[1]胡天然,王树力*.东北黑土区乌裕尔河流域侵蚀沟变化过程及影响因素[J].南京林业大学学报(自然科学版),2018,42(01):113-119.[doi:10.3969/j.issn.1000-2006.201606039 ]
 HU Tianran,WANG Shuli*.Factors affecting gully erosion Wuyuer River watershed of the black soil region[J].Journal of Nanjing Forestry University(Natural Science Edition),2018,42(01):113-119.[doi:10.3969/j.issn.1000-2006.201606039 ]
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东北黑土区乌裕尔河流域侵蚀沟变化过程及影响因素
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《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

卷:
42
期数:
2018年01期
页码:
113-119
栏目:
研究论文
出版日期:
2018-01-31

文章信息/Info

Title:
Factors affecting gully erosion Wuyuer River watershed of the black soil region
文章编号:
1000-2006(2018)01-0113-07
作者:
胡天然12王树力1*
1.东北林业大学林学院, 黑龙江 哈尔滨 150040; 2.黑龙江省水土保持科学研究院, 黑龙江 哈尔滨 150070
Author(s):
HU Tianran12 WANG Shuli1*
1.College of Forestry, Northeast Forestry University, Harbin 150040,China; 2.Heilongjiang Soil and Water Conservation Science Institute, Harbin 150070, China
关键词:
乌裕尔河流域 侵蚀沟 侵蚀沟裂度 降水侵蚀力 侵蚀过程
Keywords:
Keywords:Wuyuer River watershed erosion gully gully erosion degree rain erosion ability erosion process
分类号:
S157.1
DOI:
10.3969/j.issn.1000-2006.201606039
文献标志码:
A
摘要:
【目的】分析黑土区侵蚀沟数量、面积和侵蚀程度的变化特点,确定侵蚀沟变化过程的影响因素及其对侵蚀沟变化的影响程度。【方法】依据1965年美国CORONA卫星、2005年法国SPOT5卫星及2012年中国卫星所拍摄的3期乌裕尔河流域遥感影像,提取侵蚀沟信息的变化数据。结合地质地貌、土壤因素、气候特点、土地利用覆盖信息和人为活动状况,分析侵蚀沟的变化过程及主要影响因素。【结果】与1965相比,2012年乌裕尔河流域的侵蚀沟数量增加4.03倍,侵蚀沟长度增加2.67倍,侵蚀沟面积增加6.62倍,平均侵蚀沟裂度增加6.61倍。1965—2005年,侵蚀沟裂度平均每年增加77.45 m2/km2; 2005—2012年,侵蚀沟裂度平均每年增加143.51 m2/km2。2005—2012年侵蚀沟裂度增加的速率是1965—2005年的1.85倍。影响乌裕尔河流域侵蚀沟发展过程的主要因素为降水、地形、土壤、土地利用类型和人类活动。其中,侵蚀沟裂度的变化受降水侵蚀力和距居民点距离的影响最大。降水侵蚀力大于120 MJ·mm/(hm2·h)后,侵蚀沟裂度显著变大; 研究区轻度风险侵蚀沟和中度风险侵蚀沟占83%,强烈风险侵蚀沟占16%,极强烈及剧烈风险侵蚀沟占1%。【结论】在黑土区经营过程中,应注意土地资源的保护,按侵蚀沟险度进行科学治理,实现土地资源的可持续利用。
Abstract:
【Objective】We aimed to identify the changes in the characteristics such as number, area and degree of erosion in the eroded gullies of the black soil region, and determine the effect of underlying factors.【Method】Data on changes in gully erosion was extracted from a remote sensing film of Wuyuer River watershed, which was recorded by the American satellite CORONA in 1965, the French satellite SPOT5 in 2005, and a Chinese satellite in 2012. Based on the change in gully erosion and information on the factors affecting this process, such as geological landform, soil, climate, land-use coverage, and human activities, the process determining gully erosion and the extent of the effects of the factors mentioned above were analyzed.【Result】 From 1965 to 2012, the number of eroded gullies, their length, area, and the degree of erosion increased 4.03,2.67,6.62, and 6.61 times, respectively. Gully erosion degree increased at the rate of 77.45 m2/km2 per year from 1965 to 2005, and 143.51 m2/km2 per year from 2005 to 2012.The increase in the annual rate of erosion between 2005 and 2012 was 1.85 times of that between 1965 and 2005. The main factors influencing the development process of eroded gullies in the black soil region were precipitation, topography, soil, land-use,and human activity.The effect of rain and distance of residential areas from the gully region affected erosion to the greatest extent among all the underlying factors. The degree of gully erosion increased greatly when rain erosion ability surpassed 120 MJ·mm/(hm2·h).Gully areas with light, strong, and very strong risk of erosion accounted for 83%, 16%, and 1%, respectively.【Conclusion】In the management process of the black soil area, we should pay attention to the protection of land resources, govern the erosion of gullies based on the degrees of risk, and realize the sustainable use of land resources.

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备注/Memo

备注/Memo:
基金项目:国家重点研发计划(2017YFC0504204) 第一作者:胡天然(hutianran1979@163.com),高级工程师,博士生。*通信作者:王树力(shuliwang@163.com),教授,博士。
更新日期/Last Update: 2018-03-30