论文部分内容阅读
本文以云南哀牢山国家级自然保护区中山湿性常绿阔叶林的主要森林类型——木果石栎林为研究对象，分析了大气降雨对该生态系统的养分循环。结果表明，以大气降雨、穿透雨和树木干流为养分输入，以地表迳流和土壤渗漏为养分输出的养分循环过程中，Ｎ、Ｐ、Ｋ、Ｃａ等分别增加了１５．９４１ｋｇ／ｈｍ~２·ａ，０．３５３ｋｇ／ｈｍ~２·ａ，３．８３ｋｇ／ｈｍ２·ａ和１．２０１ｋｇ／ｈｍ~２·ａ，而Ｍｇ减少了０．６５４ｋｇ／ｈｍ~２·ａ。
In this paper, the main forest type of the evergreen broad-leaved evergreen forests in the Ailao Mountain National Nature Reserve in Yunnan Province - mulberry Quercus mongolica forest as the research object, analyzed the nutrient cycle of the rainfall on the ecosystem. The results showed that N, P, K and Ca increased by 15.941 kg / hm in the course of nutrient cycling with rainfall, penetration and trunk flow as nutrient inputs, surface runoff and soil seepage as nutrients, respectively ~ 2 · a, 0.353kg / hm ~ 2 · a, 3.83kg / hm2 · a and 1.201kg / hm ~ 2 · a respectively, while Mg decreased by 0.654kg / hm ~ 2 · a.