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沙地土壤pH值、养分含量对微地形变化的响应
引用本文:高凯,张丽娟,于永奇,韩国栋. 沙地土壤pH值、养分含量对微地形变化的响应[J]. 水土保持通报, 2016, 36(1): 88-92. DOI: 10.13961/j.cnki.stbctb.2016.01.016
作者姓名:高凯  张丽娟  于永奇  韩国栋
作者单位:1. 内蒙古民族大学农学院,内蒙古通辽,028043;2. 内蒙古民族大学农学院,内蒙古通辽028043;内蒙古农业大学生态环境学院,内蒙古呼和浩特010018
基金项目:内蒙古自然科学基金项目"生物和环境因子对植被生态恢复的影响及其互作机理"(2013MS0525); 内蒙古自治区重大科技项目(20101405)
摘    要:[目的]针对浑善达克沙地土壤pH值、碳、氮、磷含量的微地形变异性进行研究,系统分析浑善达克沙地不同微地形条件下土壤营养物质含量的的变化规律,为浑善达克沙地环境建设和合理开发利用提供理论参考。[方法]以内蒙古锡林郭勒盟白音锡勒牧场境内的中国科学院内蒙古草原生态系统定位站长期围封的沙地样地为研究对象,测定坡位对土壤pH值、碳、氮、磷含量。[结果]不同坡位pH值平均值大小顺序为:阳坡坡底阴坡坡顶;有机碳含量平均值大小顺序为:坡底阴坡阳坡坡顶;全磷含量平均值大小顺序为:坡底阴坡坡顶阳坡;土壤含氮量阴坡和坡底显著高于坡顶和阳坡。[结论]不同微地形条件下各层土壤pH值、全碳和全磷含量的变异系数均表现为阳坡和坡顶高于阴坡和坡底;同一坡位不同土层营养物质含量变异系数大小关系没有规律可循,因坡位和土层不同而表现出不同的大小关系。

关 键 词:微地形  土壤养分  变异系数  沙地
收稿时间:2015-03-27
修稿时间:2015-05-11

Effects of Micro-topography on Soil pH Value, Nutrient Content in Sandy Land
GAO Kai,ZHANG Lijuan,YU Yongqi and HAN Guodong. Effects of Micro-topography on Soil pH Value, Nutrient Content in Sandy Land[J]. Bulletin of Soil and Water Conservation, 2016, 36(1): 88-92. DOI: 10.13961/j.cnki.stbctb.2016.01.016
Authors:GAO Kai  ZHANG Lijuan  YU Yongqi  HAN Guodong
Affiliation:College of Agriculture, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia 028043, China;College of Agriculture, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia 028043, China;College of Agriculture, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia 028043, China;College of Agriculture, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia 028043, China;College of Ecology and Environmental Science, Inner Mongolia Agricultural University, Huhhot, Inner Mongolia 010018, China
Abstract:[Objective] We aimed to study the effects of slope on soil pH value, carbon, nitrogen, phosphorus content in sandy land in order to reveal the variation of soil nutrients under different micro-topographical conditions, and provide a theoretical reference for environmental construction in sandy land. [Methods] The plots were selected from sandy land in Inner Mongolia grassland ecosystem research station(IMGERS). The effects of micro-topographical position on pH value, carbon, nitrogen and phosphorus content of soil were investigated. [Results] The pH values in different micro-topographical position showed as: sunny slope > slope base > shady slope > top of slope; The organic carbon content average showed as: slope base > shady slope > sunny slope > top of slope; The content of phosphorus showed as: slope base > shady slope > top of slope > sunny slope. Nitrogen content at the slope base and shady slope was higher than that at the top and sunny slope. [Conclusion] The variable coefficient of pH value, nitrogen, phosphorus content at top and sunny slope was higher than that at the base and shady slope. The variable coefficient of soil nutrient varied significantly among different micro-topographical positions.
Keywords:micro-topography  soil nutrient  coefficient of variation  sandy land
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