三峡库区典型林分林地土壤抗蚀抗冲性研究  

Research on Forest Soil Anti-erosion and Anti-scour of Typical Forests in Three Gorges Reservoir Areas

作　　者：周利军[1] 齐实[1] 王云琦[1] 

机构地区：[1]北京林业大学水土保持学院,北京100083

出　　处：《水土保持研究》2006年第1期186-188,216,共4页Research of Soil and Water Conservation

基　　金：国家"十五"攻关课题"退耕还林工程区水源涵养型植被建设技术研究与示范(2001BA510B02-01)

摘　　要：通过对三峡库区重庆缙云山四种典型林分（针阔叶混交林，阔叶林，楠竹林和灌木林）林地土壤的抗蚀抗冲特征研究表明，林地土壤抗蚀指数为农地土壤的1．3～1．9倍。各林分林地土壤抗蚀指数的顺序为灌木林最大（78．4），阔叶林最小（53．3）。抗蚀指数随着土层的增加而减弱。林地土壤抗蚀指数与其相关因子毛管孔隙度，稳渗率，非毛管孔隙度，〈1mm根长关系最密切。除楠竹林外，各林分林地土壤抗冲系数大于农地（1．2～1．9倍）。林地土壤抗冲性的强弱是其相关因子综合作用的结果。The research on the forest anti-erosion and anti-scour characteristics of 4 typical forests （mixed wood, broadleaf forest ,bamboo forest and shrub forest ）in Jinyun mountain in Chongqing City in Three Gorges Reservoir areas shows that ,the forest soil antl-eroslon indexes is 1.3- 1.9 times arable farmland, and the maximal is shrub forest （78.4）, the minimal is broadleaf forest （53.3）. The antl-eroslon index is lessening with the soil layer deepening. The anti-erosion indexes have close relations with soil capillary porosity,non-solid permeability,capillary porosity,length of 〈1 mm root. Except bamboo forest soil,other forest soil anti-scour coefficients are more than one of arable land （be 1.2-1.9 times）,the anti-scour capacity is the result of mutual function of related factors.

关 键 词：缙云山 林地土壤 抗蚀指数 抗冲系数 

分 类 号：S714.7[农业科学—林学]