摘要
采用标准地调查采样方法,研究抚育间伐对大兴安岭林区兴安落叶松天然林生长和土壤理化性质的影响。研究结果表明:间伐12a后,间伐林分和对照林分平均胸径和每公顷蓄积量分别为9.67 cm、133.311 7 m3和5.44 cm和65.422 7m3(P<0.05);二林分在土壤容重、pH值、水解性氮、有效磷、全氮、全磷、全钾和碳氮比(全碳/全氮)方面差异不显著(P>0.05),间伐林分土壤速效钾含量显著降低(P<0.05)。说明抚育间伐能有效促进兴安落叶松林木生长,同时间伐不会对土壤理化性质产生不良影响。
This paper studied the effects of thinning on growth and soil properties in natural Lar/x grnelinii forest in Great Xing＇an Mountains by plot investigating and sampling. The results showed that, 12 years after thinning, the average DBH of the stand and per hec- tare volume were 9. 67cm and 133. 3117m3 for the thinning forest, and 5.44 cm and 65. 4227m3 for the control forest （ P 〈 0. 05 ）. Soil bulk density, pH value, hydrolysable nitrogen, available phosphorus, total nitrogen, total phosphorus, total potassium, and C/N ratio （total carbon / total nitrogen） dropped indistinctively （ P 〉 0. 05 ）. Available potassium dropped significantly （ P 〈 0. 05 ）. It is concluded that, thinnin~ could effectivelv nromote the zrowth of natural La, ri~ srrnpllnll far^t ~nrl h~ n. h^rl ~ff^ot~ .n th~ ~n;1 oh ~.4o~;~
出处
《森林工程》
2013年第3期6-9,共4页
Forest Engineering
基金
国家科技支撑计划课题(2011BAD37B02)
