不同间伐抚育强度对华北落叶松人工林土壤物理性质变化影响的研究

不同间伐抚育强度对华北落叶松人工林土壤物理性质变化影响
的研究
王利东
【期刊名称】《河北林果研究》
【年(卷),期】2012(027)001
【摘要】以华北落叶松人工林为研究对象,主要研究分析了不同间伐抚育强度下华北落叶松人工林林下土壤层的物理性质变化情况.选取指标主要包括土壤容重、土壤饱和含水量、土壤田间持水量以及土壤总孔隙度.研究结果表明:随着间伐强度的加大,林下土壤容重持续下降,其中0～10 cm处的土壤容重相比未伐林分分别下降3.2％、5.2％、5.7％ ;10～20 cm处分别下降1.6％、1.6％、3.9％；土壤饱和含水量、土壤田间持水量、土壤总孔隙度等指标也随间伐强度的增大而增加.对研究结果采用方差分析的方法进行显著性检验,结果表明:不同强度的间伐抚育对落叶松林土壤层的饱和含水量、田间持水量变化影响显著,对土壤容重和土壤总孔隙度的变化影响不显著.%The article mainly researches and analyzes the changing status of soil layer physical properties of Larix principis-rup prechtii Mayr plantation under different thinning intensity based on selected indicators including soil bulk, soil saturated water content, soil field capacity and soil total porosity. Research results indicate that as the thinning intensity increased, the understory soil capacity heavy fell constantly, with the soil capacity heavy at 0～10 cm layer decreased by 3. 2%, 5. 2% and 5. 7% compared to that of stand without thinningnot thinned while that at 10～20 cm layer fell 1.6%, 1. 6% and 3. 9% respectively. However, such
indicators as soil saturated moisture, soil field holding water, and soil total porosity increase with the increase in thinning intensity. Significance test with variance analysis reveals that the tending under different thinning intensity significantly affectes the soil saturated water content and field capacity, but it has no obvious influence on the soil bulk density and soil total porosity.
【总页数】4页(P6-9)
【作者】王利东
【作者单位】河北省塞罕坝机械林场,河北围场068466
【正文语种】中文
【中图分类】S753.7
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