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以油松、华北落叶松人工林为主要对象,研究了抚育间伐对林地土壤理化性质及微生物的影响,结果显示:1)抚育后土壤含水量增加。增加效果最显著的是采伐强度为30%的样地。抚育后土壤最大持水量、最小持水量及毛管持水量都明显增加;2)抚育间伐能够促进有全N含量的增加,全N含量由大到小依次为:抚育强度30%的样地>20%样地>10%样地;全P、全K变化差异较小,抚育后效果不明显;抚育对土壤的pH值影响不大,抚育能增加有机质含量;3)抚育后油松、落叶松样地无论是好气性细菌数量还是厌气性细菌数量都比对照样地有所增加。油松抚育间伐样地从细菌总数来看超出对照样地的78%。落叶松总细菌数高出对照4号样地37.9%,抚育对细菌的增加有明显地促进作用。
Taking Pinus tabulaeformis and Larix principis-rupprechtii as the main object, the effects of tending on the physical and chemical properties and microorganisms of forest land were studied. The results showed that: 1) Soil moisture content increased after tending. The most significant increase is the harvesting intensity of 30% of the plots. After tending, the maximum soil water holding capacity, the minimum water holding capacity and the capillary water holding capacity increased significantly. 2) Tending thinning could promote the increase of total N content. The order of total N content was as follows: the area with tending strength of 30%> 20 % Of plots> 10% of plots; the differences of total P and total K were small, and the effect after tending was insignificant; tending had little effect on the pH value of soil, and tending increased the content of organic matter; 3) No matter the number of aerobic bacteria or anaerobic bacteria than the control plots have increased. Pinus tabulaeformis thinning plot from the total number of bacteria in the control point of view of more than 78%. The total number of larch bacteria was 37.9% higher than that of the control 4, and tending had a significant effect on the increase of bacteria.