Soil Nutrient Distribution in Two Typical Paddy Terrace Wetlands Along an Elevation Gradient During the Fallow Period  

作　　者：WANG Qinggai BAI Junhong HUANG Laibin DENG Wei XIAO Rong ZHANG Kejiang 

机构地区：[1]Appraisal Center for Environment and Engineering, Ministry of Environmental Protection, Beijing 100012, China [2]State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China [3]Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China. [4]The Center of Environmental Engineering Research & Education, University of Calgary, 2500 University Drive NW, Calgary Alberta T2N IN4, Canada

出　　处：《Journal of Mountain Science》2011年第3期476-483,共8页山地科学学报（英文）

基　　金：supported by National Basic Research Program (Grant No.2010CB951102);National Natural Science Foundation of China (Grant No.50879005,40701003 and U0833002);Program for New Century Excellent Talents in University;Program for Changjiang Scholars and Innovative Research Team in University (Grant no.IRT0809);the Fundamental Research Funds for the Central Universities (Grant No.2009SD-24)

摘　　要：Soil nutrient concentrations in the top soils from two paddy terraces were determined in order to investigate spatial distributions of soil nutrients along the elevations on the Yunnan plateau of China during the fallow period.Results showed that soil nutrients in both terraces were higher than the reference concentrations except for SOC,TN,TP and Fe.Soil macronutrients didn't show significant differences in both terraces except for Mg and Ca,so did soil micronutrients except for Mn.Spatial distribution patterns of soil nutrients along the increasing elevations were different in both terraces.However,soil nutrients in both terraces were generally not significantly influenced by the elevations and soil pH values.The findings of this study can contribute to soil fertility management and ecological protection of Hani terraces.

关 键 词：Spatial distribution MACRONUTRIENTS MICRONUTRIENTS Hani terrace Elevations 

分 类 号：S158.3[农业科学—土壤学] Q948.15[农业科学—农业基础科学]