樟子松人工林土壤养分、微生物及酶活性的研究  

Soil Nutrient, Microorganism and Enzyme Activity in Pinus sylvestrisPlantations

作　　者：杨涛[1] 徐慧[1] 李慧[1] 方德华[2] 朱教君[3] 

机构地区：[1]中国科学院沈阳应用生态所陆地生态过程重点实验室,辽宁沈阳110016 [2]西南农业大学,重庆400716 [3]中国科学院沈阳应用生态所,辽宁沈阳110016

出　　处：《水土保持学报》2005年第3期50-53,共4页Journal of Soil and Water Conservation

基　　金：中国科学院知识创新工程重要方向资助项目(KZCX3-SW-418);辽宁省自然科学基金资助项目(2002110016)

摘　　要：对章古台不同林龄樟子松人工林土壤养分、微生物及酶活性进行了测定和分析,结果表明:各林地的土壤养分、微生物和酶活性均表现出差异。与健康林相比,出现生长衰退林地土壤样品的养分指标、微生物和酶活性均有显著程度的降低,表明土壤地力已出现严重衰退。土壤微生物数量、酶活性与土壤养分间呈显著相关关系,可作为评价土壤肥力的指标。解决当前人工林退化的主要措施是因地制宜进行间伐或轮伐,改善林地微生态条件,尽量避免营造人工纯林,建议营造混交林。The soil nutrient, microorganism and enzyme activity are studied and analyzed in Pinus sylvestris var.mongolica plantations in Zhanggutai area. The results are as follows:the differences of microorganism quantity among different type of soil is the significant, so are the enzyme activity and soil nutrient. The correlation among soil microorganism quantity, enzyme activity and soil nutrient content is the significant,it can be used as evaluation index of soil fertility. The strategy and measures to prevent the soil degradation of Pinus sylvestris var.mongolica were put forward,including application of thinning rationally for existing dense plantations and establishment of mixture forest for new plantations.

关 键 词：樟子松 土壤养分 微生物 酶活性 

分 类 号：S158.3[农业科学—土壤学] S154.2[农业科学—农业基础科学]