Artifical improvement of soil fertility in a regraded forest ecosystem by using municipal sewage sludge.

城市污泥对退化森林生态系统土壤的人工熟化研究。

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This could be confirmed by the organic matter and nitrogen circulation and the improvement of soil fertility.

这可以从有机物质、氮素的循环和土壤肥力因素的改善得到证明。

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It is concluded that the mixed stand can be able to be self-rich in soil fertility, which benefit the maintenance and improvement of site fertility under Chinese fir plantation.

表明杉木拟赤杨混交林具有良好的培肥土壤功能，对杉木人工林的地力维持和提高有重要意义。

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