PDF Download

[1]LI Fucheng,JIANG Rentao,HUA Xiaoye.Effect of Contour Plowing Orientation on Soil Redistribution on Hillslope in Purple Soil[J].Research of Soil and Water Conservation,2016,23(03):106-111.

Copy

Effect of Contour Plowing Orientation on Soil Redistribution on Hillslope in Purple Soil

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 03 Page number: 106-111 Column: Public date: 2016-06-28

Title:: Effect of Contour Plowing Orientation on Soil Redistribution on Hillslope in Purple Soil

Author(s):: LI Fucheng, JIANG Rentao, HUA Xiaoye; College of Resources & Environment, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China

Keywords:: tillage erosion; contour tillage; magnetic tracer; tillage translocation; soil degradation

CLC:: S157.1

DOI:: -

Abstract:: A hillslope with a length of 15 m and a slope gradient of 14.16% was selected as the experimental site in the hilly areas of the Sichuan Basin, China. The magnetic tracer method was used to determine the rates and patterns of soil redistribution for downward contour plowing (i.e., downslope turning the soil) and upward contour plowing (i.e., upslope turning the soil), respectively. Consecutive tillage by ox-drawn ploughing was performed 15 times for downward contour plowing and upward contour plowing, respectively, to simulate the impact of long-term tillage on soil profile transformation and microtopography evolution at different slope positions. The results showed that downward contour plowing caused only downslope soil translocation. Soil translocation rates ranged from 15.62 to 28.70 kg/m and no significant correlation was found between soil translocation rates and slope gradient for downward contour plowing (p=0.93). For upward contour plowing, the soil extended to both sides of plough blade, i.e. the soil moved both upslope and downslope simultaneously. Net downslope translocation rates ranged from -10.91 to 8.23 kg/m. Soil translocation rates were significantly correlated with slope gradients for upward contour plowing (p < 0.001), and net displacement direction turned from uphill to downhill when slope gradient increased to 14% under this study condition. The eroded depth of soil profile at the summit position after 15 times downward contour plowing was 132% more than its original depth of pre-tillage soil profile, and the depth of post-tillage soil profile was equal to tillage depth, indicating that the downward contour plowing plays a dual roles: enhancing soil erosion and accelerating pedogenic processes when the depth of soil profile was less than tillage depth. For upward contour plowing, the depth of post-tillage soil profile at the summit position increased by 12.7%, indicating that it plays an important role in protecting soil profile. Upward contour plowing could be an effective protective measure in reducing tillage erosion and preventing soil from degradation on the sloping land in such as purple soil with thin soil over bedrock.

References:: [1] 王礼先,张有实,李锐,等.关于我国水土保持科学技术的重点研究领域[J].中国水土保持科学,2005,3(1):1-6.
[2] 王占礼,邵明安,雷廷武.黄土区耕作侵蚀及其对总土壤侵蚀贡献的空间格局[J].生态学报,2004,23(7):1328-1335.
[3] Zhang J H, Lobb D A, Li Y, et al. Assessment for tillage translocation and tillage erosion by hoeing on the steep land in hilly areas of Sichuan, China[J]. Soil & Tillage Research,2004,75(2):99-107.
[4] 聂小军,徐小涛.耕作侵蚀对农田坡地景观影响的研究进展[J].水土保持研究,2010,17(5):254-260.
[5] Zhang J H, Nie X J, Su Z A. Soil profile properties in relation to soil redistribution by intense tillage on a steep hillslope[J]. Soil Science Society of America Journal,2008,72(6):1767-1773.
[6] Li F C, Zhang J H, Su Z A, et al. Simulation and ¹³⁷Cs tracer show tillage erosion translocating soil organic carbon, phosphorus, and potassium[J]. Journal of Plant Nutrition and Soil Science,2013,176(5):647-654.
[7] 朱波,况福虹,高美荣,等.土层厚度对紫色土坡地生产力的影响[J].山地学报,2009,27(6):735-739.
[8] 尚河英,尹忠东,张鹏.川中不同类型小流域土壤侵蚀特征分析[J].水土保持研究,2015,22(5):5-8.
[9] 李富程,花小叶,赵丽,等.紫色土坡地犁耕方向对耕作侵蚀的影响[J].水土保持学报,2015,29(6):35-40.
[10] Wildemeerscha J C J, Vermanga J, Cornelisa W M, et al. Tillage erosion and controlling factors in traditional farming systems in Pinar del Río, Cuba[J]. Catena,2014,121(10):344-353.
[11] Zhang J H, Frielinghaus M, Tian G, et al. Ridge and contour tillage effects on soil erosion from steep hillslopes in the Sichuan Basin, China[J]. Journal of Soil and water Conservation,2004,59(6):277-283.
[12] Dercon G, Govers G, Poesen J, et al. Animal-powered tillage erosion assessment in the southern Andes region of Ecuador[J]. Geomorphology,2007,87(1/2):4-15.
[13] Li Y, Tian G, Lindstrom M J, et al. Variation of surface soil quality parameters by intense-donkey-drawn tillage on steep slope[J]. Soil Science Society of America Journal,2004,68(3):907-913.
[14] Lobb D A, Kachanoski R G, Miller M H. Tillage translocation and tillage erosion on shoulder slope landscape positions measured using ¹³⁷Cs as a tracer[J]. Canadian Journal of Soil Science,1995,75(2):211-218.
[15] Su Z A, Zhang J H, Qin F C, et al. Landform change due to soil redistribution by intense tillage based on high-resolution DEMs[J]. Geomorphology,2012,175(6):190-198.
[16] Zhang J H, Li F C. Soil redistribution and organic carbon accumulation under long-term (29 years)upslope tillage systems[J]. Soil Use and Management,2013,29(3):365-373.
[17] 刘刚才,李兰,周忠浩,等.紫色土容许侵蚀量的定位试验确定[J].水土保持通报,2008,28(6):90-94.
[18] Dercon D, Gover G, Posen J, et al. Animal-powered tillage erosion assessment in the southern Andes region of Ecuador[J]. Geomorphology,2007,87(1/2):4-15.
[19] Turkelboom F, Poesen J, Ohler I, et al. Reassessment of tillage erosion rates by manual tillage on steep slopes in northern Thailand[J]. Soil & Tillage Research,1999,51(3/4):245-259.
[20] Zhang J H, Su Z A, Nie X J. An investigation of soil translocation and erosion by conservation hoeing tillage on steep lands using a magnetic tracer[J]. Soil & Tillage Research,2009,105(2):177-183.

Similar References:

Memo

Last Update: 1900-01-01