Impacts of Different Types of Ecosystem Conversion on Soil Wind Erosion in Key Ecological Functional Zone in Inner Mongolia Autonomous Region

Lu Zhongqiu; Dou Yinyin; Wang Junzhi; Guo Changqing; Chai Yukun; He Shujuan

doi:10.13961/j.cnki.stbctb.2024.04.026

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Impacts of Different Types of Ecosystem Conversion on Soil Wind Erosion in Key Ecological Functional Zone in Inner Mongolia Autonomous Region

- Impacts of Different Types of Ecosystem Conversion on Soil Wind Erosion in Key Ecological Functional Zone in Inner Mongolia Autonomous Region
- Bulletin of Soiland Water Conservation Vol. 44, Issue 4, Pages: 247-256(2024)
- 作者机构：
  
  1. 内蒙古自治区测绘地理信息中心,内蒙古,呼和浩特,010010
  2. 中国科学院地理科学与资源研究所陆地表层格局与模拟重点实验室,北京,100101
  3. 中国科学院大学,北京,100049
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2024.04.026
  CLC： P237
- Published：2024
- 稿件说明：
移动端阅览
Lu Zhongqiu, Dou Yinyin, Wang Junzhi, et al. Impacts of Different Types of Ecosystem Conversion on Soil Wind Erosion in Key Ecological Functional Zone in Inner Mongolia Autonomous Region[J]. Bulletin of Soiland Water Conservation, 2024, 44(4): 247-256.
DOI：

Lu Zhongqiu, Dou Yinyin, Wang Junzhi, et al. Impacts of Different Types of Ecosystem Conversion on Soil Wind Erosion in Key Ecological Functional Zone in Inner Mongolia Autonomous Region[J]. Bulletin of Soiland Water Conservation, 2024, 44(4): 247-256. DOI： 10.13961/j.cnki.stbctb.2024.04.026.

摘要

[目的

]

内蒙古自治区重点生态功能区是中国北方生态安全重要屏障。揭示该区生态系统类型转换及对土壤风蚀的影响，为促进该区生态环境安全与绿色发展提供科学参考。[方法

]

基于土地利用、气象和基础地理信息等数据，采用修正的土壤风蚀方程模型，揭示内蒙古地区重点生态功能区生态系统类型与土壤风蚀的时空变化特征，并剖析生态系统类型转换及其对土壤风蚀的影响。[结果

]

①2000—2022年内蒙古地区重点生态功能区内生态系统间转换强烈，生态系统类型转换总面积6 019.59 km

，以草地与荒漠以及耕地与林草的相互转化为主，2015年之后生态系统趋向稳定，各类生态系统动态变化强度降低； ②内蒙古地区重点生态功能区平均土壤风蚀模数为56.39 t/hm

，按土壤风蚀量由大到小为荒漠、草地、农田和森林生态系统，土壤风蚀程度以微度和轻度侵蚀为主，主要分布在大小兴安岭森林生态功能区和科尔沁草原生态功能区等区域； ③内蒙古地区重点生态功能区各类生态系统类型之间的转换造成土壤风蚀量净减少了1.08×10

t，生态退耕、耕地开垦、草地质量提升、荒漠化防治和建设用地扩展造成土壤风蚀模数分别减少了0.11，0.23，0.66，0.84，0.68 t/hm

。[结论

]

应加强巩固内蒙古重点生态功能区的生态治理成效，避免复垦与新开荒事件发生，促进内蒙古地区荒漠化综合防治及高质量发展。

Abstract

[Objective] The key ecological functional zone (KEFZ) of the Inner Mongolia Autonomous Region serves as a critical ecological barrier for the security of Northern China. The ecosystem type conversion and its impact on soil wind erosion was analysed in order to provide scientific reference for promoting ecological environment security and green development in this region. [Methods] The revised wind erosion equation (RWEQ) model based on land use

meteorology

and basic geographical information data was adopted to determine spatiotemporal changes in ecosystem structure and soil wind erosion in the KEFZ. This method revealed the impacts of ecosystem type changes on soil wind erosion. [Results] ① Substantial conversion between ecosystems in the KEFZ was observed

with a total area of change amounting to 6 019.59 km2 from 2000 to 2022. The main transformations were between grasslands and deserts

and between cultivated land and forest-grassland ecosystems. The ecosystem tended to stabilise after 2015

with a reduction in the intensity of changes across various ecosystem types. ② The average soil wind erosion modulus in the KEFZ was 56.39 t/hm2

with the erosion levels the highest in desert ecosystems

followed by grasslands

farmlands

and forests. Soil wind erosion was predominantly slight and light

mainly occurring in areas such as the Greater and Lesser Khingan Range forest ecological function area and the Horqin Grassland ecological function area. ③ The conversion between different types of ecosystems in the KEFZ resulted in a net reduction in soil wind erosion of 1.08×108 t. Ecological restoration

land reclamation

grassland quality improvement

desertification control

and the expansion of construction land decreased soil wind erosion modulus by 0.11

0.23

0.66

0.84 t/hm2

and 0.68 t/hm2

respectively. [Conclusion] Strengthening the consolidation of the effectiveness of ecological management in the KEFZ and avoiding the occurrence of and new land reclamation will be conducive to the comprehensive prevention and control of desertification and high-quality development in Inner Mongolia Autonomous Region.

关键词

Keywords

references

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