摘要
作者在云南哀牢山生态站对中山湿性常绿阔叶林进行了定位研究，根据１９９０～１９９２年所取得的观测资料，对林外大气降雨，林内雨及树干茎流的养分浓度，养分季节变化及养分贡献进行了分析和讨论，探讨了大气降雨对养分淋溶的影响。结果表明：Ｎ、Ｐ、Ｋ、Ｃａ、Ｍｇ浓度在林外降雨、林内降雨及树干流中有很大的差异。其养分浓度和养分输入均为雨季＞干季，且养分浓度除林外降雨中Ｎ浓度外，均表现树干茎流＞林内雨＞林外降雨。此外，对降雨和淋溶作用对林地养分物质输入的贡献也进行了分析和讨论。
The effects of rainfall onthe nutrient leachingand the seasonal variations of nutrients in rainfall, throughfall and stemflow in the moist evergreen broadleaved forest at the Ailao Mountain in Yunnan Province were analyzed and discussed based on the data collected during 1990～1992. The results show that the concentrations of N, P, K, Ca and Mg were different among rainfall, throughfall and stemflow. The concentration and input of nutrients were higher in the rainy than in the dry season. The concentration of nutri ents in slemflow was higher than that in throughfall which in turn was higher that in rainfall.The contributions to the nutrient input of the stands of the rainfall and the leaching from the trees were also discussed.
出处
《植物生态学报》
CAS
CSCD
北大核心
1996年第3期279-284,共6页
Chinese Journal of Plant Ecology
基金
国家自然科学基金
云南省自然科学基金
关键词
常绿阔叶林
降雨
养分
淋溶
Evergreen broadleaved forest
Rainfall
Nutrients
Leaching
