Effects of Cultivated Land on Wind Erosion of Annual Land Use Change at Lankao County, He'nan Province During 2018-2019
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S157.1

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    Abstract:

    [Objective] The current situation and annual dynamic change of wind erosion on cultivated land in the Yellow River alluvial area of the Huaihe River basin were studied to provide a scientific basis for regional wind erosion research and control.[Methods] Lankao County, He'nan Province, was selected as the research area to interpret the land use information in 2018 and 2019 using high-resolution remote-sensing images. The wind erosion model of cultivated land was used to calculate the modulus of wind erosion, and the effects on wind erosion of cultivated land of annual land-use change were analyzed.[Results] ① In 2018-2019, the major type of land use at Lankao County was irrigated land, and the area of land use change was 21.40 km2. The dynamic degree of irrigated land was -1.54%. The main change in land use was from irrigated land to forest land (7.19 km2). ② The main wind erosion intensity on cultivated land at Lankao City was mild erosion, followed by light erosion. The erosion area was reduced by 17.04 km2, and the dynamic degree was -12.13%. ③ During 2018-2019, the changes in wind erosion on cultivated land at Lankao County were closely related to the changes in the area and spatial location of the irrigated land. The area of erosion reduction caused by the rotation of irrigated land was 3.36 km2, mainly located in Yifeng Township, Chengguan Town and other areas. The area increased by 0.98 km2 due to the transfer of irrigated land, which was mainly located in Yifeng township, Putaojia Town and other areas.[Conclusion] The characteristics of land use and wind erosion on cultivated land in the Yellow River alluvial area of the Huaihe River basin are distinct, and the changes in irrigated land directly affect cultivated land wind erosion. Therefore, more attention should be paid to controlling the wind erosion of cultivated land and using the cultivated land effectively.

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高睿瑜,张芷温,李文龙,李明宇,牛勇,张荣华,张光灿,袁利,张春强.2018-2019年河南省兰考县土地利用变化对耕地风蚀的影响[J].水土保持通报英文版,2021,41(1):112-117,124

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History
  • Received:July 01,2020
  • Revised:October 14,2020
  • Adopted:
  • Online: March 16,2021
  • Published: