文献类型：期刊文献

中文题名：北亚热带天然次生林封山育林对土壤肥力质量的影响

英文题名：Effects of Hill Closing for Forestation on Soil Fertility Quality in North Subtropical Areas

作者：马少杰[1] 李正才[1] 周本智[1] 格日乐图[1] 孔维健[1] 安艳飞[1]

第一作者：马少杰

机构：[1]中国林业科学研究院亚热带林业研究所

年份：2011

卷号：33

期号：2

起止页码：328-334

中文期刊名：江西农业大学学报

外文期刊名：Acta Agriculturae Universitatis Jiangxiensis

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD_E2011_2012】；

基金：中央级公益性科研院所基金资助项目(RISF060701);中国林业科学研究院院长基金项目(CAFYBB2008006)

语种：中文

中文关键词：北亚热带;天然次生林;封山育林;土壤肥力

外文关键词：North Subtropical China; secondary forest; hill closing for forestation; soil fertility

分类号：S714.8;S158.1

摘要：以北亚热带受损天然次生林为研究对象,探讨了封山育林对土壤肥力质量的影响。研究结果表明:(1)从植被恢复的时间对土壤养分变化的影响来看,有机质、全氮、水解氮的平均值增幅分别为56.14%,79.41%,91.07%,差异达到显著水平;速效磷,速效钾,速效Ca和速效Mg平均值增幅分别为20.00%,31.80%,20.79%,2.65%,差异未达到显著水平。而各土壤养分元素,在其土壤剖面上,增加幅度又有不同程度的差异。(2)不同封山育林年限下,各养分元素在其剖面层次上的分布趋势基本一致:随深度增加,其含量减少。(3)土壤养分变化具有明显的表聚性。对0～20 cm土层土壤养分的线性相关分析表明,土壤有机质、全氮、水解氮、速效钾、速效Ca与速效Mg两两之间线性显著或极显著相关,而速效磷与除速效钾以外的其他土壤养分(速效磷与速效钾显著相关,r=0.71)相关性不显著。(4)土壤肥力因子主成分分析结果表明,封育40年的植物群落土壤肥力高于20年的群落。可见,北亚热带天然次生林封育有助于改善土壤肥力状况;而土壤质量的改善,又为天然次生林的进展演替奠定了基础。
This paper deals with the effects of hill closing for forestation on soil fertility quality in north subtropical areas.The results show that：（1） Vegetation restoration had a significant effect on soil nutrient dynamics.In general,soil nutrient contents increased as progressive succession proceeded,and significant changes occurred in soil organic matter（SOM）,total N,hydrolysis N,and the average values of those indexes increased by 56.14%,79.41%,91.07% respectively;while no significant change in available P,available K,available Ca and available Mg,the average values of those indexes increased by 20.00%,31.80%,20.79%,2.65% respectively.However,on the soil profiles,the increasing degrees of soil element-couples varied at different levels.（2） In different hill closing years,the changing tends of soil element-couples were nearly the same： on the whole,it decreased with increasing of soil depths.（3）Soil nutrients tended to accumulate in the surface layer.Statistical analysis in the surface layer（0-20 cm） showed that SOM,total N,hydrolysis N,available K,available Ca and available Mg were extremely significantly or significantly correlated with each other,but didn＇t show correlation with available P and other soil nutrients（excluding available K,available P and available K,Which were significantly correlated,r=0.71）.（4） The result of principal component analysis indicated that soil fertility of 40 years community is higher than that of 20 years community.The results suggested that hill closing for forestation could help improve soil fertility;on the other hand,the improvement of soil fertility could also provide better prerequisite for secondary forest.