Distribution Characteristics and Control Countermeasures of Soil and Water Loss in Ten Kongduis of Yellow River

Abstract

[Objective] The area, intensity and dynamic changes of soil and water loss in the Ten Tongduis of the Yellow River were analyzed in order to provide a reference for the comprehensive management of the basin. [Methods] Based on the national remote sensing survey results of soil erosion and the national dynamic monitoring results of soil and water loss, the distribution and dynamic changes of soil and water loss in the basin were compared and analyzed. [Results] The vegetation area accounted for 63.97% of the Ten Kongduis of the Yellow River basin, mainly with medium-low and low vegetation coverage accounting for 48.85% and 36.54% of the vegetation coverage area respectively. The area of soil and water loss was 4 374.98 km2, accounting for 40.63% of the basin area in 2021. Compared with 2021, soil and water loss were lower in 2020, 1999, and 1985 by 46.32, 3 664.50, and 4 958.03 km2, respectively. Soil and water loss were mainly located in grassland, forest land, arable land and other land, accounting for 96.69% of the total area of soil and water loss. [Conclusion] The Ten Kongduis are still a difficult area to control soil erosion in the Yellow River basin. The reduction of high intensity erosion is related to the failure to consider channel erosion in annual monitoring results. This area should adhere to the comprehensive management strategy of “vegetation construction based on Hippophae rhamnoides planting, engineering layout focusing on the construction of silting dam, sand control policy based on the premise of border locking and sand fixation, and vigorously promote the pilot project of sand containment and water exchange”.

Keywords

• the ten kongduis
• soil and water loss
• dynamic change
• soil and water loss control
• gully erosion