摘要
由几个类型看台的比较，在表面土壤上植被和陆地使用完成在山西的 Wutal 山被调查省。那棵落叶松(Larix principis-rupprechtii ) 和桦树承受的结果表演(Betula platyphylla ) 比松(Pinus tabulaeformis ) 在表面土壤的性质上有更赞成的影响种植园和松和白杨(Populus cathayana ) 的混合种植园。因为脱落种类森林在崽有更年度的垃圾和更高滋养的内容，因此，更多营养素回到了土壤。因为白杨的垃圾在数量是更大的并且在 1 以内分解鈮 ? ，松和白杨种混合能大部分改进土壤富饶一。灌木陆地在叶子并且相对包含了高滋养的内容很少人的干预，许多营养素在一个长时期上在土壤积累，在松种植园土壤比那在灌木土地土壤导致更高滋养的内容。他们中的一些例如玫瑰(罗莎 bella ) ，乡线菊属植物(乡线菊属植物 trilobata ) ， ostryopsis (Ostryopsis davidiana ) 和 bushclover (Lespedeza 二色) 主导的看台，比的有甚至更高滋养的地位落叶松和桦树看台。陆地使用能显著地改变土壤富饶。在灌木看台作为农田是 cultivted 以后，土壤有机物和滋养的内容减少了，但是在后面的时期期间主要增加了到预先栽培的水平。落叶松是在在这个区域的造林活动的最佳种类，这被推荐。自然桦树看台应该被保护免受进一步的损坏的伤害。灌木土地的耕作应该被停止。发展和灌木资源的全面利用应该被其他的耕作的方法加强。
By comparison of several kinds stands, effect of vegetation and land use on the surface soil was investigated in Wutal Mountains of Shanxi Province. The result shows that larch (Larix principis-rupprechtii) and birch stands (Betula platyphylla) have more favourable influence on the properties of surface soil than pine (Pinus tabulaeformis) plantation and mixed plantation of pine and poplar (Populus cathayana). Since deciduous species forest had more annual litter and higher nutrient contents in the litter, thus much more nutrient returned to soil. Mixed planting of pine and poplar could largely improve the soil fertility because litter of poplar is greater in amount and decomposes within 1≈2a. The shrub lands contained high nutrient contents in leaves and relatively few human intervention, much of nutrient accumulates in the soil over a long period, resulting in higher nutrient contents in shrub land soil than that in pine plantation soil. Some of them, such as rose (Rosa bella), spiraea (Spiraea trilobata), ostryopsis (Ostryopsis davidiana) and bushclover (Lespedeza bicolor) dominant stands, have even higher nutrient status than larch and birch stands. Land-use could significantly change the soil fertility. Soil organic matter and nutrient contents decreased after shrub stand was cultivted as cropland, but increased largely to the pre-cultivated level during following period. It is recommended that larch is the optimum species in the afforestation activities in this area. Natural birch stand should be protected from further damage. Cultivation of shrub land should be stopped. The development and comprehensive utilization of shrub resources should be strengthened by the way of alternative cultivation.
