Dynamic Erosion and Sediment Yield Model Analysis in a Typical Watershed of Hilly and Gully Region, Chinese Loess Plateau | Chapter 7 | Novel Perspectives of Geography, Environment and Earth Sciences Vol. 4

 The Purpose concerning this study are to (i) cultivate and update a annually distributed model of area for water draining erosion and debris yield and (ii) assess spatiotemporal changes in deterioration and sediment yield in the Majiagou River area for water draining before and after projects to return farmland. In addition to debasing soil fertility and raw materials, soil erosion still contributes to the sedimentation of waterway channels. A distributed-active model of sediment yield established the Chinese Soil Loss equation (CSLE) was grown and modified to judge the effects of hydrological determinants and human activities on deterioration and sediment yield middle from two points 1995 and 2013. This was done in order to uncover the spatiotemporal evolution of deterioration and sediment yield before and after retracing farmland in a conventional watershed of a mountainous and gully domain (Chinese Loess Plateau). Results could offer a hard scientific base for the management of watersheds, land use preparation, and multi-scale dynamic displaying of erosion and powder yield. The modified model has traits of simple treasure, high veracity, wide feasibility and easy expansion, and maybe applied to call erosion and silt yield in the study area, 2) soil deterioration gradations are closely had connection with the spatial dispersion of rainfall erosiveness and land use patterns, the current soil and water conservation measures are not adept for high precipitation intensities, 3) the average sediment yield rate before and following in position or time model modification in current 5 years (apart from 2013) is 4574.62 Mg/km2 and 1696.1 Mg/km2, respectively, diminishing by about 35.4% and 78.2% when compared to the early governance (1995-1998). However, the earlier-in-a-century storm in July 2013 is the key determinant in the highest likely sediment yield. The undulating and gully domain of the Chinese Loess Plateau may benefit from the results as an persuasive and scientific base for planning the preservation of soil and water and ecological construction.

Author(s) Details:

Lei Wu,
Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education, Northwest A&F University, Yangling, 712100, P.R. China, State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, 712100, P.R. China and College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, 712100, P.R. China.

Xia Liu,
Construction Department, Northwest A&F University, Yangling, 712100, P.R. China.

Xiaoyi Ma,
Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education, Northwest A&F University, Yangling, 712100, P.R. China and College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, 712100, P.R. China.

Please see the link here: https://stm.bookpi.org/NPGEES-V4/article/view/9646