摘要
采用野外调查与室内分析相结合的方法,对黔东南常绿阔叶林、针阔混交林、针叶林3种林地类型不同土层（A：0~15cm,B：15~35cm）物理性质和养分含量进行对比研究。结果表明,随着土层深度增加,3种林地类型土壤物理性黏粒（〈0.01mm）含量逐渐增加,总体表现为针叶林和针阔混交林相近,均较大,常绿阔叶林较小;土壤容重逐渐增加,总体表现为针阔混交林最大,常绿阔叶林和针叶林相近,均较小;土壤总孔隙度逐渐减小,总体表现为针叶林〉常绿阔叶林〉针阔混交林;土壤毛管持水量逐渐减小,总体表现为常绿阔叶林〉针阔混交林〉针叶林。随着土层深度增加,3种林地类型土壤pH值逐渐增加,但均处于较强酸性水平,总体表现为常绿阔叶林〉针阔混交林〉针叶林;土壤有机质含量逐渐降低,总体表现为常绿阔叶林〉针叶林〉针阔混交林;3种林地类型土壤全氮、全磷含量及针叶林土壤全钾含量均随土层深度增加而减少,而常绿阔叶林、针阔混交林土壤全钾含量均随土层深度增加而增加,全氮、全磷、全钾含量总体上表现为常绿阔叶林〉针阔混交林〉针叶林;土壤碱解氮、有效磷、速效钾含量均逐渐降低,总体上分别表现为常绿阔叶林〉针阔混交林〉针叶林,常绿阔叶林〉针叶林、针阔混交林,针叶林〉常绿阔叶林〉针阔混交林。
The physical property and nutrient content from different soil layers（A：0-15 cm,B：15-35cm）in three types of forest land（evergreen broad-leaf forest,theropencedrymion and coniferous forest）were analyzed.The results showed that with the increase of soil depth,the content of soil physical clay（0.01mm）in three types of forest land increased,on the whole,the content of soil physical clay in the coniferous forest and theropencedrymion were similar,larger,but that in evergreen broad-leaved forest was smaller;volume weight of soil in three types of forest land increased,on the whole,volume weight of soil in theropencedrymion was larger,that in evergreen broad-leaf forest and coniferous forest was similar,smaller;soil total porosity decreased in three types of forest land,on the whole,the order was coniferous forestevergreen broad-leaf foresttheropencedrymion;soil capillary water decreased in three types of forest land,on the whole,the order was evergreen broad-leaf foresttheropencedrymionconiferous forest.With the increase of soil depth,soil pH value increased in three types of forest land,but the soil was still in strong acidic level,on the whole,the order was evergreen broad-leaf foresttheropencedrymionconiferous forest;the content of soil organic matter in three types of forest land gradually reduced,on the whole,the order was evergreen broad-leaf forestconiferous foresttheropencedrymion;the content of total nitrogen,total phosphorus in soil from three types of forest land and the content of soil total potassium in soil from coniferous forest decreased,while the content of total potassium in soil from evergreen broad-leaf forest,theropencedrymion increased,on the whole,the content order of total nitrogen,total phosphorus and total potassium was evergreen broad-leaf foresttheropencedrymionconiferous forest;the contents of alkali-hydrolyzale nitrogen,available phosphorus and rapidly available potassium in soil from three types of forest land decreased,on the whole,the orders were evergreen broad-leaf foresttheropencedrymionconiferous forest,evergreen broad-leaf forestconiferous forest and theropencedrymion,coniferous forestevergreen broad-leaf foresttheropencedrymion respectively.
出处
《河南农业科学》
CSCD
北大核心
2014年第8期49-53,共5页
Journal of Henan Agricultural Sciences
基金
贵州省科技厅计划项目(黔科合体R重字[2011]2003)
贵州科学院青年基金项目(黔科院J合字[2011]08号)
关键词
黔东南
林地类型
土壤物理性质
土壤养分
southeast Guizhou province
different types of forest land
soil physical property
soil nutrient
