| 科尔沁沙地植物生态型与地下水位及土壤水分的关系研究 |
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| 引用本文： | 马龙,刘廷玺.科尔沁沙地植物生态型与地下水位及土壤水分的关系研究[J].中国沙漠,2007,27(3):391-396. |
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| 作者姓名： | 马龙 刘廷玺 |
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| 作者单位： | 内蒙古农业大学水利与土木建筑工程学院, 内蒙古 呼和浩特 010018 |
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| 基金项目： | 国家自然科学基金;内蒙古科技攻关项目 |
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| 摘 要： | 水分是干旱区植物生长的限制因子,以生态适宜性理论为基础,根据科尔沁沙地植被生态型及典型样带调查试验资料,系统分析了植物生态型与地下水位埋深及土壤含水率的定量关系。分析表明:湿生、中生、中旱生和旱生植物地下水位埋深的变化范围分别为0.45～1.66 m、0.95～2.20 m、2.20～4.59 m和3.45～7.45 m;植物根系土壤表层含水率的变化范围分别为2.70%～25.54%、0.80%～13.32%、0.41%～2.25%和0.28%～0.44%;植物根系层含水率的变化范围分别为5.59%～54.80%、3.59%～9.19%、0.71%～3.59%和0.16%～0.78%。同时湿生植物与中生植物、中旱生植物与旱生植物有一个地下水位埋深过渡范围,其值分别为0.95～1.66 m和3.45～4.59 m;有一个植物根系土壤表层含水率过渡范围,其值分别为2.70%～13.32%和0.41%～0.44%;有一个根系层土壤含水率过渡范围,其值分别为5.59%～9.19%和0.71%～0.78%。
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| 关 键 词： | 科尔沁沙地 植物生态型 地下水位埋深 土壤水分 |
| 文章编号： | 1000-694X（2007）03-0391-06 |
| 收稿时间： | 2005-12-12 |
| 修稿时间： | 2006-01-23 |
Relationship of Plant Ecotype with Groundwater Depth and Soil Moisture in Horqin Sandy Land |
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| MA Long,LIU Ting-xi.Relationship of Plant Ecotype with Groundwater Depth and Soil Moisture in Horqin Sandy Land[J].Journal of Desert Research,2007,27(3):391-396. |
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| Authors: | MA Long LIU Ting-xi |
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| Institution: | College of Water Resources and Civil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China |
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| Abstract: | Water is a major limit factor for plant growth in arid area. Based on the ecological fitting theory, the thesis systematically analyzed the quantitative relationship between plant ecotype and groundwater depth as well as soil water content, according to the test data in sample area and the plant ecotypes in Horqin sandy land. Following results have been got: for plants of hygrophytes, mesophytes, mesoxerophytes and xerophytes, the changing range of groundwater depth is respectively 0.45～1.66 m, 0.95～2.20 m, 2.20～4.59 m, and 3.45～7.45 m; the range of surface soil water content of roots layer is respectively 2.70%～25.54%, 0.80%～13.32%, 0.41%～2.25% and 0.28%～0.44%; and the range of soil water content of roots layer is respectively 5.59%～54.80%, 3.59%～9.19%, 0.71%～3.59% and 0.16%～0.78%. Even though, some transition ranges still exist between hygrophytes and mesophytes, also between mesoxerophytes and xerophytes; the transition range of groundwater depth is respectively 0.95～1.66 m and 3.45～4.59 m, that of surface soil water content in roots layer is respectively 2.70%～13.32% and 0.41%～0.44%, and that of soil water content of roots layer is respectively 5.59%～9.19% and 0.71%～0.78%. |
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| Keywords: | Horqin sandy land plant ecotype groundwater depth soil moisture |
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