| 沁河源区水源涵养功能辐射效益研究 |
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| 引用本文： | 郭新亚,杜世勋,宁婷,李霞,桑满杰,张梦莹. 沁河源区水源涵养功能辐射效益研究[J]. 水土保持研究, 2018, 25(6): 365-369,376 |
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| 作者姓名： | 郭新亚 杜世勋 宁婷 李霞 桑满杰 张梦莹 |
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| 作者单位： | 山西省生态环境研究中心, 太原 030009 |
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| 摘 要： | 以沁河源区为例，分析了水源涵养功能空间分布特征，通过构建辐射效益评估模型，估算了其水源涵养辐射量，并对辐射量和水源涵养量进行了对比。结果表明:（1）沁河源区75.40%的区域覆盖着落叶阔叶林和常绿针叶林，土壤以粉砂壤土和壤土为主，渗透性较强，水源涵养量均值234.75 m3，总量3.52亿m3，水源涵养辐射量均值168.41 m3，总量2.14亿m3；（2）99.30%的林地具有水源涵养辐射效益，林地斑块的实际辐射量占供给量的64.89%，辐射总量1.91亿m3；（3）97.12%的草地具有水源涵养辐射效益，草地斑块的实际辐射量占供给量的97.76%，辐射总量0.22亿m3；（4）94.89%的耕地具有水源涵养辐射效益，耕地斑块的实际辐射量占供给量的92.98%，辐射总量0.24亿m3。
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| 关 键 词： | 河源区 水源涵养 辐射量 |
Study on Radiation Benefit of Water Conservation Function in the Headstream Area of the Qinhe Basin |
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| GUO Xinya,DU Shixun,NING Ting,LI Xia,SANG Manjie,ZHANG Mengying. Study on Radiation Benefit of Water Conservation Function in the Headstream Area of the Qinhe Basin[J]. Research of Soil and Water Conservation, 2018, 25(6): 365-369,376 |
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| Authors: | GUO Xinya DU Shixun NING Ting LI Xia SANG Manjie ZHANG Mengying |
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| Affiliation: | Research Center for Eco-Environment Sciences in Shanxi, Taiyuan 030009, China |
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| Abstract: | The spatial distribution characteristics of water conservation function and radiation benefit were analyzed via constructing a radiation benefit assessment model. The amount of radiation benefit and water conservation function were compared. The results showed that: (1) 75.40% of the study area was covered by deciduous broad-leaved forests and evergreen coniferous forests; loam and silt loam are the main soil types in the study area, these soils have the strong permeability, the mean volume of 234.75 m3 water and a total volume of 0.352 billion m3 water were conserved in the study area, the mean volume of 168.41 m3 water and a total volume of 0.214 billion m3 water were radiated in the study area; (2) 99.30% of forestlands have radiation functions and the actual radiation amount of forest patch accounts for 64.89% of the water conservation capacity, which provide the total amount of radiation of 0.191 billion m3; (3) 97.12% of grasslands and an average of 97.76% of water conservation capacity have radiation function, which provides a total amount of radiation of 2.2 billion m3; (4) 94.89% of farmland and an average of 92.98% of water conservation capacity have radiation functions, which provide a total amount of radiation of 24 million m3. |
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| Keywords: | headstream area water conservation radiation benefit |
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