摘要
秦巴地区在我国生态保护中具有重要的战略意义,其生态分区可为生态系统管理和自然资源可持续利用提供科学依据。针对秦巴地区存在的水污染、水土流失和地质灾害等生态环境问题,以该地区的地形特征、植被状况、气候条件和人类活动因子等作为生态分区指标,并采用主成分分析的定量分析方法,建立了指标体系。利用GIS技术中的空间分析和叠加分析技术,将秦巴地区划分成3个一级分区、5个二级分区和11个三级分区。依据分区结果,对各个分区的生态特征及问题进行了分析,提出了生态环境保护建议。
Eco-regionalization provides a scientific basis for eco-system management and sustainable utilization of natural resources.Qinling-Dabashan mountainous region has a strategic role in ecological protection of China.In view of the problems of water pollution,soil-water loss and geological disaster etc.in Qinling-Dabashan mountainous region,the landform feature,vegetation state,climate condition and human activities are taken as the indexes of eco-regionalization,and the index system for eco-regionalization is established by principal component analysis method.By using GIS spatial analysis technology and spatial overlay technology,the region is divided into three first-level zones,five second-level zones and eleven third-level zones.Based on the eco-regionalization results,the characteristics of each eco-region are analyzed and the management suggestions aiming at the ecological problems of each eco-region are put forward.
出处
《人民长江》
北大核心
2013年第13期76-80,共5页
Yangtze River
基金
国家"高等学校学科创新引智计划"(B08037)
关键词
主成分分析
生态问题
生态分区
秦岭-大巴山区
principal component analysis
eco-problem
eco-regionalization
Qinling-Dabashan mountainous region
