湖南蒸水流域近20年土壤侵蚀时空变化

doi:10.16843/j.sswc.2021.02.005

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Abstract [Background] Soil erosion may lead to serious hazards, such as flood and land degradation and it is one of the global ecological and environmental issues. The quantitative evaluation of soil erosion at the basin scale can provide data support and reference for soil and water conservation planning and soil erosion control. At present, there are few studies on the spatial and temporal changes of soil erosion in the long time at the large watersheds scope. [Methods] This study was based on the basic theory of soil erosion science and the GIS technology. Factors of influencing soil erosion in 1995, 2000, 2005, 2010 and 2015 were calculated with daily rainfall data of climate stations from 1961 to 2018, land-use data and DEM data using the methods of spatial interpolation et al. CSLE model was used to assess the spatial variations of soil erosion intensity and determine the distribution of soil erosion grade from 1995 to 2015. [Results] 1) The annual mean of rainfall erosivity factor R value was between 4 275 and 5 934 MJ·mm/(hm²·h·a) in Zhengshui River Basin with high spatial heterogeneity, the average soil erodibility factor K value was 0.004 333 t·hm²·h/(hm²·MJ·mm), the average slope and slope length factor LS value was 4.45, the vegetation cover and biological practice factor B value was between 0.445 6 and 0.451 1, the engineering practice factor E value was between 0.710 9 and 0.714 3, and the tillage practice factor T value was between 0.705 6 and 0.709 5. 2) The average soil erosion modulus were 412, 520, 479, 530 and 528 t/(km²·a) respectively in 1995, 2000, 2005, 2010 and 2015. The average erosion modulus of this 5 years was 494 t/(km²·a), which belonged to the slight erosion level. 3) The modulus of soil erosion changed with elevation and the soil erosion of different land types from high to low was listed as rain fed cropland, forest land, sparse woodland and paddle field. 4) During the study period, erosive rainfall change was the main factor leading the change of the soil erosion modulus. 5) The calculated results of erosion in the control range of hydrometric station were much larger than the measured sediment. The sediment and the sediment transport ratio decreased year by year. High-coverage forests and grasses in the watershed, soil and water conservation projects participate in the process of intercepting sediment, causing most of the sediment to deposit locally or along the way, and ultimately failing to reach the sediment outlets of various hydrological stations, making the sediment delivery ratio much smaller. [Conculsions] The soil erosion calculation result is bigger than the observed value of sediment in Zhengshui River Basin. The assessment soil loss value is valuable for reference. Hengyang county, Shaodong county and Hengnan county are the key areas of soil and water conservation in the future.

Key words： spatio-temporal change soil erosion quantitative evaluation Chinese soil loss equation (CSLE) Zhengshui River Basin

Received: 29 September 2019

PACS:

S157.1

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	WANG Haitao
	XIE Hongxia
	YANG Qinke
	ZHOU Qing
	DUAN Liangxia

Cite this article:

WANG Haitao,XIE Hongxia,YANG Qinke, et al. Spatio-temporal variation of the soil erosion in Zhengshui River Basin, Hunan province[J]. SSWC, 2021, 19(2): 33-42.

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http://journal12.magtechjournal.com/Jweb_stbc/EN/10.16843/j.sswc.2021.02.005 OR http://journal12.magtechjournal.com/Jweb_stbc/EN/Y2021/V19/I2/33

[1]	MONTANARELLA L. Govern our soils[J]. Nature, 2015. 528(7580):32.
[2]	刘宝元, 杨扬, 陆绍娟.几个常用土壤侵蚀术语辨析及其生产实践意义[J].中国水土保持科学, 2018, 16(1):9. LIU Baoyuan, YANG Yang, LU Shaojuan. Discriminations on common soil erosion terms and their implications for soil and water conservation[J].Science of Soil and Water Conservation, 2018, 16(1):9.
[3]	周洋, 姜敏, 李梦雨, 等.湘中丘陵区紫色土坡耕地水土保持措施效益的试验研究[J].水土保持学报, 2017, 31(6):134. ZHOU Yang, JIANG Min, LI Mengyu, et al. Experimental study on benefits of soil and water conservation measures on purple sloping farmland of the hilly area in central Hunan[J]. Journal of Soil and Water Conservation, 2017, 31(6):134.
[4]	WISCHMEIER W H, SMITH D D. Predicting rainfall erosion losses:A guide to conservation planning[M].Agriculture Handbook No.537, Washington DC:United States Department of Agriculture USDA, 1978:4.
[5]	王品, 陈一, 张朝. 基于水文和作物模型的农业洪涝灾害风险研究:以蒸水流域水稻种植区为例[C]//中国灾害防御协会风险分析专业委员会第六届年会论文集. 北京:中国灾害防御协会风险分析专业委员会, 2014:178. WANG Pin, CHEN Yi, ZHANG Zhao. Assessing risk of agricultural flood disaster using process-based models of hydrology and crop[C]//Proceedings of the sixth annual meeting of risk analysis committee of China disaster prevention association. Beijing:Risk Analysis Committee of China Disaster Prevention Association, 2014:178.
[6]	罗兰花, 谢红霞, 宁迈进, 等. 蒸水流域1961-2012年径流演变规律研究[J].长江科学院院报, 2019, 36(8):42. LUO Lanhua, XIE Hongxia, NING Maijin, et al. Variation trend of runoff in Zhengshui River Watershed from 1961 to 2012[J].Journal of Yangtze River Scientific Research Institute, 2019, 36(8):42.
[7]	LIU Baoyuan, ZHANG Keli, XIE Yun. An empirical soil loss equation[C]//JIAO Yuren, Proceeddings of the 12th International Soil Conservation Organization Conference. Beijing:Tsinghua University Press, 2002, 2:15.
[8]	水利部水土保持监测中心. 区域水土流失动态监测技术规定(试行)[EB/OL]. (2018-08-27)[2019-08-30]. http://www.swcc.org.cn/zcfg/2018-08-27/65661.html. Monitoring Center of Soil and Water Conservation, Ministry of Water Resources. Technical regulation on dynamic monitoring of regional soil and water loss(Trial)[EB/OL]. (2018-08-27)[2019-08-30]. http://www.swcc.org.cn/zcfg/2018-08-27/65661.html.
[9]	殷水清,章文波,谢云,等.中国降雨侵蚀力的时空分布及重现期研究[J].中国水土保持,2013(10):45. YIN Shuiqing, ZHANG Wenbo, XIE Yun, et al. Spatial distributions of rainfall erosivity in China based on high density stations data[J].Soil and Water Conservation in China, 2013(10):45.
[10]	国务院第一次全国水利普查领导小组办公室. 第一次全国水利普查培训教材之六:水土保持情况普查[M]. 北京:中国水利水电出版社,2010:226. Office of the First National Leadership Group of the National Water Resources Census of the State Council. Sixth training materials for the first national water conservancy census:A survey of soil and water conservation[M]. Beijing:China Water & Power Press, 2010:226.
[11]	XIE Hongxia, ZHOU Qing, ZHENG Shengyun, et al. Spatio-temporal change of the cover and management factor in the soil erosion prediction model in Hunan province, China[C]//In The Proceedings of Seventh International Conference on Agro-Geoinformatics. Hangzhou:Zhejiang University. 2018:2.
[12]	焦如珍, 杨承栋, 屠星南, 等. 杉木人工林不同发育阶段林下植被、土壤微生物、酶活性及养分的变化[J].林业科学研究, 1997, 10(4):373. JIAO Ruzhen, YANG Chengdong, TU Xingnan, et al. The change of undergrowth, soil microorganism, enzyme activity and nutrient in different developing stage of the Chinese fir plantation[J]. Forest Research, 1997, 10(4):373.
[13]	崔飞. 中亚热带炼山造林后杉木人工林林下植被及土壤C、N、P特征[D]. 长沙:中南林业科技大学, 2015:24. CUI Fei. The characteristics of the understory vegetation and soil C,N,P of Chinese fir plantation under burning afforestation conditions in the central subtropical region, China[D].Changsha:Central South University of Forestry and Technology, 2015:24.
[14]	谢红霞, 李锐, 杨勤科, 等. 退耕还林(草)和降雨变化对延河流域土壤侵蚀的影响[J].中国农业科学, 2009, 42(2):569. XIE Hongxia, LI Rui, YANG Qinke, et al. Effect of returning farmland to forest (pasture) and changes of precipitation on soil erosion in the Yanhe Basin[J].Scientia Agricultura Sinica, 2009, 42(2):569.
[15]	谢红霞. 延河流域土壤侵蚀时空变化及水土保持环境效应评价研究[D].西安:陕西师范大学,2008:48. XIE Hongxia. Evaluation of soil erosion and environmental effects of soil and water conservation in Yanhe river basin[D].Xi'an:Shaanxi Normal University, 2008:48.
[16]	张信宝,文安邦.长江上游干流和支流河流泥沙近期变化及其原因[J].水利学报,2002,33(4):56. ZHANG Xinbao, WEN Anbang. Variations of sediment in upper stream of Yangtze River and its tributary[J]. Journal of Hydraulic Engineering, 2002, 33(4):56.
[17]	WILLIAMS J R. The Erosion-Productivity Impact Calculator (EPIC) model:A case history[J]. Philosophical Transactions of the Royal Society B Biological Sciences, 1990, 329(1255):421.
[18]	杨欣, 郭乾坤, 王爱娟, 等. 基于小区实测数据的不同类型土壤可蚀性因子计算[J].水土保持通报, 2019, 39(4):114. YANG Xing, GUO Qiankun, WANG Aijuan, et al. Calculation of soil erodibility factor under different soil types based on runoff plot data[J]. Bulletin of Soil and Water Conservation, 2019, 39(4):114.