中国生态农业学报2011，Vol.19Issue(2)：363-371,9.DOI:10.3724/SP.J.1011.2011.00363
植被恢复过程中土壤有机质和全氮的变化特征及区域差异
Change characteristics and regional differences in organic matter and total nitrogen contents in topsoil under restored vegetation
摘要
Abstract
There exist significant differences in the impacts of vegetation restoration on soil chemical properties in different regions.In this paper, the previous data on organic matter and total N in the 0～20 cm topsoil in typical revegetated areas of Changting and Minqing Counties of Fujian Province, and Shaanbei region of Shaanxi Province were analyzed.The change characteristics of soil organic matter and total N under natural vegetation recovery were compared with those under artificial vegetation restoration.The results showed that compared with natural recovery in Changting and Minqing Counties of Fujian Province, the influence of artificial restoration on soil organic matter and total N was greater at the initial period, but was contrary at the later period.At the initial period of restoration in Shaanbei region, natural recovery gave more favorable effects on soil organic matter and total N contents than artificial restoration.However, the differences between natural recovery and artificial rehabilitation became less apparent in the latter periods of restoration.Cumulative and annual average increments in organic matter and total N under natural recovery were greater in Changting and Minqing Counties than in Shaanbei region.It was therefore recommended that artificial restoration be first implemented, followed by natural recovery in Changting and Minqing Counties of Fujian Province.In Shaanbei region, natural recovery should first be implemented, followed by integrated artificial and natural restoration.The above techniques could effectively improve soil organic matter and total N contents, which would in turn accelerate vegetation restoration in both provinces.关键词
植被恢复/土壤有机质/土壤全氮/区域差异Key words
Vegetation restoration/ Soil organic matter/ Soil total nitrogen/ Regional difference分类
农业科技引用本文复制引用
聂斌斌,蔡强国,张卓文,李国强,张文君..植被恢复过程中土壤有机质和全氮的变化特征及区域差异[J].中国生态农业学报,2011,19(2):363-371,9.基金项目
国家重点基础研究发展计划(973计划)项(2007CB407207)资助 （973计划）
