水土保持通报2024，Vol.44Issue(1)：172-180,192,10.DOI:10.13961/j.cnki.stbctb.2024.01.018
甘肃省武威市风力侵蚀分区治理规划及措施
Regionalization and Prevention Countermeasures for Wind Erosion in Wuwei City of Gansu Province
摘要
Abstract
[Objective]The characteristics of the spatial dynamics of wind erosion at Wuwei City,Gansu Province and the controlled area of wind erosion and its prevention countermeasures were determined in order to provide scientific references for implementing measures to prevent wind erosion,conserve soil and water,and use ecological environmental construction practices in the city.[Methods]Multi-source geographic information data,applied remote sensing,a geographic information system(ArcGIS),and other technical means were used with the revised wind erosion equation(RWEQ)to calculate the five-period wind erosion modulus of Wuwei City from 2000 to 2020 to obtain the distribution of the regional wind erosion area,change characteristics,etc.These results were combined with a superposition analysis of spatial elements(such as the distribution of key construction projects)to put forward the principles of the city's wind erosion manageable area delineation and to apply them to delineate the manageable area of wind erosion at Wuwei City.[Results]RWEQ was able to estimate the multi-year wind erosion modulus at Wuwei City[5 788.98 t/(km2·yr)],with a multi-year average soil wind erosion of 1.92×108 t.The model exhibited an overall decreasing and occasionally increasing trend over time,and the wind erosion intensity level was obviously weakened.Wind erosion intensity exhibited obvious spatial heterogeneity that was mainly located in Minqin County,Liangzhou District,and Gulang County.According to the multi-element superimposed wind erosion zoning management program,Wuwei City can manage a total of 2 872.66 km2 of wind erosion area,of which 1 468.48 km2 was at Minqin County,708.75 km2 was at Liangzhou District,and 695.43 km2 was at Gulang County.[Conclusion]Wind erosion sub-area management should be the focus of wind erosion prevention and soil and water conservation in Wuwei City.According to the results of the wind erosion sub-area management division,for different administrative divisions,the flat Gobi desert area with low slope in the northern part of Minqin County is the key area of regional concern.Management measures should be based on the prevention of wind and sand erosion and the restoration of vegetation cover,and attention should be given to controlling the impact of man-made engineering and construction disturbances to make clear the scope of the regional management.Liangzhou District should focus on using a combination of engineering measures and biological measures,combined with governmental management.Gulang County should focus on closure measures and protecting natural vegetation.At the same time,special attention in the Gobi desert area should be given to the implementation of wind and sand erosion prevention and ecological restoration measures for construction activities such as large-scale photovoltaic power plants.关键词
风力侵蚀/修正土壤风蚀方程模型/甘肃省武威市/风蚀水土保持区划Key words
wind erosion/revised wind erosion equation model/Wuwei City of Gansu Province/prevention countermeasure分类
农业科技引用本文复制引用
靳峰,邢瑜,周颖,张煜,马涛,霍云云,郭建军,柳本立..甘肃省武威市风力侵蚀分区治理规划及措施[J].水土保持通报,2024,44(1):172-180,192,10.基金项目
甘肃省水利厅科技项目"河西地区(武威市、嘉峪关市)水土保持精准治理布局与对策研究" （武威市、嘉峪关市）
甘肃省水利科学试验研究及技术推广项目(23GSLK006) （23GSLK006）
