, ArcGIS zonal statistical method was adopted to improve the land ecological sensitivity evaluation through building the water loss, soil erosion, soil salinization, desertification and soil biodiversity as quantitative evaluation indexes. The land sensitivity characteristic and influence factors of Shiyang River basin were analyzed using raster overlay analysis. The results show that the extremely and highly sensitive area of the basin accounts for 74.68% of total area; the low sensitivity and insensitivity area accounts for 10.59% and 0.88% of total area, respectively. Finally, in view of the characteristics of land ecological sensitivity division of Shiyang River basin, some policies are proposed according to the research results and other materials in order to provide some scientific evidences for ecological management of Shiyang River basin in the future.
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备注/Memo
收稿日期:2014-10-20;改回日期:2014-11-09。
基金项目:国家自然科学资助项目（41261104）；国家社科基金青年项目（12CTJ001）；甘肃省青年科技基金计划项目（1107RJYA077）
作者简介:魏伟(1982-),男,甘肃庄浪人,博士,讲师,从事生态遥感和GIS的应用研究。E-mail:weiweigis2006@126.com
通讯作者:石培基(1962-),男,甘肃临洮人,博士,教授,从事区域规划与土地生态敏感评价研究。E-mail:shipj@nwnu.edu.cn