人工桤柏混交林中降雨对养分物质的淋溶影响  

The Effects of the Partioning of Rainfall on the Nutrients Leaching Processes in the Mixed Alnus Cremastogyne and Cupressus Funebris Forest.

作　　者：彭培好[1] 王金锡[1] 胡振宇[1] 高华东[1] 

机构地区：[1]四川省林业科学研究院,成都610081

出　　处：《生态学杂志》1996年第5期12-15,共4页Chinese Journal of Ecology

摘　　要：Water quality of rainfall changes greatly after passing throngh trees canopy in the watershed.In this paper,an artificial mixed forest was chosen to measure the precipitation inside and outside of the forest, and stemflow as well as the variations of their nutrient contents.By analysing the characteristics of rainfall partitioning ,the water qualilty,the nutrient input and cycling processes were discussed.The results showed that the concentrations of NH 4-N,NO 3-N,P,K,Ca and Mg were different among rainfall,throughfall and stemflow.In accordance with the rainfall partitioning,nutrients entered the field both as point source and area source,from which two different processes of translocation were found.The nutrient contributions in the field by rainfall and leaching from trees were also discussed.Water quality of rainfall changes greatly after passing throngh trees canopy in the watershed.In this paper,an artificial mixed forest was chosen to measure the precipitation inside and outside of the forest, and stemflow as well as the variations of their nutrient contents.By analysing the characteristics of rainfall partitioning ,the water qualilty,the nutrient input and cycling processes were discussed.The results showed that the concentrations of NH 4-N,NO 3-N,P,K,Ca and Mg were different among rainfall,throughfall and stemflow.In accordance with the rainfall partitioning,nutrients entered the field both as point source and area source,from which two different processes of translocation were found.The nutrient contributions in the field by rainfall and leaching from trees were also discussed.

关 键 词：桤 柏 混交林 降雨 养分淋溶 淋溶 人工林 

分 类 号：S714.7[农业科学—林学]