摘要
在对长江上游现有植物篱-坡耕地系统中土壤抗冲、抗蚀性及土壤理化性质的测定的基础上,对坡耕地-植物篱系统抗冲性和抗蚀性特征及其与土壤理化性质的关系进行了研究,结果表明:(1)3种不同植物篱带内土壤抗蚀性和抗冲性指数得到显著改善,土壤抗蚀性在植物篱系统中、植物篱带上、带内、带下和植物篱带间坡耕地表现出一定的差异性;(2)土壤抗冲性与总孔隙度、土壤体积含水量、饱和导水率、水稳性团聚体、土壤粘粒含量、土壤有机质、土壤容重、土壤抗蚀指数等土壤理化性质指标呈显著的相关关系。利用回归方法建立了土壤抗冲性(即土壤抗冲性指数)模型,土壤抗冲性指数与土壤性质各指标的模型具有极显(P<0.01)著相关性。
To study the characteristics of the soil anti-scourability and anti-erodibility and relation between soil anti-scourability and other soil physiochemical properties,the soil anti-scourability,anti-erodibility and other soil physiochemical index under hedgerow systems involving different species in upper reaches of Yangtze River were tested.The result revealed that,（1） comparing with those between hedgerows,the soil anti-scourability within the hedgerows improved significantly.The anti-erodibility were significantly different among the soil under hedgerow systems.（2） Under hedgerow systems,the soil anti-scourability were related significantly with other physiochemical index involving soil porosity,moisture content,water saturated conductivity,water stable aggregates content,soil silt content,organic content,soil bulk and soil anti-erodibility index.（3） Soil anti-scourability model under hedgerow systems were established,and the model indicated that the soil anti-erodibility index highly significantly related with soil other physicochemical index involved in the paper.
出处
《生态环境学报》
CSCD
北大核心
2012年第7期1223-1228,共6页
Ecology and Environmental Sciences
基金
国家科技支撑计划重点项目(2008BAD98B01-03)
西南林业大学生态学校级重点学科项目(XKX200902)
关键词
植物篱
土壤抗蚀性
土壤抗冲性
土壤抗冲模型
hedgerow system
soil anti-erodibility
soil anti-scourability
soil anti-scourability model
