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Spatiotemporal change of beneficiary area from wind erosion prevention service in the Ulan Buh Desert in 2008 and 2018

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Geography and Sustainability 2022年第2期3卷 119-128页

作者： Wenjie Hu Xiuqin Wu Kebin Zhang School of Soil and Water Conservation Beijing Forestry UniversityBeijing 100083China

The Ulan Buh Desert is one of the eight deserts in China that provides wind erosion prevention service(i.e.,the ecosystem;vegetation,production,and construction activities that promote sand fixation).It is significant for the construction of the national ecological barrier,and the protection of the ecological security in the Yellow River and North *** this study,we selected two representative years(2008 and 2018)and quantified wind erosion prevention service from the Ulan Buh Desert using the RWEQ ***,the HYSPLIT model was used to simulate the spatial flow process from the service supply area to the beneficiary area and to determine its *** specific dust reduction amount in the beneficiary area was then *** energy and the time-space relation of wind erosion prevention service in the areas that receive benefits from Ulan Buh Desert were compared before and after implementing environmental restoration *** results showed that:(1)the total amount of wind erosion prevention in the Ulan Buh Desert in 2018 was 2.12×10^(10)kg,which was 5.17 times higher than that in 2008;(2)in 2018,the distribution density of the flow path of wind erosion prevention service was lower than that in 2008,and the flow paths in each year were concentrated in the beneficiary areas with the path distribution frequency of less than 10%;(3)the total dust reduction in the downwind area of the Ulan Buh Desert in 2018 was higher than that in 2008,totaling 15.54 million *** Mongolia Autonomous Region and Shanxi Province had the most significant amount of dust reduction.

关键词： wind erosion prevention service HYSPLIT model Beneficiary area Dust reduction capacity The Ulan Buh Desert

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Evaluation of Inner Mongolia wind erosion prevention service based on Land Use and the RWEQ Model

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Journal of Resources and Ecology 2022年第5期13卷 763-774页

作者： WANG Yangyang XIAO Yu XU Jie XIE Gaodi QIN Keyu LIU Jingya NIU Yingnan GAN Shuang HUANG Mengdong Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Beijing Forestry University Beijing 100083China

Inner Mongolia is the important ecological barrier zone in northern China,which plays an important role in the prevention and control of wind in the regional *** on the Revised wind erosion Equation(RWEQ)model and the cost-recovery method,this study simulated the wind erosion prevention service(WEPS)in Inner Mongolia in 2010 and 2015,investigated the spatial pattern of material and monetary value of WEPS,and analyzed the differences among various cities and various *** results indicated that the total WEPS of Inner Mongolia was estimated to be 73.87×10^(8) t in 2015,which was 4.61×10^(8) t less than in 2010,while the monetary value of WEPS was calculated to be 738.66×10^(8) yuan in 2015,which was 46.16×10^(8) yuan less than in *** all the leagues and cities,Xilin Gol League supported the highest WEPS,reaching 18.65×10^(8) t in 2015,while Wuhai provided the *** WEPS of Hulunbeier increased the most,by 4.37×10^(8) t from 2010 to *** WEPS in the grassland ecosystem was the highest among the different ecosystems,accounting for more than55%of the total WEPS in Inner Mongolia,but it was reduced by 1.05×10^(8) t during the same *** WEPS in the forest ecosystem increased the most,reaching 0.19×10^(8) *** study found that the implementation of projects such as returning farmland to forests and grasses and sand control effectively increased the WEPS by increasing the forest ***,unsuitable land use increased the desertification of ecosystems which resulted in a reduction of WEPS in Inner Mongolia.

关键词： wind erosion prevention service revised wind erosion equation ecological technology

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