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《Acta Prataculturae Sinica》 2010-03
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Spatial distribution of soil nutrients and soil microbes in five arbore-bushe-grass lands at the south-north hills in Lanzhou,China

ZHONG Fang1,ZHAO Jin2,SUN Rong-gao3,LI Zheng-ping1,WANG Wan-peng1 (1.Green Project Headquarter of South-north Hills Environments of Lanzhou,Lanzhou 730030,China;2.College of Resource & Environment,Gansu Agricultural University,Lanzhou 730070,China;3.Environmental Protection Research Institute of Lanzhou,Lanzhou 730030,China)  
The spatial distribution of soil nutrients and soil microbes in five arbores-bushes-grass lands at the south-north hills in Lanzhou was studied.The results showed that:1) the soil organic matter and total N content in the soil of Caragana korshinskii land were significantly larger than lands of Tamarix austromongolica,Lycium chinense,Reaumuria soongorica and Platycladus orientalis types (P0.05),the soil chemical property was improved.The ranking of the soil nutrient contents was C.korshinskii typeT.austromongolica typeL.chinense typeR.soongorica typeP.orientalis type.The amount of soil microbes was the most abundant at the C.korshinskii type land.2) The quantity of microbes and nutrient content clearly decreased with the soil depth in the different land because of soil fertility factor.The quantity of microbes in the 0-10 cm layer was 47.86% of total microbes.3) The interaction was existed among vegetation,soil nutrient and soil microbial quantity in some extend.
【Fund】: 兰州市科技攻关计划项目(2008-SY-12)资助
【CateGory Index】: S158;S154
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