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分析了不同间伐强度对天然次生林凋落物的性质的影响。经过分析,不同间伐强度下年凋落量最大的为弱度间伐区。枯枝落叶贮量以弱度间伐区为最大,强度间伐区最小。凋落物分解转化率以强度间伐区最高,对照区最小。从养分归还看,强度间伐区全氮、全磷、全钾的归还量均最大。认为中度间伐下枯枝落叶性质最有利于天然次生林的可持续利用。
The effects of different thinning intensities on the litter properties of natural secondary forests were analyzed. After analysis, the thinning intensity of the next year the largest amount of annual litter thinning area. Litter reserve was the largest in thinning area and the lowest in intensity thinning area. The rate of litter decomposition and conversion was highest in intensity thinning area and smallest in control area. From the return of nutrients to see, the intensity of thinning area total nitrogen, total phosphorus, total potassium return are the largest. It is concluded that the litterfall under the middle-thinning is most conducive to the sustainable use of natural secondary forest.