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Using WaTEM/SEDEM to Configure Catchment Soil Conservation Measures for the Black Soil Region, Northeastern China

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  • Haiyan Fang

    (Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
    College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China)

Abstract

In recent years, to combat soil erosion, large-scale soil conservation measures have been implemented in the world. Evaluation of the integrated catchment management is urgently required. In the present study, soil erosion and sediment yield under 24 scenarios were predicted, based on the water and tillage erosion model and sediment delivery deposition model (WaTEM/SEDEM). The current catchment management was not ideal, with a catchment soil loss rate (SLR) of 599.88 t km −2 yr −1 and a sediment yield of 240.00 t km −2 yr −1 . The catchment management with contour tillage on <3° slopes, hedgerow planting on 3–5° slopes, terracing on 5–8° slopes, and forestation on >8° slopes with trenches along the forest and dams in gullies was the best catchment management to control soil loss, with catchment SLR that was less than the tolerable value of 200 t km −2 yr −1 . However, the SLR on the <3° slopes was still higher than the tolerable value. It is not enough to control soil loss by only implementing contour tillage measure on <3° slopes, and other measures should be further implemented on these slopes. In gullies, more measures should be implemented to prevent sediment flowing out of the catchments, in Northeastern China.

Suggested Citation

  • Haiyan Fang, 2021. "Using WaTEM/SEDEM to Configure Catchment Soil Conservation Measures for the Black Soil Region, Northeastern China," Sustainability, MDPI, vol. 13(18), pages 1-13, September.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:18:p:10421-:d:638576
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    References listed on IDEAS

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    1. Janeau, J.-L. & Gillard, L.-C. & Grellier, S. & Jouquet, P. & Le, Thi Phuong Quynh & Luu, Thi Nguyet Minh & Ngo, Quoc Anh & Orange, D. & Pham, Dinh Rinh & Tran, Duc Toan & Tran, Sy Hai & Trinh, Anh Du, 2014. "Soil erosion, dissolved organic carbon and nutrient losses under different land use systems in a small catchment in northern Vietnam," Agricultural Water Management, Elsevier, vol. 146(C), pages 314-323.
    2. Wolka, Kebede & Mulder, Jan & Biazin, Birhanu, 2018. "Effects of soil and water conservation techniques on crop yield, runoff and soil loss in Sub-Saharan Africa: A review," Agricultural Water Management, Elsevier, vol. 207(C), pages 67-79.
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