| 氯离子守恒法确定土壤生态蓄水量 |
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| 引用本文： | 代晓娟,李绪谦,贾素萍,王鹏,刘燕平,金光红.氯离子守恒法确定土壤生态蓄水量[J].吉林大学学报(地球科学版),2006(Z1). |
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| 作者姓名： | 代晓娟 李绪谦 贾素萍 王鹏 刘燕平 金光红 |
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| 作者单位： | [1]吉林大学环境与资源学院 [2]中国科学院生态环境研究中心 [3]长春理工大学化工学院 [4]九台市环保局 [5]九台市环保局 长春 [6]吉林九台 |
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| 基金项目： | 国家“973”项目(2004CB418505) |
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| 摘 要： | 通过实验测得降水及土壤水的氯离子浓度,依据化学守恒原理,即降水与包气带土壤水中氯离子的质量守恒关系,计算出长春市丘陵、台地、阶地3类不同地貌区土壤一年内所得水量,该水量为土壤生态蓄水量。将土壤生态蓄水量与土壤的田间持水量、作物的生态需水量进行对比分析,评述了三者之间的关系。阐明土壤生态蓄水量不仅能客观反映土壤中的水分含量情况,也能对植被生态需水量的满足情况给予客观评价。
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| 关 键 词： | 氯离子质量守恒 土壤生态蓄水量 降水 作物生态需水量 田间持水量 |
Determining Ecological Water Demand of Soil Using Chloride Mass-Balance Method |
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| DAI Xiao-juan.Determining Ecological Water Demand of Soil Using Chloride Mass-Balance Method[J].Journal of Jilin Unviersity:Earth Science Edition,2006(Z1). |
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| Authors: | DAI Xiao-juan |
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| Abstract: | The paper obtained chloride concentration of precipitation and soil moisture in lab firstly,and according to chemical conservation law,which is the chloride mass-balance law of precipitation and soil moisture of unsaturated zone,calculated ecological store water capacity of soil in three sorts of landforms,mound,tableland and bench in Changchun.Then the paper analyzes soil ecological store water capacity,field hold capacity and ecological water demand of vegetation contrastively,expounding their connections.Elucidating soil ecological store water capacity,can not only reflect water storage of soil,but can also objectively appraise the content extent to ecological water demand of vegetation. |
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| Keywords: | chloride mass-balance ecological store water capacity of soil precipitation ecological water demand of vegetations field hold capacity |
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