[1]ZHANG Lichao,GE Peilin,LI Zhaoxia,et al.Characteristics of Soil Micro-relief of the Red Soil Sloping Farmland Under Rainfall Erosion[J].Research of Soil and Water Conservation,2018,25(06):15-21.
Copy
Characteristics of Soil Micro-relief of the Red Soil Sloping Farmland Under Rainfall Erosion
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
25
Number of periods:
2018 06
Page number:
15-21
Column:
Public date:
2018-10-26
- Title:
- Characteristics of Soil Micro-relief of the Red Soil Sloping Farmland Under Rainfall Erosion
- Keywords:
- soil and water conservation; micro-relief; laser scanning; roughness; red soils
- CLC:
- S157
- DOI:
- -
- Abstract:
- The red soil sloping farmland weathered from Quaternary red clay and shale was selected for the field rainfall simulation tests. At the same soil surface condition, the continuous three rainfall simulations were conducted under two rainfall intensities. The soil surface micro-relief characteristics such as soil roughness and depression storage capacity were analyzed by the mm-level high-precision laser scanning and computer digital image processing method. The results show that: (1) the soil surface roughness decreases due to the combined effects of the rainfall detachment and runoff transportation with the rainfall processing; the soil surface roughness decreases sharply during the first rainfall event at the intensity of 1 mm/min, the effects of the following two rainfall events are much slighter; under the rainfall intensity of 2 mm/min, the soil surface roughness increases moderately during the second and third rainfall events on all the three sloping farmlands; soil sealing tends to reduce the roughness, and rills tend to increase roughness, changes in surface roughness depend on the balance between the two factors; the changes of the roughness in different slope positions are different during continuous rainfall; for the upslope, roughness decreases most, for the midslope, roughness decreases in a certain degree, and the roughness of downslope decreased less; (2) the changes of depression storage capacity are similar to roughness that decreases during continuous rainfall events, especially for the first rainfall; the differences of the depression storage capacity of the tested three sloping farmland are demonstrated by the stability of aggregates and soil crusts; (3) linear correlation is found between depression storage capacity and soil surface roughness, and higher relationship coefficient is found under lower rainfall intensity of 1 mm/min. The results of this study may throw a light on the soil and water conservation of sloping farmlands in southern red soil region in the future.
- References:
-
[1] 中国大百科全书(水利卷)[M].北京:中国大百科全书出版社,1983.
[2] 李运学,邓吉华,黄建胜.水土流失是我国的头号环境问题[J].水土保持学报,2002,16(5):105-107.
[3] 赵其国.中国东部红壤地区土壤退化的时空变化、机理及调控[M].北京:科学出版社,2002.
[4] Morgan R P C. Soil Erosion and Conservation[M]. Addison-Wesley Longman, Edinburgh, 1995.
[5] Morgan R P, Quinton C J N, Smith R E, et al. The European soil erosion model(EUROSEM):A dynamic approach for predicting sediment transport from fields and small catchments[J]. Earth Surf Processes Landforms, 1998,23:527-544.
[6] Cogo N P, Moldenhaver W C, Foster G R. Effect of crop residue, tillage-induced roughness and runoff velocity on size distribution of eroded soil aggregates[J]. Soil Sci. Soc. Am. J.,1983,47:1005-1008.
[7] Cogo N P, Moldenhauer W C, Foster G R. Soil loss reductions from conservation tillage practices[J]. Soil Science Society of America Journal, 1984,48:368-373.
[8] Linden D R, Van Doren D M, Allmaras R R. A model of the effects of tillage-induced soil surface roughness on erosion[C]//ISTRO, 11th Int Conf:Tillage and Traffic in Crop Production, Haren, The Netherlands:International Soil Tillage Research Organization, 1988.
[9] Fox D M, Le Bissonnais Y, Bruand A. The effect of ponding depth on infiltration in a crusted surface depression[J]. Catena, 1998,32:87-100.
[10] 唐克丽.中国水土保持[M].北京:科学出版社,2004.
[11] 罗键,郑子成,李廷轩,等.横垄坡面地表微地形多重分形特征及其对侵蚀产沙的影响[J].水土保持学报,2015,29(4):66-72.
[12] 王鹏飞,郑子成,张锡洲.玉米苗期横垄坡面地表糙度的变化及其对细沟侵蚀的影响[J].水土保持学报,2015,29(2):30-34.
[13] 秦凤,郑子成,李廷轩,等.玉米季坡耕地地表糙度的变化特征及其对土壤侵蚀的影响[J].水土保持学报,2013,27(3):18-22.
[14] 贾莲莲,李占斌,李鹏,等.降雨过程对地表糙度的影响[J].水土保持学报,2009,23(5):30-33.
[15] 张利超,杨伟,李朝霞,等.激光微地貌扫描仪测定侵蚀过程中地表糙度[J].农业工程学报,2014,30(22):155-162.
[16] Luk S H, Abrahams A D, Parsons A J. A simple rainfall simulator and trickle system for hydro-geomorphic experiments[J]. Phys. Geogr., 1986,7(4):344-356.
[17] Darboux F, Davy, Gascuel-Odoux C, et al. Evolution of soil surface roughness and flowpath connectivity in overland flow experiments[J]. Caneta, 2001,46(3):125-139.
[18] Darboux F, Huang C. Does soil surface roughness increase or decrease water and particle transfers[J]. Soil Science Society of America Journal, 2005,69:748-756.
[19] 赵军,雷廷武,张晴雯,等.激光微地貌扫描仪的开发研制及在坡面侵蚀研究应用初步[J].山东农业大学学报,2001,32(2):201-206.
[20] 李志林,朱庆.数字高程模型[M].武汉:武汉大学出版社,2003.
[21] Helming K, Roth C H, Wolf R, et al. Characterization of rainfall-microrelief interactions with runoff using parameters derived from digital elevation models(DEMs)[J]. Soil Technology, 1993,6:273-286.
[22] Helming K, Römkens M J M, Prasad S N, et al. Erosional development of small scale drainage networks[J]. Process Modelling and Landform Evolution, 1999,78:123-145.
[23] Römkens M J M, Helming K, Prasad S N. Soil erosion under different rainfall intensities, surface roughness, and soil water regimes[J]. Catena, 2001,46:103-123.
[24] Rudolph A, Helming K, Diestel H. Effect of antecedent soil water content and rainfall regime on microrelief changes[J]. Soil Technology, 1997,10:69-81.
[25] Jenson S K, Domingue J O. Extracting topographic structure from digital elevation data for geographic information system analysis[J]. Photogrammetric Engineering and Remote Sensing, 1988,54(11):1593-1600.
- Similar References:
Memo
-
Last Update:
1900-01-01