水土保持通报2016，Vol.36Issue(5)：278-282,293,6.DOI:10.13961/j.cnki.stbctb.2016.05.051
青海湖流域河流生态系统评价指标间的相关性
Correlation Among Evaluation Indexes of River Ecosystem in Qinghai Lake Basin
摘要
Abstract
Objective] T he objective of this study is to study correlation among the ecological characteristics of riparian meadows ,riparian soil properties and river water quality ,in order to provide a solid basis for the evaluation of river ecosystem in Qinghai Lake basin .[Methods] Along altitudinal gradient of main rivers in the field ,we collected water samples ,riparian topsoil samples and investigated vegetation characteristics , and analyzed samples in laboratory .[Results] The 18 evaluation indexes of river ecosystems exhibited the certain regularity along elevation gradient in Qinghai Lake basin .Obvious correlation existed among the eval‐uation indexes of the riparian vegetation ,surface soil and river water quality .Significant positive correlation was found between chemical oxygen demand(COD) and Pb ,coverage and soil organic matter content (SOC) , biomass and richness(p<0 .01) ,while significant negative correlation found between the riparian soil sandy grains and river water nitrogen content ,soil salt content and coverage ,sand grains and richness(p<0 .01) . The principal component analysis indicated that the COD ,soil organic matter ,vegetation coverage and As can be used to evaluate river ecosystems .[Conclusion] T he negative impacts of human activities had emerged on the riparian meadow ecosystem . To achieve sustainability of regional ecological , social and economic development ,the grassland stocking rates must be decreased and unnecessary construction projects reduced .关键词
青海湖流域/河岸植被/河岸土壤/河流水质/相关性Key words
Qinghai Lake basin/riparian vegetation/riparian soil/river quality/correlation分类
资源环境引用本文复制引用
李少华,王学全,高琪,兰岚,杨占武..青海湖流域河流生态系统评价指标间的相关性[J].水土保持通报,2016,36(5):278-282,293,6.基金项目
国家自然科学基金重点项目“青海湖流域生态水文过程与水分收支研究”（41130640）；林业公益性行业科研专项“戈壁生态系统长期定位观测研究” （）
