喀斯特区石漠化坡耕地产流产沙模拟试验

doi:10.16843/j.sswc.2021.04.009

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Abstract [Background] Sloping farmland is the main type of cultivated landand and also the main source of soil erosion in the karst mountain area of southwest China. Previous studies have not yet fully revealed the law of soil erosion in the karst sloping farmland, especially the influence of rainfall intensity and underground pore fissure degree on the runoff and sediment yield of sloping farmland. The proportion of surface and underground soil erosion of the total erosion in the karst sloping farmland is not clear.[Methods] In this paper, limestone soil, a representative soil in karst regin, was selected as the research soil sample, and the runoff and sediment yield characteristics of slope farmland under different rainfall intensity and underground pore fissure degree were studied by artificial rainfall simulation method. The double-layer structure of rocky desertification slope farmland in the field was simulated by drilling steel trough on the floor, and the soil was filled in three layers. One rainfall lasted for 30 min, and samples were collected and replaced every 3 minutes. The runoff was measured by measuring cylinder and sediment yield was measured by drying method. The experimental data processing was mainly completed by Excel 2013, and the mapping was completed by Origin 9.1.[Results] During the light rainfall intensity (30 mm/h), there was no runoff and sediment generated in the rocky desertification sloping farmland in karst area, mainly underground leakage. The influence of rainfall intensity on the surface runoff and sediment yield of sloping farmland was significantly positive, and the influence of underground pore fissure degree on runoff and sediment yield was significantly positive. In the case of surface runoff, the proportion of underground runoff was 35.87%-80.32%, and the proportion of underground sediment was 18.47%-72.08%. The variation trend of runoff with the rainfall duration was as follows:the overall performance increased first and then tended to stabilize of runoff yield, while the sediment yield varied with rainfall intensity and underground pore fissure degree.[Conclusions] Rainfall intensity is the main factor affecting soil and water loss of slopes in the rocky desertification area. More attention for soil erosion control should be paid to underground leakage for the slope in the rocky desertification area. Hence it can be considered to reduce soil erosion by maintaining or increasing vegetation cover on those slopes. The results may provide a theoretical reference for karst rocky desertification control and ecological restoration.

Key words： runoff sediment yield rainfall intensity underground pore fissure degree sloping farmland in karst region

Received: 22 November 2019

PACS:	S157.1
	S158.2

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	Articles by authors
	WANG Yuhong
	GAO Ruxue
	DAI Quanhou
	GAN Yixian
	YAO Yiwen

Cite this article:

WANG Yuhong,GAO Ruxue,DAI Quanhou, et al. Simulation experiment on runoff and sediment yield in sloping farmland in the rocky desertification of karst region[J]. SSWC, 2021, 19(4): 78-86.

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http://journal12.magtechjournal.com/Jweb_stbc/EN/10.16843/j.sswc.2021.04.009 OR http://journal12.magtechjournal.com/Jweb_stbc/EN/Y2021/V19/I4/78

[1]	彭旭东, 戴全厚, 李昌兰. 中国西南喀斯特坡地水土流失/漏失过程与机理研究进展[J]. 水土保持学报, 2017, 31(5):1. PENG Xudong, DAI Quanhou, LI Changlan. Research progress on the process and mechanism of soil water loss or leakage on slope in Southwest Karst of China[J]. Journal of Soil and Water Conservation, 2017, 31(5):1.
[2]	王德炉, 朱守谦, 黄宝龙. 贵州喀斯特石漠化类型及程度评价[J]. 生态学报, 2005, 25(5):1057. WANG Delu, ZHU Shouqian, HUANG Baolong.Preliminary study on types and quantitative assessment of Karst rocky desertification in Guizhou province, China[J]. Acta Ecologica Sinica, 2005, 25(5):1057.
[3]	苏维词. 中国西南岩溶山区石漠化的现状成因及治理的优化模式[J]. 水土保持学报, 2002, 16(2):29. SU Weici.Controlling model for rocky desertification of Karst mountainous region and its preventing strategy in Southwest, China[J]. Journal of Soil and Water Conservation, 2002, 16(2):29.
[4]	DAI Quanhou, PENG Xudong, ZHAO Longshan, et al. Effects of underground pore fissures on soil erosion and sediment yield on Karst slopes[J]. Land Degradation & Development, 2017, 28(7):1922.
[5]	蒋忠诚, 曹建华, 杨德生, 等. 西南岩溶石漠化区水土流失现状与综合防治对策[J]. 中国水土保持科学, 2008, 6(1):37. JIANGZhongcheng, CAO Jianhua, YANG Desheng, et al. Current status and comprehensive countermeasures of soil erosion for Karst rocky desertification areas in the southwestern China[J]. Science of Soil and Water Conservation, 2008, 6(1):37.
[6]	GAO Jiangbo, WANG Huan. Temporal analysis on quantitative attribution of Karst soil erosion:A case study of a peak-cluster depression basin in Southwest China[J]. Catena, 2019(172):369.
[7]	PENG Tao, WANG Shijie. Effects of land use, land cover and rainfall regimes on the surface runoff and soil loss on Karst slopes in Southwest China[J]. Catena, 2012, 90(1):53.
[8]	ZHOU Jie, TANG Yiqun, YANG Ping, et al. Inference of creep mechanism in underground soil loss of Karst conduits I. Conceptual model[J]. Natural Hazards, 2012, 62(3):1191.
[9]	WANG Jianxiu, ZOU Baoping, LIU Yan, et al. Erosion-creep-collapse mechanism of underground soil loss for the Karst rocky desertification in Chenqi village, Puding county, Guizhou, China[J]. Environmental Earth Sciences, 2014, 72(8):2751.
[10]	CAO Zihao, ZHANG Zhuodong, ZHANG Keli, et al. Identifying and estimating soil erosion and sedimentation in small Karst watersheds using a composite fingerprint technique[J]. Agriculture Ecosystems & Environment,2020(294):106881.
[11]	张信宝, 王世杰, 贺秀斌, 等. 碳酸盐岩风化壳中的土壤蠕滑与岩溶坡地的土壤地下漏失[J]. 地球与环境, 2007, 269(3):202. ZHANG Xinbao, WANG Shijie, HE Xiubin, et al. Soil creeping in weathering crustss of carbonate rocks and underground soil losses on Karst slopes[J]. Earth and Environment, 2007, 269(3):202.
[12]	周念清, 李彩霞, 江思珉, 等. 普定岩溶区水土流失与土壤漏失模式研究[J]. 水土保持通报, 2009, 29(1):7. ZHOU Nianqing, LI Caixia, JIANG Simin, et al.Models of soil and water loss and soil leakage in Puding Karst area[J]. Bulletin of Soil and Water Conservation, 2009, 29(1):7.
[13]	唐益群, 张晓晖, 周洁, 等. 喀斯特石漠化地区土壤地下漏失的机理研究:以贵州普定县陈旗小流域为例[J]. 中国岩溶, 2010, 29(2):121. TANG Yiqun, ZHANG Xiaohun, ZHOU Jie, et al. The mechanism of underground leakage of soil in Karst rocky desertification areas:A case in Chenqi small watershed, Puding, Guizhou province[J]. Carsologica Sinica, 2010, 29(2):121.
[14]	冯腾, 陈洪松, 张伟, 等. 桂西北喀斯特坡地土壤137Cs的剖面分布特征及其指示意义[J]. 应用生态学报, 2011, 22(3):47. FENG Teng, CHEN Hongsong, ZHANG Wei, et al. 137Cs profile distribution character and its implication for soil erosion on Karst slopes of Northwest Guangxi[J]. Chinese Journal of Applied Ecology, 2011, 22(3):47.
[15]	蔡雄飞, 王济, 雷丽, 等. 不同雨强对我国西南喀斯特山区土壤侵蚀影响的模拟研究[J]. 水土保持学报, 2009, 23(6):5. CAI Xiongfei, WANG Ji, LEI Li, et al.Laboratorial simulation of different rainfall intensity influence on soil erosion in Southwest Karst area, China[J]. Journal of Soil and Water Conservation, 2009, 23(6):5.
[16]	高儒学, 戴全厚, 甘艺贤, 等. 不同雨强下喀斯特坡耕地养分流失特征研究[J]. 土壤学报, 2019, 56(5):1072. GAO Ruxue, DAI Quanhou, GAN Yixian, et al.Characteristics of nutrient loss from sloping farmland in Karst region as a function of rainfall intensity[J]. Acta Pedologica Sinica, 2019, 56(5):1072.
[17]	杨宇琼, 戴全厚, 李昌兰, 等. 模拟降雨条件下喀斯特坡耕地氮磷元素地下漏失特征[J]. 中国水土保持科学, 2018, 16(3):59. YANG Yuqiong, DAI Quanhou, LI Changlan, et al. Characteristics of nitrogen and phosphorus underground loss in Karst slope farmlands under simulated rainfall[J]. Science of Soil and Water Conservation, 2018, 16(3):59.
[18]	伏文兵, 戴全厚, 严友进. 喀斯特坡耕地及其浅层孔(裂)隙土壤侵蚀响应试验研究[J]. 水土保持学报, 2015, 29(2):11. FU Weibing, DAI Quanhou, YAN Youjin. The response of soil erosion in Karst slope and its shallow underground crevasse ratios[J]. Journal of Soil and Water Conservation, 2015, 29(2):11.
[19]	张文源, 王百田, 杨光檄, 等. 喀斯特黄壤区侵蚀性降雨及产沙特征分析[J]. 生态环境学报, 2014, 23(11):1776. ZHANG Wenyuan, WANG Baitian, YANG Guangxi, et al. Erosive rainfall and characteristics analysis of sediment yield on yellow soil area in Karst mountainous[J]. Ecology and Environment Sciences, 2014, 23(11):1776.
[20]	MESHESHA D T, TSUNEKAWA A, HAREGEWEYN N. Influence of raindrop size on rainfall intensity, kinetic energy, and erosivity in a sub-humid tropical area:A case study in the northern highlands of Ethiopia[J]. Theoretical and Applied Climatology, 2019, 136(3/4):1221.
[21]	ANGULO-MARTÍNEZ M, BARROS A P. Measurement uncertainty in rainfall kinetic energy and intensity relationships for soil erosion studies:An evaluation using PARSIVEL disdrometers in the Southern Appalachian Mountains[J]. Geomorphology, 2015, 228(1):28.
[22]	李瑞, 李勇, 刘云芳. 贵州喀斯特地区降雨与坡面土壤侵蚀关系研究[J]. 水土保持研究, 2012,19(3):7. LI Rui, LI Yong, LIU Yunfang.Study of rainfall and soil erosion on slope in Karst region of Guizhou province[J]. Research of Soil and Water Conservation, 2012, 19(3):7.
[23]	魏兴萍, 谢世友, 张志伟, 等. 重庆南平镇岩溶槽谷区不同土地利用类型地表水土流失[J]. 农业工程学报, 2011, 27(6):42. WEI Xingping, XIE Shiyou, ZHANG Zhiwei, et al.Characteristics of surface soil erosion of Karst valley in different land use types at Nanping in Chongqing[J]. Transactions of the CSAE, 2011, 27(6):42.
[24]	邓龙洲, 张丽萍, 孙天宇, 等. 南方风化花岗岩坡地产流过程与侵蚀率模拟研究[J]. 水土保持学报, 2020, 34(3):35. DENG Longzhou, ZHANG Liping, SUN Tianyu, et al. Simulation study on runoff processes and erosion rate on the weathered granite slope in southern China[J]. Journal of Soil and Water Conservation, 2020, 34(3):35.
[25]	DENG Longzhou, ZHANG Liping, FAN Xiaojuan, et al. Effects of rainfall intensity and slope gradient on runoff and sediment yield from hillslopes with weathered granite[J]. Environmental Science and Pollution Research, 2019, 26(31):32559.
[26]	王蕙, 胡秀君, 山成菊. 雨强和坡度对嵌套砾石红壤坡面产流产沙的影响[J]. 水土保持学报, 2018, 32(4):24. WANG Hui, HU Xiujun, SHAN Chengju.Effect of rainfall intensity and slope gradient on runoff and sediment yield on the red soil slope nested gravel-sand[J]. Journal of Soil and Water Conservation, 2018,32(4):24.
[27]	JOHN G. Turloughs and tiankengs:Distinctive doline forms[J]. Carsologica Sinica, 2006, 32(2):4.
[28]	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):274. 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):274.
[29]	李晋, 熊康宁, 王仙攀. 喀斯特地区小流域地下水土流失观测研究[J]. 中国水土保持, 2012(6):38. LI Jin, XIONG Kangning, WANG Xianpan. Observation of subterranean soil and water loss of Karst area[J]. Soil and Water Conservation in China, 2012(6):38.
[30]	XIONG Kai, YIN Chuan, JI Hongbing. Soil erosion and chemical weathering in a region with typical Karst topography[J]. Environmental Earth Sciences, 2018, 77(13):1.