鄂东南崩岗不同层次土壤分形特征及抗蚀性研究

doi:10.11870/cjlyzyyhj201601008

长江流域资源与环境 >> 2016, Vol. 25 >> Issue (01): 63-70.doi: 10.11870/cjlyzyyhj201601008

鄂东南崩岗不同层次土壤分形特征及抗蚀性研究

邓羽松¹, 李双喜², 丁树文¹, 蔡崇法¹, 夏栋¹, 刘丹露¹

1. 华中农业大学水土保持研究中心, 湖北武汉 430070;
2. 长江水利委员会长江流域水土保持监测中心站, 湖北武汉 430010

收稿日期:2015-05-06 修回日期:2015-07-22 出版日期:2016-01-20
通讯作者: 丁树文 E-mail:dingshuwen@mail.hzau.edu.cn
作者简介:邓羽松(1988~),男,博士研究生,主要从事水土保持与生态环境方面研究.E-mail:dennyus@163.com
基金资助:
国家科技支撑计划子课题(2011BAD31B04)"红壤崩岗侵蚀区农田质量保护与崩岗治理技术与示范"[National Science and technologysupport program sub project (2011BAD31B04) "The protection of farmland quality in red soil erosion area and the control technology anddemonstration of collapsing gully"];国家自然科学基金(41571258)"花岗岩红壤优先流及其与崩岗侵蚀发育的关系"[National NaturalScience Foundation of China (41571258)"Preferential flow of red soil in granite and its relation to the development of collapsing gullyerosion"];华中农业大学国家级大学生创新创业训练计划(201510504021)"花岗岩崩岗不同层次土壤可蚀性与抗冲性对龛形成的影响"[National College Students Innovation and entrepreneurship training program of Huazhong Agricultural University (201510504021)"The granitearea in different soil layers affect the corrosion resistance and impact resistance of niche formation"]

RESEARCH ON DIFFERENT SOIL LAYERS OF COLLAPSING GULLY FRACTAL CHARACTERISTICS AND EROSION CHARACTERISTICS IN TONGCHENG

DENG Yu-song¹, LI Shuang-xi², DING Shu-wen¹, CAI Chong-fa¹, XIA Dong¹, LIU Dan-lu¹

1. Research Center of Water and Soil Conservation, Huazhong Agricultural University, Wuhan 430070, China;
2. Changjiang Soil Conservation Monitoring Centre, CWRC, Wuhan 430010, China

Received:2015-05-06 Revised:2015-07-22 Online:2016-01-20

摘要/Abstract

摘要： 崩岗是鄂东南地区极其严重的土壤侵蚀类型,影响范围广,破坏性强。选择鄂东南通城县花岗岩崩岗不同层次土壤进行研究,主要分析崩岗剖面土壤颗粒分形维数、可蚀性、渗透性及水稳性,并通过回归分析等方法建立其与土壤性质之间的拟合关系。结果表明:鄂东南通城县崩岗土层表土层、红土层、斑纹层以及碎屑层的性质存在较大差异,土壤颗粒分形维数D由表土层至碎屑层呈减小的趋势,土壤可蚀性K值由表土层至碎屑层呈增加的趋势,水稳性指数则呈现减小的趋势,渗透性则表现为红土层小而表土层和碎屑层大的规律。同时,相关性分析以及多元线性回归分析显示,崩岗剖面土壤颗粒分形维数、可蚀性、渗透性以及水稳性之间关系密切,抗蚀性与土体性质之间的相关性显著。研究旨在明确了崩岗发生的内在因素,为阐述崩岗的发生机理提供了依据。

关键词: 崩岗, 分形维数, 可蚀性, 渗透性, 水稳性

Abstract: Collapsing gully is an extremely serious soil erosion type in the southeast of Hubei Province, which has a wide range of influence and destruction. Therefore, it is important to study the mechanism of the collapsing gully and erosion mechanism for improving the ecological environment of agricultural areas. We chose the granite in Tongcheng County, Southeastern Hubei collapsing at different levels to study soil, mainly toanalyze collapsing gully profile fractal dimension of soil particle, erodibility, permeability and water stability, and through regression analysis and other methods to establish the relationship between soil properties. Results showed that:the soil of collapsing gully in Tongcheng County in Southeastern Hubei topsoil layer, clay layer and markings layer and debris layer properties are quite different, soil particle fractal dimension D from surface soil to detritus layer showed a decreasing trend, soil erodibility K values from surface soil to detritus layer showed an increasing trend, water stable index showed a decreasing trend, permeability is laterite layer and the surface soil layer and debris layer of rules. At the same time, the correlation analysis and multivariate linear regression analysis showed that profiles of slope disintegration of soil particle fractal dimension, can be erosion resistance, permeability and water stability between closely related, the correlation between anti erodibility and soil properties significantly. The purpose of this study is to clarify the internal factors of the occurrence of collapsing gully, and to provide a basis for the occurrence mechanism of the collapsing gully.

Key words: Collapsing Gully, fractal dimension, erodibility, permeability, water stability

中图分类号:

S157.1

邓羽松, 李双喜, 丁树文, 蔡崇法, 夏栋, 刘丹露. 鄂东南崩岗不同层次土壤分形特征及抗蚀性研究[J]. 长江流域资源与环境, 2016, 25(01): 63-70.

DENG Yu-song, LI Shuang-xi, DING Shu-wen, CAI Chong-fa, XIA Dong, LIU Dan-lu. RESEARCH ON DIFFERENT SOIL LAYERS OF COLLAPSING GULLY FRACTAL CHARACTERISTICS AND EROSION CHARACTERISTICS IN TONGCHENG[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2016, 25(01): 63-70.

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