Effect of Agricultural Land Use Changes on Soil Nutrient Use Efficiency in an Agricultural Area,Beijing,China

查看全文 作　　者：CHEN [1]Liding;QI [1]Xin;ZHANG [1,2]Xinyu;LI [1,3]Qi;ZHANG [1]Yanyan

机构地区：[1]State Key Laboratory of Urban and Regional Ecology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China;[2]Institute of Geographical Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 101101,China;[3]Department of Environmental Science and Engineering,Nanjing University of Information Science and Technology,Nanjing 210044,China

出　　处：《Chinese Geographical Science》索引2011年第21卷第4期,共11页

基　　金：Under the auspices of Key Direction in Knowledge Innovation Programs of Chinese Academy of Sciences (No. KZCX2-YW-421);National Natural Science Foundation of China (No.40925003) 摘　　要：Agricultural land use and management practices may affect soil properties,which play a critical role in sustaining crop production.Since the late 1970s,several new agricultural land use types had been introduced in the rural areas of China.The purpose of this study is to evaluate the effect of these land use changes on the soil properties,nu-trient absorption rate,and nutrient use economic efficiency ratio in an agricultural area of Beijing.Specifically,the cropland,the orchard and the vegetable field were examined.Results of this study suggest that land use and farming management practices significantly affect the content of soil organic carbon (SOC),total nitrogen (TN),total phos-phorus (TP),and available phosphorus in the surface layer of 0-25 cm (p<0.05) in the Yanqing Basin,northwestern Beijing.Soil nutrients in each agricultural land use type decrease rapidly with the increasing soil depth.Orchard and vegetable field tend to have higher soil nutrients than the cropland does.However,the soil nutrient-absorption rate (NAR) of the orchard and vegetable field is lower than that of the cropland,even though orchard and vegetable field may provide much higher economic benefit.While increasing SOC,TN,and TP in the orchard and vegetable field by intensive farming may be a valuable option to improve soil quality,potential increase in the risk of nutrient loss,or agricultural non-point source pollution can be a tradeoff if the intensive practices are not managed appropriately. 关键词：养分利用效率土壤性质北京中国农业土地利用土地利用类型农业非点源污染农地

相关文献

参考文献（58）
引证文献（5）
耦合文献（430）

参考文献(58)

引证文献(5)

耦合文献(430)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Effect of Agricultural Land Use Changes on Soil Nutrient Use Efficiency in an Agricultural Area,Beijing,China

参考文献(58)

引证文献(5)

耦合文献(430)

用户提示