[1]阚欣玥,张 洪*.低丘缓坡建设开发对土壤侵蚀的影响[J].山地学报,2021,(1):25-37.[doi:10.16089/j.cnki.1008-2786.000573]
 KAN Xinyue,ZHANG Hong*.Influence of Land Construction and Development on Soil and Water Loss in Low Hill Slope[J].Mountain Research,2021,(1):25-37.[doi:10.16089/j.cnki.1008-2786.000573]
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低丘缓坡建设开发对土壤侵蚀的影响()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2021年第1期
页码:
25-37
栏目:
山地环境
出版日期:
2021-01-25

文章信息/Info

Title:
Influence of Land Construction and Development on Soil and Water Loss in Low Hill Slope
文章编号:
1008-2786-(2021)1-025-13
作者:
阚欣玥张 洪*
云南财经大学 城市与环境学院,昆明 650000
Author(s):
KAN XinyueZHANG Hong*
School of Urban and Environment, Yunnan University of Finance and Economics, Kunming 650000, China
关键词:
低丘缓坡 建设开发 土壤侵蚀 RUSLE方程 滇中地区
Keywords:
low hill and gentle slope land utilization soil erosion RUSLE model central Yunnan
分类号:
S157.1
DOI:
10.16089/j.cnki.1008-2786.000573
文献标志码:
A
摘要:
低丘缓坡建设开发是否导致水土流失以及多大程度的水土流失,是学术界一直争论的问题。本文以最早在全省开展低丘缓坡建设开发的云南省为例,选择具有代表性的滇中地区62个低丘缓坡建设开发项目区为研究对象,结合对项目区进行实地踏勘,采用修正的通用土壤侵蚀方程(Revised Universal Soil Erosion Equation, RUSLE),对滇中地区低丘缓坡项目区2010年和2018年(即建设开发前后)土壤侵蚀状况及其时空变化特征进行定量分析,探讨低丘缓坡建设开发所造成的地形、土地利用类型及植被覆盖率的变化对土壤侵蚀的影响。结果表明:(1)整体上滇中地区62个项目区在开发后土壤侵蚀状况趋向好转,具体表现为微度侵蚀等级面积净增加;(2)低覆盖草地、 灌木以及≥15°坡耕地,水土保持能力较弱。其中,草地和灌木的水土流失面积较大,占总水土流失面积达76.57%;(3)水土流失高发区主要集中在坡度≥8°的区域,若仅考虑引起水土流失面积大小,8°~25°区域内的水土流失情况最为严重,占总水土流失面积68.54%; 而从引起水土流失难易程度上,坡度≥25°发生水土流失的概率最高,平均水土流失面积占该坡度面积62.05%。综上,本文揭示低丘缓坡建设开发对土壤侵蚀的影响,为项目区水土流失防治和危害评估提供数据支撑,并为区域生态修复和综合治理提供参考和依据。
Abstract:
Whether and to what extent the soil and water loss is caused by engineered activities in the areas of low-hill and gentle slope has been a controversial issue in academic society. In this study, Yunnan province, which was the first to campaign for commercial exploitation of low-hills and gentle slopes in China, was taken as case study for field investigation on soil erosion. 62 engineering projects in central Yunnan were selected as research targets, representative of typical land utilizations in low-hill and gentle slope areas. The Revised Universal Soil Erosion Equation(RUSLE)was used to quantitatively analyze the field observations of the in-situ soil erosions in the projects and their temporal and spatial variation characteristics in 2010 and 2018(i.e., before and after the implementation of these projects). And then the influence of changes in topography, land use type and vegetation coverage on soil erosion caused by the projects was elaborated. The results showed that:(1)Generally,the soil erosion incurred by 62 project in central Yunnan tended to be improved after the execution of the projects, which was exemplified by a net increase in the area with micro-erosion grade;(2)Low-cover grassland, shrub and sloping farmland ≥15° had weak soil and water conservation ability; Among them, grassland and shrubs had a large area of soil erosion, accounting for 76.57% of the total area of soil erosion;(3)The areas with high soil erosion were mainly concentrated in the areas with a slope of ≥8°. If only the area causing soil erosion is considered, the area with slopes between 8°~25° had the most serious soil erosion, accounting for 68.54% of the total; The probability in causing soil erosion was the highest in the areas with a slope of ≥25°, and the average area of soil erosion accounted for 62.05% of the specific sloping area.In summary, this paper revealed the influence of land development on soil erosion in low hill slope, provided further data support for soil erosion control, hazard assessment in the project area and reference for regional ecological restoration and comprehensive management.

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备注/Memo

备注/Memo:
收稿日期(Received date):2020-04-03; 改回日期(Accepted date): 2021-1-31
基金项目(Foundation item):国家自然科学基金(71764034)。[National Natural Science Foundation of China(71764034)]
作者简介(Biography):阚欣玥(1994-),女,河北唐山人,硕士研究生,主要研究方向:土地规划利用。[KAN Xinyue(1994-),female,born in Tangshan,Hebeiprovince, M.Sc.candidate,researchon land use planning〗 E-mail:1396640059@qq.com
*通讯作者(Corresponding author):张洪(1958-),男,四川成都人,教授,主要研究方向:城市发展与土地利用研究。[ZHANG Hong(1958-), male, born in Chengdu, Sichuan province, professor, research on city development and land use] E-mail: zhanghong0957@126.com
更新日期/Last Update: 2021-01-30