| 呼伦贝尔天然草地地貌部位对土层厚度和土壤水分的影响 |
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| 引用本文： | 徐学军,刘洪鹄,张平仓. 呼伦贝尔天然草地地貌部位对土层厚度和土壤水分的影响[J]. 干旱区资源与环境, 2010, 0(4) |
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| 作者姓名： | 徐学军 刘洪鹄 张平仓 |
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| 作者单位： | 长江水利委员会长江勘测规划设计研究院;长江水利委员会长江科学院; |
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| 基金项目： | 国家科技支撑计划项目(2008BAD98B02)资助 |
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| 摘 要： | 草原开垦破坏草地植被,并且破坏了整个草原的生态环境,这已取得共识。然而,目前还有人想开垦呼伦贝尔天然草地来追求短期的利益。通过调查一个天然草地坡面的土层厚度和土壤水分,分析天然草地地貌部位对土层厚度和土壤水分的影响,以此为根据来阐述开垦天然草地的利害。结果表明:上部样点含水量低,坡脚和坡底样点含水量依次增加;黑土层保水性好,黄粘土层透水性差,砂土层保水性很差;坡面80%的面积黑土层小于或等于30cm,开垦压实以后厚度只能满足暂时耕作的需要。呼伦贝尔草原地形起伏较大,干旱且多大风,易发生土壤侵蚀。开垦以后将会失去保水性好的黑土层,那时,呼伦贝尔草原前景甚忧。因此,建议不应开垦呼伦贝尔草原,并给与适当保护。
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| 关 键 词： | 呼伦贝尔 天然草地 土层厚度 土壤水分 土壤侵蚀 |
Effects of slope position on soil water content and soil depth in the Hulunbeier grassland |
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| XU Xuejun,LIU Honghu,ZHANG Pincang. Effects of slope position on soil water content and soil depth in the Hulunbeier grassland[J]. Journal of Arid Land Resources and Environment, 2010, 0(4) |
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| Authors: | XU Xuejun LIU Honghu ZHANG Pincang |
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| Affiliation: | 1Changjiang Water Resources Commission;Changjiang Institute of Survey Planning and Research;Wuhan 430010;P.R.China;2 Changjiang Water Resources Commssion;Changjiang River Scientific Research Institute;P.R.China |
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| Abstract: | Hulunbeier grassland is very important for china's non-pollution animal food.Additionally,it is a ecological barrier for Northeast China and North China.If it was destroyed,environment in Northeast and North China would be in danger.It is well known that cultivated grassland destroys vegetation,and damages the ecological environment of the grassland.However,currently some people always want to cultivate natural grassland for short-term economical profit.The purpose of this study is to analyze the character ... |
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| Keywords: | Hulunbeier natural grassland soil layer depth soil water content soil erosion |
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