喀斯特地区县域土壤侵蚀估算及其对土地利用变化的响应

doi:10.16843/j.sswc.2017.05.006

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Abstract [Background] In the Karst region of Southwest China, where is characterized with the fragile ecological environment and sharp contradiction between the large population and limited land resources, rocky desertification is severe. The changes of land use types and degrees of human disturbances would affect soil loss amount and levels of rocky desertification. Therefore, it is important to simulate the soil erosion in the Karst area and to study the response of soil erosion to land use type changes.[Methods] Based on the modified RMMF model and ArcGIS technology, this paper simulated the soil erosion in Huanjiang County in 1991, 2000 and 2010. The response of soil erosion to land use type changes was simulated under the same rainfall condition.[Results]Fine agreements of RMMF simulated soil loss and observations from hydrological stations were obtained. The results showed that the soil erosion modulus decreased from 76.36 t/(km²·a) in 1991 and 76.46 t/(km²·a) in 2000 to 49.60 t/(km²·a) in 2010. The sediment yields were 34.76×10⁴, 34.80×10⁴ and 22.58×10⁴ t for 1991, 2000 and 2010, respectively. The non-Karst area is the main sediment source area, and its mean soil loss amount accounted for about 94% of total soil loss amount of Huanjiang County. Most areas suffered from slight degree of soil erosion, accounting for more than 90%, while the other areas suffered from higher levels of soil erosion, accounting for very small proportion. Compared with values of other land use types, the soil erosion modulus of dry land was much larger, followed by medium coverage grassland. Specifically, over 80% and 70% of soil loss amounts were from dry lands for Karst area and non-Karst area, respectively. For the same land use type, the non-Karst area had a larger soil erosion modulus than the Karst area. In the scenario simulation, the rainfall data of 1991 was used instead of the original rainfall data to estimate soil erosion in 2000 and 2010, and the sediment yield decreased 4.21×10⁴ t from 1991 to 2010 due to the decrease in dry land area. The sediment yields in 2010 decreased by 4.21% and 8.76% of those in 2000 for Karst area and non-Karst area, respectively.[Conculsions] These results indicated that the soil erosion amount had reduced since 2010 by reducing the dry land area and increasing vegetation coverage in Huanjiang County. This study may provide a reference basis for regional soil erosion estimation and soil-water conservation effectiveness assessment in Karst region.

Key words： soil erosion RMMF model Karst land use type

Received: 31 March 2017

PACS:

S157.1

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	LI Chengzhi
	LIAN Jinjiao
	CHEN Hongsong
	FENG Teng
	FU Zhiyong

Cite this article:

LI Chengzhi,LIAN Jinjiao,CHEN Hongsong, et al. Estimation of soil erosion and its response to land use change in Karst regions at county scale[J]. SSWC, 2017, 15(5): 39-47.

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http://journal12.magtechjournal.com/Jweb_stbc/EN/10.16843/j.sswc.2017.05.006 OR http://journal12.magtechjournal.com/Jweb_stbc/EN/Y2017/V15/I5/39

[1]	曹建华,鲁胜力,杨德生,等. 西南岩溶区水土流失过程及防治对策[J]. 中国水土保持科学,2011,9(2):55. CAO Jianhua,LU Shengli,YANG Desheng,et al. Process of soil and water loss and its control measures in karst regions,southwestern China[J]. Science of Soil and Water Conservation,2011,9(2):55.
[2]	张信宝,王世杰,曹建华,等. 西南喀斯特山地水土流失特点及有关石漠化的几个科学问题[J]. 中国岩溶,2010,29(3):275. ZHANG Xinbao,WANG Shijie,CAO Jianhua,et al. Characteristics of water loss and soil erosion and some scientific problems on Karst rocky desertification in Southwest China karst area[J]. Carsologica Sinica,2010,29(3):275.
[3]	FU Bojie,ZHAO Wenwu,CHEN Liding,et al. A multiscale soil loss evaluation index[J]. Science Bulletin,2006,51(4):448.
[4]	赵文武,傅伯杰,吕一河,等. 多尺度土地利用与土壤侵蚀[J]. 地理科学进展,2006,25(1):24. ZHAO Wenwu,FU Bojie,LV Yihe,et al. Land use and soil erosion at multiscale[J]. Process in Geography,2006,25(1):24.
[5]	XU Yueqing,SHAO Xiaomei,KONG Xiangbin,et al. Adapting the RUSLE and GIS to model soil erosion risk in a mountains Karst watershed,Guizhou Province,China[J]. Environmental Monitoring & Assessment,2008,141(1/2/3):275.
[6]	曾凌云,汪美华,李春梅. 基于RUSLE的贵州省红枫湖流域土壤侵蚀时空变化特征[J]. 水文地质工程地质,2011,38(2):113. ZENG Lingyun,WANG Meihua,LI Chunmei. Study on soil erosion and its spatio-temporal change at Hongfeng Lake watershed based on RUSLE Model[J]. Hydrogeology & Engineering Geology,2011,38(2):113.
[7]	倪九派,袁道先,谢德体,等. 基于GIS的岩溶槽谷区小流域土壤侵蚀量估算[J]. 应用基础与工程科学学报,2010,18(2):217. NI Jiupai,YUAN Daoxian,XIE Deti,et al. Estimating soil erosion in small watershed of Karst valley area using GIS[J]. Journal of Basic Science and Engineering,2010,18(2):217.
[8]	王尧, 蔡运龙, 潘懋. 贵州省乌江流域土壤侵蚀模拟:基于GIS、RUSLE和ANN技术的研究[J]. 中国地质, 2014(5):1735. WANG Yao, CAI Yunlong, PAN Mao, et al. Soil erosion simulation of the Wujiang River Basin in Guizhou Province based on GIS, RUSLE and ANN[J]. Geology in China, 2014, 41(5):1735.
[9]	CHEN Ping,LIAN Yanqing. Modeling of soil loss and its impact factors in the Guijiang Karst River Basin in southern China[J]. Environmental Earth Sciences,2016,75(4):352.
[10]	龙明忠,吴克华,熊康宁. WEPP模型(坡面版)在贵州石漠化地区土壤侵蚀模拟的适用性评价[J]. 中国岩溶,2014,33(2):201. LONG Mingzhong,WU Kehua,XIONG Kangning. Assessment of the applicability of the WEPP model (Hillslope Version) for soil erosion in Karst rock desertification area,Guizhou Province[J]. Carsologica Sinica,2014,33(2):201.
[11]	余丹,孙丽娜,于俊峰,等. 基于SWAT的猫跳河流域径流及土壤侵蚀模拟研究[J]. 中国农学通报,2012,28(17):256. YU Dan,SUN Li'na,YU Junfeng,et al. Simulation on soil erosion and streamflow in Maotiaohe Watershed of Guizhou Province based on SWAT Model[J]. Chinese Agricultural Science Bulletin,2012,28(17):256.
[12]	LI Changbin,QI Jiaguo,FENG Zhaodong,et al. Quantifying the effect of ecological restoration on soil erosion in China's Loess Plateau region:an application of the MMF approach[J]. Environmental Management,2010,45(3):476.
[13]	张莉,苗连朋,温仲明. 基于MMF模型估算植被与降雨变化对水沙的影响:以延河流域为例[J]. 自然资源学报,2015,30(3):446. ZHANG Li,MIAO Lianpeng,WEN Zhongming. Estimating the effect of vegetation and precipitation on runoff and sediment using the MMF Model:A case study in the Yanhe River Basin[J]. Journal of Natural Resources,2015,30(3):446.
[14]	FENG Teng,CHEN Hongsong,WANG Kelin,et al. Modeling soil erosion using a spatially distributed model in a karst catchment of northwest Guangxi,China[J]. Earth Surface Processes & Landforms,2014,39(15):2121.
[15]	MORGAN R P C,DUZANT J H. Modified MMF (Morgan-Morgan-Finney) model for evaluating effects of crops and vegetation cover on soil erosion[J]. Earth Surface Processes & Landforms,2008,32(1):90.
[16]	JAYAWARDENA A W,REZAUR R B. Drop size distribution and kinetic energy load of rainstorms in Hong Kong[J]. Hydrological Processes,2000,14(6):1079.
[17]	BRANDT C J. Simulation of the size distribution and erosivity of raindrops and throughfall drops[J]. Earth Surface Processes & Landforms,1990,15(8):697.
[18]	文丽,宋同清,杜虎,等. 中国西南喀斯特植物群落演替特征及驱动机制[J]. 生态学报,2015,35(17):5830. WEN Li,SONG Tongqing,DU Hu,et al. The succession characteristics and its driving mechanism of plant community in karst region,Southwest China[J]. Acta Ecologica Sinica,2015,35(17):5830.
[19]	陈洪松,杨静,傅伟,等. 桂西北喀斯特峰丛不同土地利用方式坡面产流产沙特征[J]. 农业工程学报,2012,28(16):124. CHEN Hongsong,YANG Jing,FU Wei,et al. Characteristics of slope runoff and sediment yield on Karst hill-slope with different land-use types in Northwest Guangxi[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE),2012,28(16):124.
[20]	黄承标,谭卫宁,覃文更,等. 木论喀斯特森林水土流失规律研究[J]. 水土保持研究,2012,19(4):36. HUANG Chengbiao,TAN Weining,QIN Wengeng,et al. Study on soil and water loss in Karst forest in Mulun[J]. Research of Soil and Water Conservation,2012,19(4):36.
[21]	谢小立,王凯荣. 红壤坡地雨水地表径流及其侵蚀[J]. 农业环境科学学报,2004,23(5):843. XIE Xiaoli,WANG Kairong. Surface runoff from rainfall and its erosion on slop lands of a red soil[J]. Journal of Agro-Environment Science,2004,23(5):843.
[22]	张信宝,王世杰,孟天友,等. 农耕驱动西南喀斯特地区坡地石质化的机制[J]. 地球与环境,2010,38(2):125. ZHANG Xinbao,WANG Shijie,MENG Tianyou,et al. Mechanisms for cultivation-driving land rocky desertification on carbonate rock slopes in the karst region of Southwest China[J]. Earth and Environment,2010,38(2):125.
[23]	梁钊雄,王兮之,魏兴琥,等. 基于TM影像的广西河池市岩溶地区植被覆盖度的动态变化研究[J]. 中国岩溶,2014,33(2):210. LIANG Zhaoxiong,WANG Xizhi,WEI Xinghu,et al. Study of dynamic changes in fractional vegetation coverage in Hechi City in Guangxi karst regions based on TM images[J]. Carsologica Sinica,2014,33(2):210.
[24]	童晓伟,王克林,岳跃民,等. 桂西北喀斯特区域植被变化趋势及其对气候和地形的响应[J]. 生态学报,2014,34(12):3428. TONG Xiaowei,WANG Kelin,YUE Yuemin,et al. Trends in vegetation and their responses to climate and topography in Northwest Guangxi[J]. Acta Ecologica Sinica,2014,34(12):3428.