渗透指数在黄土丘陵沟壑区径流输沙与覆被格局关系研究中的适用性

刘宇

中国农村水利水电 ›› 2017 ›› (11) : 35-40.
水环境与水生态

渗透指数在黄土丘陵沟壑区径流输沙与覆被格局关系研究中的适用性

  • 刘宇
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The validity of Leakiness index in coupling runoff and sediment delivery and vegetation cover pattern on the Loess Plateau

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摘要

植被覆盖格局与水土流失之间的相互作用是流域水文、土壤侵蚀研究的热点议题。定量植被覆盖格局是反映流域植被格局变化水土流失效应的途径之一。基于水土流失过程发展而来的指标在这方面有很好的潜力。文章拓展了小尺度上发展起来的渗透指数(Leakiness Index, LI),结合黄土高原6个流域2000-2008年的径流、输沙监测数据和植被覆盖度数据,在流域尺度上对其有效性进行检验。结果表明,渗透指与流域输沙之间具有很好的指数关系,使用该指数可定量表达流域植被覆盖格局对流域输沙的影响,但对植被格局对径流的影响表达不足。该指数具有一定的过程意义,可作为评价不同植被配置格局输沙效应、甄选流域水土保持植被格局设计方案的工具。

Abstract

Interaction between vegetation cover pattern and soil and water loss is a hotspot in hydrology and soil erosion research. Quantifying vegetation cover pattern can indicate the soil and water loss potential under a vegetation cover pattern. Indicators incorporating soil and water loss mechanism are effective in handling this issue. In this study, the efficiency of leakiness index (LI) developed based on plot and hillslope experiments was tested at the watershed scale. The results revealed an exponential relationship between LI and sediment delivery. It indicates the validity of LI in reflecting the impact of vegetation cover pattern on sediment delivery. However, the LI lost the effectiveness in linking vegetation cover pattern with runoff. It is concluded that LI is capable to indicate the effect of vegetation cover pattern on sediment delivery, and additionally, to be a powerful tool for evaluation vegetation pattern planning for soil loss control.

基金

基于水文连接的景观格局变化及其土壤保持和碳储存效应评价;生态过程-服务-需求框架下土壤保持服务的形成机制和尺度效应研究

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刘宇. 渗透指数在黄土丘陵沟壑区径流输沙与覆被格局关系研究中的适用性[J].中国农村水利水电, 2017(11): 35-40
. The validity of Leakiness index in coupling runoff and sediment delivery and vegetation cover pattern on the Loess Plateau[J].China Rural Water and Hydropower, 2017(11): 35-40

参考文献

[1]Puigdefábregas J.The role of vegetation patterns in structuring runoff and sediment fluxes in drylands[J].Earth Surface Processes and Landforms, 2005, 30(2):133-147
[2]李强, 李占斌, 尤洋, 等.植被格局对坡面产流产沙影响的试验研究[J].水资源与水工程学报, 2007, 18(5):31-34
[3]刘宇, 吕一河, 傅伯杰.景观格局-土壤侵蚀研究中景观指数的意义解释及局限性[J].生态学报, 2011, 30(1):267-275
[4]刘宇, 吴炳方, 张磊, 等.耦合过程与格局的土壤流失生态环境影响评价方法[J].应用生态学报, 2013, 24(9):2581-2589
[5]Bautista S, Mayor á G, Bourakhouadar J, et al.Plant spatial pattern predicts hillslope runoff and erosion in a semiarid Mediterranean landscape[J].Ecosystems, 2007, 10:987-998
[6]Ludwig J A, Eager R W, Bastin G N, et al.A leakiness index for assessing landscape function using remote sensing[J].Landscape Ecology, 2002, 17:157-171
[7]Mayor á G, Bautista S, Small E E, et al.Measurement of the connectivity of runoff source areas as determined by vegetation pattern and topography: A tool for assessing potential water and soil losses in drylands[J].Water Resources Research, 2008, 44(10):W10423-
[8]刘宇.水蚀流域土地覆被格局土壤保持能力空间分布式评价[J].中国水土保持科学, 2014, 12(2):92-98
[9]Ouyang Wei, Andrew K S, Hao Fanghua, et al.Soil erosion dynamics response to landscape pattern[J].Science of the Total Environment, 2010, 408:1358-1366
[10]索安宁, 洪军, 林勇, 等.黄土高原景观格局与水土流失关系研究[J].应用生态学报, 2005, 16(9):1719-1723
[11]张素梅, 王宗明, 闫百兴, 等.辉发河流域景观格局与土壤侵蚀的关系研究[J].水土保持学报, 2008, 22(3):29-35
[12]Borselli L, Cassi P, Torri D.Prolegomena to sediment and flow connectivity in the landscape: A GIS and field numerical assessment[J].Catena, 2008, 75:268-277
[13]Imeson A C, Prinsen H A M.Vegetation patterns as biological indicators for identifying runoff and sediment source and sink areas for semi-arid landscapes in Spain[J].Agriculture, Ecosystems & Environment, 2004, 104:333-342
[14]Zuazo V H D, Pleguezuelo C R R.Soil-Erosion and Runoff Prevention by Plant Covers: A Review[J].Agronomy for Sustainable Development, 2008, 28:65-86
[15]Ludwig J A, Bastin G N, Chewings V H, et al.Leakiness: A new index for monitoring the health of arid and semiarid landscapes using remotely sensed vegetation cover and elevation data[J].Ecological Indicators, 2007, 7:442-454
[16]Chen Liding, Wei Wei, Fu Bojie, et al.Soil and water conservation on the Loess Plateau in China: review and perspective[J].Progress in Physical Geography, 2007, 31:389-403
[17]赵英时.遥感应用分析原理与方法[M]. 北京:科学出版社,2003:391-392.
[18]陈军, 周启星.数字地形分析[M].北京:科学出版社, 2006:158-161.
[19]汪丽娜, 王勇, 高鹏, 等.黄土高原粗泥沙集中来源区水沙变化特征及趋势性分析[J].水土保持通报, 2008, 28(2):11-16
[20]沈瑞昌,张光辉,张永萱,等.黄土高原小流域次暴雨洪峰流量影响因素分析[J].中国水土保持科学, 2015, 13(2):24-30
[21]张晓萍,张橹,王勇,等.黄河中游地球年径流量对土地利用变化的时空响应分析[J].中国水土保持科学, 2009, 7(1):19-26
[22]钱云平, 蒋秀华, 金双彦, 等.黄河中游黄土高原区河川基流特点及变化分析[J].地球科学与环境学报, 2004, 26(02):88-91

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