红壤区坡面次降雨产流产沙研究
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- 英文论文题名：Study on the runoff andsediment yield under individual ranifall events in red soil region
- 论文作者：黄俊 ; 亢庆 ; 杨建新 ; 金平伟 ; 吴丹 ; 李乐 ; 刘斌
- 英文论文作者：Huang Jun ; Kang Qing ; Yang Jianxin ; Jin Pingwei ; Wu Dan ; Liu Le ; Liu Bin ; Pearl River Hydraulic Research Institute ; Pearl River Water Resources Commission of the Ministry of Water Resources ; Soil and Water Conservation Monitoring Center of Pearl River Basin ; Pearl River Water Resources Commission of the Ministry of Water Resources
- 年：2015
- 作者机构：珠江水利委员会珠江水利科学研究院;珠江水利委员会珠江流域水土保持监测中心站;
- 论文关键词：临界雨强 ; 土壤入渗 ; 覆盖度 ; 径流系数 ; 降雨侵蚀力
- 英文论文关键词：critical rainfall intensity ; soil infiltration ; vegetation cover ; runoff coefficient ; rainfall erosivity
- 会议召开时间：2015-09-01
- 会议录名称：2015海峡两岸水土保持学术研讨会论文集（上）
- 英文会议录名称：Proceedings of Cross-strait Symposium on Soil and Water Conservation 2015
- 语种：中文
- 分类号：S157.1
- 学会代码：OGSJ
- 会议名称：2015海峡两岸水土保持学术研讨会
- 会议地点：中国山西太原
- 主办单位：中国水土保持学会、台湾中华水土保持学会
- 学会名称：中国水土保持学会
- 页数：6
- 文件大小：1896k
- 原文格式：O
- 会议级别：全国
摘要
基于广东省五华县水土保持试验推广站野外径流场观测数据,对林草坡面次降雨入渗、产流产沙进行了研究。次降雨入渗量与植被覆盖度相关系数为0.948(P=0.05)。次降雨入渗量与降雨强度间存在二次抛物线变化关系,存在使次降雨入渗量达最大值的临界降雨强度;人工林及灌草地临界雨强为19.9—27.8 mmh~(-1),均高于自然撂荒地。次降雨径流深及土壤流失量与覆盖度间相关系数分别为-0.954和-0.926,均达到显著水平(P=0.05)。次降雨坡面侵蚀率随径流系数呈幂函数增加趋势,径流含沙量随径流系数、降雨侵蚀力呈对数函数增加趋势,土壤流失量随降雨侵蚀力呈线性递增趋势。次降雨土壤流失量与径流深关系可采用线性函数进行定量描述。次降雨径流深小于20 mm时,土壤流失量随径流深增加而递增速率较快。
This paper investigated the soil infiltration,runoff and sediment yield under individual rainfall events,based on the observed data from the field runoff plots in the promotion test station of Wuhua county of Guangdong province.The correlation coefficient between the infiltration amount and vegetation cover was 0.9481,reaching to the significant level(P = 0.05).The quadratic parabola equation can be used to described the relationship between the infiltration amount and rainfall intensity.There was the critical rainfall intensity which produced the largest infiltration amount.The critical rainfall intensity for the artificial forest and the shrub-grassland ranged from 19.9 mm h~(-1) to 27.8 mm h~(-1),and were larger than that for the natural abandoned land.The correlation coefficient between runoff depth and soil loss and vegetation cover were-0.9536 and-0.9263,respectively.Erosion rate increased with significantly increasing runoff coefficient by the power function,sediment concentration increased with significantly increasing runoff coefficient and rainfall erosivity by the logarithmic function,and soil loss increased with significantly increasing rainfall erosivity by the linear function.The linear function can be used to describe the relationship between soil loss and runoff depth.The increased rate of soil loss with increasing runoff depth,when the individual rainfall amount was less than 20 mm.
This paper investigated the soil infiltration,runoff and sediment yield under individual rainfall events,based on the observed data from the field runoff plots in the promotion test station of Wuhua county of Guangdong province.The correlation coefficient between the infiltration amount and vegetation cover was 0.9481,reaching to the significant level(P = 0.05).The quadratic parabola equation can be used to described the relationship between the infiltration amount and rainfall intensity.There was the critical rainfall intensity which produced the largest infiltration amount.The critical rainfall intensity for the artificial forest and the shrub-grassland ranged from 19.9 mm h~(-1) to 27.8 mm h~(-1),and were larger than that for the natural abandoned land.The correlation coefficient between runoff depth and soil loss and vegetation cover were-0.9536 and-0.9263,respectively.Erosion rate increased with significantly increasing runoff coefficient by the power function,sediment concentration increased with significantly increasing runoff coefficient and rainfall erosivity by the logarithmic function,and soil loss increased with significantly increasing rainfall erosivity by the linear function.The linear function can be used to describe the relationship between soil loss and runoff depth.The increased rate of soil loss with increasing runoff depth,when the individual rainfall amount was less than 20 mm.
引文
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[2]郑华,欧阳志云,王效科,等.不同森林恢复类型对南方红壤侵蚀区土壤质量的影响[J].生态学报,2004,24(9):1994-2002.
[3]余新晓,秦永胜.森林植被对坡地不同空间尺度侵蚀产沙影响分析[J].水土保持研究,2001,8(4):66-69,99.
[4]王玉宽,王勇强,傅斌,等.紫色土坡面降雨侵蚀试验研究[J].山地学报,2006,24(5):597-600.
[5]王民,崔灵周,李占斌,等.模拟降雨条件下径流侵蚀力与地貌特征的动态响应关系[J].水利学报,2008,39(9):1105-1110.
[6]袁东海,王兆骞,陈欣,等.不同农作措施红壤坡耕地水土流失特征的研究[J].水土保持学报,2001,15(4):66-69.
[7]汪邦稳,肖胜生,张光辉,等.南方红壤区不同利用土地产流产沙特征试验研究[J].农业工程学报,2012,28(2):239-243.
[8]李新平,陈欣,王兆骞,等.等高植物篱笆条件下红壤坡耕地水土流失的发生特征[J].浙江大学学报(农业与生命科学版),2003,29(4):368-374.
[9]孙佳佳,于东升,史学正,等.植被叶面积指数与覆盖度定量表征红壤区土壤侵蚀关系的对比研究[J].土壤学报,2010,47(6):106C-1066.
[10]黄俊,赵西宁,吴普特.基于通径分析和灰色关联理论的坡面产流产沙影响因子分析[J].四川大学学报(工程科学版),2012,44(5):64-70.
[11]鲁克新,李占斌,张霞,等.室内模拟降雨条件下径流侵蚀产沙试验研究[J].水土保持学报,2011,25(2):6-9,14.
[12]黄俊,吴普特,赵西宁.坡面生物调控措施对土壤水分入渗的影响[J].农业工程学报,2010,26(10):29-37.
[13]江淼华,黄荣珍,谢锦升,等.闽北不同土地利用方式水土流失与降雨量的关系研究[J].闽江学院学报,2011,32(5):125-129.
[14]韩永刚,王维明,杨玉盛.闽北不同土地利用方式径流量动态变化特征[J].水土保持研究,2006,13(5):262-266.
[15]Cerda A,Morera A G,Bodi M B.Soil and water losses from new citrus orchards growing on sloped soils in the western Mediterranean basin[J].Earth Surface Processes and Landforms,2009,34(13):1822-1830.
[16]Parsons A],Brazier R E,Wainwright J,et al.Scale relationships in hillslope runoff and erosion[J].Earth Surface Processes and Landforms,2006,31(11):1384-1393.
[17]Raya A M,Zuazo V,Martinez J.Soil erosion and runoff response to plant-cover strips on semiarid slopes(SE Spain)[J].Land Degradation&Development,2006,17(1):1-11.
[18]Narayana D V,Babu R.Estimation of soil erosion in India[J].Journal of Irrigation and Drainage Engineering,1983,109(4):419-434.
[19]Zheng M G,Cai Q G,Cheng Q J.Sediment yield modeling for single storm events based on heavy-discharge stage characterized by stable sediment concentration[J].Intemanonal Journal of Sediment Research,2007,22(3):208-217.
[20]Zheng M G,Cai Q G,Cheng Q J.Modelling the runoff-sediment yield relationship using a proportional function in hilly areas of the Loess Plateau,North China[J].Geomorphology,2008,93(3):288-301.