Soil Erosion Mapping at County Scale Based on Index of Soil Erosion Severity of Small Watersheds

Li Ao; Gu Zhijia

doi:10.13961/j.cnki.stbctb.20200908.001

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Soil Erosion Mapping at County Scale Based on Index of Soil Erosion Severity of Small Watersheds

- Soil Erosion Mapping at County Scale Based on Index of Soil Erosion Severity of Small Watersheds
- Bulletin of Soiland Water Conservation Vol. 40, Issue 5, Pages: 196-200(2020)
- 作者机构：
  
  1. 北京师范大学地表过程与资源生态国家重点实验室,北京,100875
  2. 北京师范大学地理科学学部,北京,100875
  3. 信阳师范学院地理科学学院, 河南省水土环境污染协同防治重点实验室,河南,信阳,464000
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.20200908.001
  CLC： S157.1
- Published：2020
- 稿件说明：
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Li Ao, Gu Zhijia. Soil Erosion Mapping at County Scale Based on Index of Soil Erosion Severity of Small Watersheds[J]. Bulletin of Soiland Water Conservation, 2020, 40(5): 196-200.
DOI：

Li Ao, Gu Zhijia. Soil Erosion Mapping at County Scale Based on Index of Soil Erosion Severity of Small Watersheds[J]. Bulletin of Soiland Water Conservation, 2020, 40(5): 196-200. DOI： 10.13961/j.cnki.stbctb.20200908.001.

摘要

[目的] 开展水土流失调查，提取和制作必需的数据、图件及相关资料，实现水土流失调查对县域水土保持规划的全面支撑。[方法] 基于黑龙江省齐齐哈尔市拜泉县小流域划分，开展土壤侵蚀严重指数图、土壤侵蚀强度图和水土流失面积比例图的对比分析。[结果] 基于小流域土壤侵蚀严重指数的县域土壤侵蚀图具有明显的比较优势：①该图能够综合反映县域水土流失的面积、强度和分布，并定量、精准地落实到水蚀单元——小流域上；②基于该图，能够直接生成规划必需的水土流失重点防治区分布图、水土流失防治格局图和重点项目分布图；③基于该图，结合小流域土壤侵蚀强度图，可为小流域尺度上、治理模式层面的措施典型设计及其配置提供落实到地块的基础数据。[结论] 从开展水土流失调查，划定水土流失重点预防区和重点治理区、全面支撑水土保持规划的全流程角度分析，基于小流域土壤侵蚀严重指数的县域土壤侵蚀制图具有更好的比较优势。

Abstract

[Objective] A soil and water loss survey was conducted. The necessary data

the maps

and other relevant data were obtained to provide comprehensive support for water and soil conservation plans at county scale.[Methods] Based on the small watershed division in Baiquan County

Qiqihar City

Heilongjiang Province

a comparative analysis was used for soil loss mapping using the indices of soil erosion severity

soil erosion intensity

and the proportions of soil and water loss areas.[Results] Mapping based on the index of the soil erosion severity of a small watershed had obvious comparative advantages. ① The map can comprehensively reflect the area

intensity

and distribution of soil and water loss in the county. These can be implemented quantitatively and accurately to the water erosion unit—the small watershed. ② Based on this map

the distribution map of key prevention and control areas of soil and water loss

soil and water loss prevention

and the control layout map and major projects distribution map can be created directly. ③ The map

combined with the soil erosion intensity map of small watersheds

can provide necessary data for typical measure designs and configurations on a small watershed scale. Those data can be implemented to every plot.[Conclusion] From the perspective of carrying out a soil and water loss survey

delimitation of key prevention and control areas of soil and water loss

and comprehensively supporting the whole process of soil and water conservation planning

the county scale soil erosion mapping based on the index of the soil erosion severity of a small watershed has better comparative advantages.

关键词

Keywords

references

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