以下为句子列表：
英文: Abstract: Through a study on soil aggregate composition, nutrient status and enzymatic activity under mixed forest of Chinese fir Alniphyllum fortunei and pure stand of Chinese fir, the results indicated that, compared to pure stand, the soil structural p
中文: 文摘:通过对杉木拟赤杨混交林及杉木纯林土壤团聚体结构、土壤养分状况及酶活性的研究表明，与杉木纯林相比，混交林土壤结构性能得到改善，供肥和保肥能力加强，各种土壤酶活性提高，土壤肥力较好。
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英文: In natural mixed forest of Cunninghamia lanceolata, 44 species including 38 species and other 6 economic plants were selected to analyze their economic, ecological, social benefit and feasibility and to discuss multi-story mixed forestry of Cunninghamia l
中文: 摘要通过对天然杉木混交林的调查，从中筛选出38个树种，同时收集6种经济植物，共44种，就其经济效益、生态效益、社会效益及可行性进行分析，探讨了不同决策目标的杉木立体混交经营模式。
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英文: The fractal dimension of the mixed forests were lower than the pure forests and grassland, and the soil weight diameter of the mixed forests were higher than the pure forests and grassland, which indicated that the mixed forest had best soil structure pro
中文: 混交林分分形维数均低于单纯林与荒草地，土壤重量平均直径均高于单纯林与荒草坡，说明混交林土壤结构稳定性最好，土壤通透性较好，具有较高的水土保持功能；③不同林分类型之间，土壤总孔隙度与非毛管孔隙度差异较大，而毛管孔隙度的差别较小。
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英文: The results showed that forest vegetation could effectively conserve water and soil and improve entironment, while the effects of water and soil conservation were significant varied between different vegetations, the effect of mixed forest was significant
中文: 结果表明，森林植被能有效地保持水土，改善生态环境，但不同植被下保持水土的效果有明显差异，尤以混交林保持水土效果显著。
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英文: Today, the forest has been fairly well reestablished, tending to a mixed forest of evergreen broad-leaf and deciduous broad-leaf trees in succession.
中文: 该群落的物种多样性在同地区的次生林类型中处于较高水平，表明群落以前受到过中度干扰，目前的恢复状况较好，群落的演替趋势是常绿阔叶落叶阔叶混交林。
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