华家岭防护林带土壤理化特性研究  

Soil physicochemical properties of shelterbelts in Huajialing

作　　者：赵赫然[1] 王辉[1] 黄蓉[1] 

机构地区：[1]甘肃农业大学林学院,兰州730070

出　　处：《干旱区资源与环境》2014年第11期139-144,共6页Journal of Arid Land Resources and Environment

基　　金：甘肃省高等学校研究生导师科研项目(1202-01)资助

摘　　要：采用实地调查取样与室内常规分析相结合的研究方法,对华家岭防护林带的土壤理化性质进行了测定和分析。结果表明:林分类型和林龄会影响土壤理化性质,表现为:云杉纯林土壤物理性质明显优于油松、杨树纯林;各林分土壤速效N、K,全量N、P、K及土壤有机质平均含量均为云杉纯林﹥杨树纯林﹥油松纯林,土壤速效P平均含量为云杉纯林﹥油松纯林﹥杨树纯林;随林龄的增加,云杉林的平均毛管孔隙度有所改善,土壤的通气性和透水性逐步提高,涵养水源能力有所增强。除速效P、全量K外,云杉林的各项土壤化学指标随林龄的增加均有不同程度的提高。In order to discuss the variation characteristics of soil physicochemical properties on different forest types and different forest ages in Huajialing,the soil physicochemical properties were measured and analyzed by the research method of field survey sampling and indoor routine analysis. The results showed： The soil physical properties of P. asperata pure forest was significantly better than P. tabuliformis pure forest and P. hopeiensis pure forest during the different forest types in Huajialing. The order of average content of soil available N,K,total N,P,K and soil organic matter of different forests were P. asperata pure forest ﹥ P. hopeiensis pure forest ﹥ P.tabuliformis pure forest,and average content of available P was P. asperata pure forest ﹥ P. tabuliformis pure forest ﹥ P. hopeiensis pure forest. With the forest age increased,the average capillary porosity of P. asperata forest was improved,aeration and water permeability of soil also was increased gradually,and water conservation capacity was enhanced. In addition to available P and total K,soil chemical indicators of P. asperata forest was increased with forest age increased in varying degrees.

关 键 词：防护林 土壤理化性质 华家岭 

分 类 号：S714.2[农业科学—林学]