YANG Miaomiao,YANG Qinke,ZHANG Keli,et al.Research for the Factors Influencing the Stoniness Effect on Erodibility at Global Scale[J].Research of Soil and Water Conservation,2022,29(04):28-38.
全球土壤可蚀性因子砾石效应的影响因素研究
- Title:
- Research for the Factors Influencing the Stoniness Effect on Erodibility at Global Scale
- 文章编号:
- 1005-3409(2022)04-0028-11
- 分类号:
- S157.1
- 文献标志码:
- A
- 摘要:
- 为了全面认识土壤中的砾石对土壤可蚀性因子(K)的影响,即砾石效应(stoniness effect on erodibility,SEK),利用全球范围的砾石覆盖影响(St),剖面砾石影响(Kcf)、砾石覆盖和剖面砾石综合影响(Kf-cs)以及高程、坡度、坡向、植被覆盖、土地利用类型、多年平均降雨量、多年平均气温等环境要素数据,通过相关性分析、格局分析以及随机森林回归分析,探索了SEK的空间格局以及影响SEK的主控因素。结果表明:(1)高程和坡度与SEK呈正相关; 植被覆盖度、降雨量和温度与St和Kf-cs呈负相关; 降雨量与Kcf呈负相关; 温度与Kcf呈正相关; 阳坡的砾石效应大于阴坡; 耕地和林地的砾石效应较小,草地、荒漠和裸地的砾石效应较大。(2)St和Kf-cs的主控因子为高程和坡度,降雨量和温度是Kcf的主控因子。因此,在大区域土壤侵蚀评价中,对于砾石含量较大、高程较高、坡度较大的区域,均应给予特别关注,如果不加考虑,则有可能使土壤侵蚀评价结果出现偏差。
- Abstract:
- In order to comprehensively understand the effect of rock fragments in the soil on the soil erodibility factor(K), i.e. the stoniness effect on erodibility(SEK), the effect of rock fragments on the surface(St), the effect of rock fragments in profile(Kcf), the joint effect of rock fragments in profile and rock fragments on the surface(Kf-cs)and some environmental factors such as elevation, slope, slope aspect, vegetation coverage(NDVI), land use, annual average precipitation and annual average temperature at a global scale were used to explore the spatial pattern of SEK and the main controlling factors affecting SEK through correlation analysis, pattern analysis and random forest regression analysis. The results show that:(1)elevation and slope are positively correlated with SEK; vegetation coverage(NDVI), precipitation and temperature are negatively correlated with St and Kf-cs, precipitation is negatively correlated with Kcf, and temperature is positively correlated with Kcf; the influence of rock fragments on southern(sunlit)slopes is found to be greater than that on northern(shaded)slopes; the influence of rock fragments on cropland and forest is slight, while the influence of rock fragments on grassland, desert and bare land is relative heavy;(2)the main controlling factors of St and Kf-cs are elevation and slope; the main controlling factors of Kcf are precipitation and temperature. Therefore, in the evaluation of soil erosion in large regions, special attention should be paid to areas with large content of rock fragments, higher altitude and higher slope, otherwise the evaluation results of soil erosion will be biased.
参考文献/References:
[1] Renard K G, Foster G R, Weesies G A, et al. Predicting Soil Erosion by Water: A Guide to Conservation Planning with the Revised Universal Soil Loss Equation(RUSLE)[M]. Washington DC: Agricultural Handbook,1997.
[2] Liu B, Xie Y, Li Z, et al. The assessment of soil loss by water erosion in China[J]. International Soil and Water Conservation Research,2020,8(4):430-439.
[3] Panagos P, Meusburger K, Ballabio C, et al. Soil erodibility in Europe: A high-resolution dataset based on LUCAS[J]. Science of the Total Environment,2014,479(1):189-200.
[4] 杨苗苗,杨勤科,张科利,等. 砾石含量对土壤可蚀性因子估算的影响[J].土壤学报,2021,58(5):1157-1168.
[5] Marshall J A, Sklar L S. Mining soil databases for landscape-scale patterns in the abundance and size distribution of hillslope rock fragments[J]. Earth Surface Processes and Landforms,2012,37(3):287-300.
[6] Phillips J D, Luckow K, Marion D A, et al. Rock fragment distributions and regolith evolution in the Ouachita Mountains,Arkansas, USA[J]. Earth Surface Processes and Landforms: The Journal of the British Geomorpho Logical Research Group,2005,30(4):429-442.
[7] Simanton J R, Toy T J. The relation between surface rock-fragment cover and semiarid hillslope profile morphology[J]. Catena,1994,23(3/4):213-225.
[8] Nearing M A,Polyakov V O,Nichols M H,et al. Slope-velocity equilibrium and evolution of surface roughness on a stony hillslope[J]. Hydrology and Earth System Sciences,2017,21(6):3221-3229.
[9] Poesen J,Van Wesemael B,Govers G,et al. Patterns of rock fragment cover generated by tillage erosion[J]. Geomorphology,1997,18(3/4):183-197.
[10] Simanton J R, Renard K G, Christiansen C M, et al. Spatial distribution of surface rock fragments along catenas in semiarid Arizona and Nevada, USA[J]. Catena,1994,23(1/2):29-42.
[11] 朱元骏,邵明安.黄土高原水蚀风蚀交错带小流域坡面表土砾石空间分布[J].中国科学:D辑,2008,38(3):375-383.
[12] Nyssen J, Poesen J, Moeyersons J, et al. Spatial distribution of rock fragments in cultivated soils in northern Ethiopia as affected by lateral and vertical displacement processes[J]. Geomorphology,2002,43(1/2):1-16.
[13] 李燕,高明,魏朝富,等.土壤砾石的分布及其对水文过程的影响[J].中国农学通报,2006,22(5):271-276.
[14] Li X Y, Contreras S, Solé-Benet A. Spatial distribution of rock fragments in dolines: A case study in a semiarid Mediterranean mountain-range(Sierra de Gádor,SE Spain)[J]. Catena,2007,70(3):366-374.
[15] 王小燕,王天魏,蔡崇法,等.三峡库区紫色土的碎石分布特征[J].土壤学报,2014,52(2):293-302.
[16] 王慧芳,邵明安,王国丽.黄土高原土石山区碎石分布特征及其导水性质分析[J].灌溉排水学报,2010,29(3):116-120.
[17] Meng C,Niu J Z,Yin Z C,et al. Characteristics of rock fragments in different forest stony soil and its relationship with macropore characteristics in mountain area,northern China[J]. Journal of Mountain Science,2018,15(3):519-531.
[18] Liu J, Shen Y, Zhu X, et al. Spatial distribution patterns of rock fragments and their underlying mechanism of migration on steep hillslopes in a karst region of Yunnan Province, China[J]. Environmental Science and Pollution Research,2019,26(24):24840-24849.
[19] Peel M C, Finlayson B L, McMahon T A. Updated world map of the Köppen-Geiger climate classification[J]. Hydrology and Earth System Sciences,2007,11(5):1633-1644.
[20] Poesen J W, Torri D, Bunte K. Effects of rock fragments on soil erosion by water at different spatial scales: A review[J]. Catena,1994,23(1/2):141-166.
[21] Muenchow J, Dieker P, Kluge J, et al. A review of ecological gradient research in the Tropics: Identifying research gaps, future directions, and conservation priorities[J]. Biodiversity and Conservation,2018,27(2):273-285.
[22] Breiman L. Random forests[J]. Machine Learning,2001,45(1): 5-32.
[23] Hengl T, Mendes de Jesus J, Heuvelink G B M,et al. Soil grids 250 m: Global gridded soil information based on machine learning[J]. PLoS One,2017,12(2):e0169748.
[24] 张卫建,许泉,王绪奎,等.气温上升对草地土壤微生物群落结构的影响[J].生态学报,2004,24(8):1742-1747.
[25] Teng H, Liang Z, Chen S, et al. Current and future assessments of soil erosion by water on the Tibetan Plateau based on RUSLE and CMIP5 climate models[J]. Science of the Total Environment,2018,635:673-686.
[26] Borrelli P, Robinson D A, Fleischer L R, et al. An assessment of the global impact of 21st century land use change on soil erosion[J]. Nature Communications,2017,8(1):1-13.
[27] Teng H, Hu J, Zhou Y, et al. Modelling and mapping soil erosion potential in China[J]. Journal of Integrative Agriculture,2019,18(2):251-264.
[28] 逄蕾,肖洪浪,谢忠奎,等.砂田不同覆盖方式对土壤微生物组成的影响[J].中国沙漠,2012,32(2):351-358.
[29] Unger P W. Soil profile gravel layers: I. Effect on water storage,distribution,and evaporation[J]. Soil Science Society of America Journal,1971,35(4):631-634.
[30] Jiménez C C, Tejedor M, Díaz F, et al. Effectiveness of sand mulch in soil and water conservation in an arid region, Lanzarote,Canary Islands, Spain[J]. Journal of Soil and Water Conservation,2005,60(1):63-67.
备注/Memo
收稿日期:2021-08-21 修回日期:2021-10-10
资助项目:中国科学院战略性先导科技专项子课题“土壤侵蚀定量评价与分区防控对策”(XDA20040202)
第一作者:杨苗苗(1995—),女(回族),甘肃平凉人,硕士研究生,研究方向为区域土壤侵蚀调查与定量评价。E-mail:ymm_miao@163.com
通信作者:杨勤科(1962—),男,陕西陇县人,博士,教授,主要从事区域土壤侵蚀评价和侵蚀地形分析研究。E-mail:qkyang@nwu.edu.cn
张科利(1962—),男,陕西宝鸡人,博士,教授,主要从事土壤与环境、土壤侵蚀及水土保持研究。E-mail:keli@bnu.edu.cn