湖南生态科学学报2023，Vol.10Issue(4)：53-61,9.DOI:10.3969/j.issn.2095-7300.2023.04.008
黑河沉积物氮、磷和有机质的空间分布特征及来源解析
Spatial Distribution Features and Origin Analysis of Nitrogen,Phosphorus and Organic Matter in Heihe River Sediments
摘要
Abstract
[Objective]In order to study the spatial distribution features of sediment nutrients and an-alyze the pollution organics in Heihe River Basin.[Method]The Multivariable linear regression model and Redundancy analysis method were used to quantitatively analyze the explanatory degree of nutrients and the explanatory ability of variation of land use types at different buffer scales.[Result]The average contents of TP,TN,NO3-N,NH3-N and TOC in sediments of Heihe River Basin were 224.83,245.32,55.76,30.25 and 8.42 mg/kg.It showed that the contents of TN and TP were higher in the natural reaches of the middle reaches,but lower in the natural reaches of the upper reaches.Land use types at all scales are closely related to sediment nutrient content.[Conclusion]This study clarifies the building land and shrub land are the main sources of TOC and NO3-N in sediments of the Heihe River Basin,which can provide reference for the ecological environment protection and management of Heihe River Basin.关键词
黑河流域/沉积物/营养盐/土地利用/线性模型/冗余分析Key words
Heihe River Basin/sediments/nutrient salt/land use/linear model/redundant analysis分类
资源环境引用本文复制引用
孔德星,姚天欣,波兰汗·开肯..黑河沉积物氮、磷和有机质的空间分布特征及来源解析[J].湖南生态科学学报,2023,10(4):53-61,9.基金项目
新疆维吾尔自治区公益性科研院所基本科研业务经费资助项目(KY2022128). （KY2022128）
