间伐对马尾松人工林土壤酶活性的影响  

Effects of thinning on the soil enzyme activity in the Pinus massoniana Lamb.plantation

作　　者：郝俊鹏[1] 凌宁[1] 李瑞霞[1] 王东[1] 闵建刚[1] 彭婷婷[1] 刘娜[1] 关庆伟[1] 

机构地区：[1]南京林业大学森林资源与环境学院,江苏南京210037

出　　处：《南京林业大学学报（自然科学版）》2013年第4期51-56,共6页Journal of Nanjing Forestry University：Natural Sciences Edition

基　　金：国家林业公益性行业科研专项项目(201104075);国家重点基础研究发展计划(2012CB416904)

摘　　要：以南京溧水林场25年生马尾松(Pinus massoniana)林为对象,对6年前实施了弱度(25%)、中度(45%)、强度(65%)间伐的各处理样地土壤酶活性进行了调查。结果表明:间伐对土壤酶活性有一定的提升作用,但不同间伐强度对土壤酶的提升效果不同。弱度间伐在10月和12月对土壤蔗糖酶活性提升效果最明显,在12月对碱性磷酸酶活性提升效果最明显,其余以中度间伐的提升效果较为明显。对25年生马尾松人工林而言,中度间伐可提高林地土壤酶活性,促进马尾松对林地养分的利用。The soil enzyme activities were studied in 25 years old Pinus massoniana plantation at Lishui Forest Farm in Nanjing which were imposed light （25%）, moderate （45%） and strong （65%） intensity thinning treatments six years ago. The result showed that thinning had an ascending function on soil enzyme activities, but the effects varied under different thinning intensity. Light thinning intensity enhanced invertase and hydrogen peroxide activities mostly in Octo- ber and December, and increased alkaline phosphatase activity mostly in December. The effects of moderate intensity were more obvious in the other period. As to 25-year-old P. massoniana plantation, soil enzyme activity could be im- proved with middle intensive thining, therefore, utilization of soil nutrient in P. massoniana plantation could be in- creased.

关 键 词：马尾松人工林 间伐 土壤酶活性 

分 类 号：S714[农业科学—林学]