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中文摘要：
为探究草原不同放牧制度对土壤水文特性的影响,通过野外试验,分层测定0-80cm土层不同放牧草场的土壤水分特性参数。结果表明,呼伦贝尔草原休牧、轮牧及自由放牧草场植被各项生态指标差异显著,土壤质地主要为砂土和砂壤土;3种放牧草场土壤容重、有机质、孔隙度、持水量等指标随深度变化规律不明显,土壤有机质含量大小为休牧草场〉轮牧草场〉自由放牧草场,土壤总孔隙度顺序为休牧草场〉自由放牧草场〉轮牧草场。根据土壤持水性能分析,休牧草场供水性能较好,对植被生长最为有利,轮牧次之,自由放牧草场最差,同时休牧草场及轮牧草场对水分涵养、保持水土等方面的能力高于自由放牧,建议将部分自由放牧草原转变为休牧草场及轮牧草场。
英文摘要：
In order to explore the soil hydrological characteristics in different grazing system grassland,the soil moisture characteristics of 0-80 cm soil in field in different grazing system grassland were test.The results showed that ecological indicators of vegetation in no grazing grassland,rotation grazing grassland and over grazing grassland were significant differences,sand and sandy loam were the mainly parts of soil texture.Soil bulk density,soil organic matter,soil porosity and soil water holding capacity changed in different grazing systems a irregular.The relationships of soil organic matter in different grazing system was no grazing greater than rotation grazing and greater than over grazing.The relationship of soil porosity in different grazing system was no grazing greater than over grazing and greater than rotation grazing.Performance analysis based on soil water holding ability,the water performance of no grazing grassland was best,it was most favorable for vegetation growth,then the rotation grazing and over grazing was poor.Soil and water conservation of no grazing grassland and rotation grazing grassland were better than over grazing grassland.So the changed part of over grazing grassland converted to rotation grazing grassland and no grazing grassland.
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Variability of water quality in wuliangsuhai lake receiving drainage water from hetao irrigation sys
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