| 区域水土流失面积与平均土壤侵蚀模数关系探究 |
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| 引用本文： | 李晶晶,张建国,贾利红,张亚琳,焦念.区域水土流失面积与平均土壤侵蚀模数关系探究[J].中国水土保持,2021(5):36-38,I0001. |
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| 作者姓名： | 李晶晶 张建国 贾利红 张亚琳 焦念 |
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| 作者单位： | 黄河流域水土保持生态环境监测中心;晋陕蒙接壤地区水土保持监督局;黄河流域水土保持生态环境监测临潼分中心;黄河水土保持西峰治理监督局 |
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| 基金项目： | 国家重点研发计划“水资源高效开发利用”重点专项(2016YFC0402408-3);水利部财政预算项目(126201340009180001)。 |
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| 摘 要： | 采用黄河流域(片)国家级防治区中部分县级行政区2020年度水土流失动态监测成果及对应的平均土壤侵蚀模数,建立了不同县级行政区县域面积、各侵蚀强度等级面积与其平均土壤侵蚀模数之间的关系,进而推算不同区域的土壤流失量。结果表明,临界土壤侵蚀模数与平均土壤侵蚀模数之间存在较好的线性关系。根据建立的拟合关系,推算出不同时期黄土高原多沙区土壤流失量,1990—2019年黄土高原多沙区累积保土量为213.44亿t。
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| 关 键 词： | 水土流失 土壤侵蚀模数 保土量 黄土高原多沙区 |
The Relationship Between Regional Soil Erosion Area and Average Soil Erosion Modulus |
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| Institution: | (Ecological Environment Monitoring Center for Soil and Water Conservation in the Yellow River Basin,Xi’an,Shaanxi 710021,China;Bureau of Soil and Water Conservation Supervision in the Contiguous Areas of Shanxi,Shaanxi and Inner Mongolia,Yulin,Shaanxi 719000,China) |
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| Abstract: | By using the dynamic monitoring results of soil and water loss and average soil erosion modulus in 2020 of some county-level administrative regions in the national prevention and control area of the Yellow River basin,the paper established the relationship between the county area and the area of each erosion intensity grade with its average soil erosion modulus of different county administrative regions,then calculated the soil loss in different regions.The outcomes show that there is a good linear relationship between the critical soil erosion modulus and the average soil erosion modulus.According to the established fitting relationship,it calculates the amount of soil loss in sandy area of loess plateau in different periods.In the period of 19902019,the cumulative soil conservation in sandy area of loess plateau is 21.344 billion tons. |
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| Keywords: | soil and water loss soil erosion modulus soil conservation sandy area of loess Plateau |
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