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人工杉木林地有机物和养分库的退化与调控
引用本文:吴蔚东,张桃林,孙波,赵其国.人工杉木林地有机物和养分库的退化与调控[J].土壤学报,2000,37(1):41-49.
作者姓名:吴蔚东  张桃林  孙波  赵其国
作者单位:1. 江西农业大学资源与环境学院,南昌,330045
2. 中国科学院南京土壤研究所,南京,210008
基金项目:国家自然科学基金资助项目(39260059)和国家自然科学重点基金资助项目(49631010)部分研究内容
摘    要:研究表明,人工杉木林地土壤有机物和养分库严重退化,地表枯枝落叶层中干和各种养分的贮量与阔叶林和混交林比较明显下降,土壤中有机质,全N量和碱解N含量的剖面分布也表现出相同的趋势。传统的炼山造林使杉木林地枯枝落叶和养分库是呈突变形式 经,林份组成单一,凋落物数量和养分含和也是杉木林土壤有机物和归库退化的重要因素。通过改进林木更新方式和改善林份组成很大程度上控制人工林有机物和养分库的退化。

关 键 词:人工杉木林  土壤  有机物  养分库  退化
收稿时间:9/3/1998 12:00:00 AM
修稿时间:1998-09-03

DEGRADATION AND CONTROL OF SOIL ORGANIC MATTER AND NUTRIENT POOL UNDER ARTIFICIAL CHINESE FIR FOREST
Wu Wei-dong,Zhang Tao-lin,Sun Bo and Zhao Qi-guo.DEGRADATION AND CONTROL OF SOIL ORGANIC MATTER AND NUTRIENT POOL UNDER ARTIFICIAL CHINESE FIR FOREST[J].Acta Pedologica Sinica,2000,37(1):41-49.
Authors:Wu Wei-dong  Zhang Tao-lin  Sun Bo and Zhao Qi-guo
Institution:Institute of Resources and Environmental Science, Jiangxi Agricultural University, Nanchang 330045;Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008;Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008;Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008
Abstract:This paper reported severe degradation of soil organic matter and nutrient pool under CF (artificial Chinese fir forest). Remarkable drop of litter matter and its nutrients under CF were observed compared with those under BF (natural broadleaped forest) and MF (artificial mixed forest of Chinese fir and broad-leaved forest).And similar drop trends of soil OM content and total N and hydrolyzed N in soil profile distribution were also found. The degradations of litter layer and nutrient pool under CF were abruptly as the conventional reforestation was implemented. In addition,an unitary composition of standing forest with less litter and nutrients returned to soil is another factor inducing the degradation of organic nutrient pool. It is suggested that the degradation of soil organic matter and nutrient pool could be control by improving forest regeneration technique and forest component.
Keywords:Artificial Chinese fir forest  Soil organic matter and nutrient pool  Degradation and control
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