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作 者 ：李飞 陈永瑞

期 刊 ：林业科学 1999年 35卷 3期 页码：16-21

关键词：小流域；马尾松阔叶林；矿质营养；循环；

Keywords:Small watersheds, Pinus massoninana Mixed forest, Mineral nutrient, Cycling,

摘 要 ：利用面积为21370m²的天然小流域,研究了人工马尾松阔叶混交林内K、P、Ca、Mg、Zn、Cu、Fe、Mn8种矿质元素1993～1995年间积累、留存、淋溶、归还、吸收等养分的迁移、循环过程。通过分析矿质元素伴随天然降雨的输入与地表径流的输出,得出该生态系统养分收支状况在总体上处于盈余状态;并且有较高的利用系数和循环系数等。

Abstract:In a small watershed with an area 21370m² covered，with the mixed forest of Pinus massoninana and broad-leaved trees，the cycling process of K、P、Ca、Mg、Zn、Cu、Fe and Mn，including their accumulation，retention，leaching，return，uptake and average budget has been studied from 1993 to 1995． The experimental results show that the total amount ofmineral elements in the rainfall input into the mixed forest ecosystem was more than the output from the system in the runoff from l993 to l995，and the stand was on positive succession with higher using and cycling efficiencies．

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