土壤2017，Vol.49Issue(2)：393-399,7.DOI:10.13758/j.cnki.tr.2017.02.027
渭河两岸缓冲带的土壤有机质含量分布特征及其影响因子
Distribution Characteristics and Influential Factors of Soil Organic Matter Content at Buffer Zone Along Weihe River
摘要
Abstract
In order to provide theoretical bases for the rational management and remediation of ecological environment along the Weihe River in Shaanxi, this study targeted at 3000 m-buffer zone along the Weihe River and the spatial distribution characteristics of soil organic matter (SOM) content and its influential factors were analyzed by field survey and laboratory measurement with the application of GIS, ENVI, SPSS and other software. Results showed that SOM content was low along the Weihe River, meanly ranged from 6.3 to 22.5 g/kg; On both north and south sides along the Weihe River, SOM content increased within 1000 m away from the river bank, and then reduced or remained unchanged outside 1000 m range; The average SOM content was highest in upstream, followed by downstream and by midstream. Topographic factors (elevation, slope), NDVI and soil particle composition were influential factors of SOM. SOM had positive correlations with elevation, NDVI and silt percentage, while it had negative correlations with slope and silt percentage.关键词
渭河/缓冲区/土壤有机质/影响因子Key words
The Weihe River/Buffer zone/Soil organic matter (SOM)/Influential factors分类
农业科技引用本文复制引用
张枝枝,张福平,燕玉超,王虎威..渭河两岸缓冲带的土壤有机质含量分布特征及其影响因子[J].土壤,2017,49(2):393-399,7.基金项目
国家科技支撑计划项目(2012BAC08B07)、国家人力资源和社会保障部留学人员科技活动项目择优资助项目和陕西师范大学中央高校基本科研业务费科研发展专项(GK201505112)资助. （2012BAC08B07）
