Effects of Sloping Contour Earth Bund on Soil Erosion, Moisture, Temperature, and Respiration in Black Soil Area of Northeast China

Zhang Yu; XU Ziqi; Yang Xiankun; Cui Bin

doi:10.13961/j.cnki.stbctb.2020.05.024

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Effects of Sloping Contour Earth Bund on Soil Erosion, Moisture, Temperature, and Respiration in Black Soil Area of Northeast China

- Effects of Sloping Contour Earth Bund on Soil Erosion, Moisture, Temperature, and Respiration in Black Soil Area of Northeast China
- Bulletin of Soiland Water Conservation Vol. 40, Issue 5, Pages: 160-165(2020)
- 作者机构：
  
  吉林省水土保持科学研究院,吉林,长春,130033
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2020.05.024
  CLC： S157.3
- Published：2020
- 稿件说明：
移动端阅览
Zhang Yu, XU Ziqi, Yang Xiankun, et al. Effects of Sloping Contour Earth Bund on Soil Erosion, Moisture, Temperature, and Respiration in Black Soil Area of Northeast China[J]. Bulletin of Soiland Water Conservation, 2020, 40(5): 160-165.
DOI：

Zhang Yu, XU Ziqi, Yang Xiankun, et al. Effects of Sloping Contour Earth Bund on Soil Erosion, Moisture, Temperature, and Respiration in Black Soil Area of Northeast China[J]. Bulletin of Soiland Water Conservation, 2020, 40(5): 160-165. DOI： 10.13961/j.cnki.stbctb.2020.05.024.

摘要

[目的

]

探索坡式条田在黑土区坡耕地水土保持和改善土壤环境中的作用，以期为坡式条田在坡耕地上的利用提供理论支持。[方法

]

基于野外试验，观测研究了坡式条田对径流产沙、土壤水热和土壤呼吸的影响。[结果

]

①黑土坡面设置坡式条田具有良好的减流减沙效果，年均减少输沙率和减少地表径流率分别为78.3%和68.5%，土壤侵蚀模数为87.53 t/（km

·a），控制在允许范围内；②修筑坡式条田显著提高土壤质量含水量（p

0.05），并能显著增加植被覆盖度（p

0.01）；③研究区土壤呼吸与土壤温度显著相关，修筑坡式条田能够显著降低土壤呼吸速率，降低土壤碳素损失。[结论

]

黑土区坡式条田能够很好地防治水土流失，改善土壤水热和植被状况，且能降低土壤呼吸造成的C素流失，应在黑土坡耕地上推广应用。

Abstract

[Objective] The function of sloping contour earth bunds with respect to soil and water conservation and environmental enhancement on sloping farmland in a black soil area was investigated in order to provide theoretical support for the use of sloping contour earth bunds on sloping farmland.[Methods] Field experiments were carried out to observe the effects of a sloping contour earth bund on soil erosion

the soil water content

soil temperature

and soil respiration.[Results] ① The sloping contour earth bund had a remarkable effect on reducing the amount of soil erosion in the black soil area; the amount of erosion was 87.53 t/(km2·a)

which was less than the allowable amount of erosion. ② Construction of the sloping contour earth bund significantly increased the soil water content (p<0.05) and the vegetation coverage ratio (p<0.01). ③ The soil respiration and soil temperature were significantly correlated in the research area

and the sloping contour earth bund clearly reduced the soil respiration rate and soil carbon loss.[Conclusion] The sloping contour earth bund exhibited remarkable effects for reducing soil erosion

improving the soil water content and temperature conditions

and reducing the soil respiration rate and soil carbon loss; hence

it is suitable for sloping farmland in the black soil area.

关键词

Keywords

references

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