| 荒漠草原区不同类型草地土壤水分特征研究 |
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| 引用本文： | 何秀珍,宋乃平,刘孝勇,李勇.荒漠草原区不同类型草地土壤水分特征研究[J].干旱区资源与环境,2012(4):117-122. |
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| 作者姓名： | 何秀珍 宋乃平 刘孝勇 李勇 |
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| 作者单位： | 宁夏大学西北退化生态系统恢复与重建教育部重点实验室;宁夏大学资源环境学院 |
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| 基金项目： | 973计划前期研究专项(编号:2009CB426304);国家自然科学基金项目(批准号:30960075)资助 |
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| 摘 要： | 农牧交错带发展人工草地的关键是土壤水分的适应性,针对年平均降水量250mm的地区,以人工甘草草地、人工苜蓿地、人工苜蓿混播甘草地和天然草地为对象,通过2010年观测,计算各种草地0-100cm土层质量含水量的均值、变异系数,分析土壤水分的空间分布特征;利用土壤水分平衡和土壤分层储水量公式计算不同草地0-100cm土层总储水量,结合试验地生长季降水量变化,分析不同草地储水量与消耗量以及0-20、20-60、60-100cm土层水分均值随植被生长季的变化规律。
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| 关 键 词： | 土壤水分 草地类型 变异系数 储水量 |
Soil moisture properties in different types of grasslands in arid zone |
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| HE Xiuzhen,SONG Naiping,LIU Xiaoyong,LI Yong.Soil moisture properties in different types of grasslands in arid zone[J].Journal of Arid Land Resources and Environment,2012(4):117-122. |
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| Authors: | HE Xiuzhen SONG Naiping LIU Xiaoyong LI Yong |
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| Institution: | 1(1.Research Center for Exploitation of Ecology and Biology Resources in Western China of Ministry of Education,Ningxia University,Yinchuan 750021,P.R.China;2.School of Resources and Environment,Ningxia University,Yinchuan 750021,P.R.China) |
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| Abstract: | The adaptibility to soil moisture is very important to developping the cultivated pasture in farmland-pastroral ecotones.Under the condition of 250mm average precipitation,with the cultivated Licorice grassland,cultivated alfalfa grassland,cultivated alfalfa with licorice grassland and the natural grassland as research objects,the average and coefficient of variation of the soil moisture ranging from 0cm to 100cm of different grasslands were analyzed using the observation data of 2010 in order to illustrate the spatial characristics of soil moisture.The formula for soil moisture balance and moisture storage in different depth of soil was used to calculate the total soil moisture storage ranging from 0cm to 100cm of different grasslands,then the changes of precipitation in test plots were combined to analyze the soil moisture storage and moisture wastage of different grasslands and the change of 0-20,20-60,60-100cm soil moisture with different grassland in growing season. |
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| Keywords: | soil moisture grassland types coefficient of variation |
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