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Soil Erosion Reduction by Grain for Green Project in Desertification Areas of Northern China

by 1,2, 1,3,4 and 1,3,4,*
1
Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China
2
Liaoning Academy of Forestry, Shenyang 110032, China
3
Key Laboratory of Forest Ecology and Environment of National Forestry and Grassland Administration, Beijing 100091, China
4
Dagangshan National Key Field Observation and Research Station for Forest Ecosystem, Xinyu 338033, China
*
Author to whom correspondence should be addressed.
Forests 2020, 11(4), 473; https://doi.org/10.3390/f11040473
Received: 14 March 2020 / Revised: 8 April 2020 / Accepted: 20 April 2020 / Published: 22 April 2020
(This article belongs to the Section Forest Ecology and Management)
The Grain for Green Project (GGP) encompasses most desertification areas in northern China where fragile soils are susceptible to erosion given the arid and semi-arid climate, low vegetation cover, and strong winds. We collected relevant data through ecological surveys and literature review to quantify total sand fixation and dust retention in 2015 based on different restoration methods, forest types, ecological function zones, and key desertification areas. Our results showed that cropland and wasteland afforestation increased sand fixation and dust retention, whereas facilitate afforestation was less effective in doing so. Further, sand fixation and dust retention values were higher in ecological and shrub forests compared with economic forests, as well as in wind erosion zones compared with wind-water erosion and water erosion zones. Moreover, 43.28% and 44.75% of total sand fixation and dust retention, respectively, were concentrated in important windbreak and sand fixation areas. Similarly, 60% and 30% of total sand fixation and dust retention, respectively, occurred in sandstorm paths and sources. Lastly, policy factors primarily influenced the spatial distribution patterns of both sand fixation and dust retention. Based on these results, enhancement of GGP efficacy into the future will rely on increased restoration efforts specifically aimed at planting more drought-resistant shrubs and native vegetation as doing so will enhance sand fixation, dust retention, and thus, the ecological integrity of these valuable and fragile desert ecosystems in northern China. View Full-Text
Keywords: sand fixation; dust retention; Grain for Green Project; vegetation restoration; desertification areas sand fixation; dust retention; Grain for Green Project; vegetation restoration; desertification areas
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MDPI and ACS Style

Wei, W.; Wang, B.; Niu, X. Soil Erosion Reduction by Grain for Green Project in Desertification Areas of Northern China. Forests 2020, 11, 473. https://doi.org/10.3390/f11040473

AMA Style

Wei W, Wang B, Niu X. Soil Erosion Reduction by Grain for Green Project in Desertification Areas of Northern China. Forests. 2020; 11(4):473. https://doi.org/10.3390/f11040473

Chicago/Turabian Style

Wei, Wenjun, Bing Wang, and Xiang Niu. 2020. "Soil Erosion Reduction by Grain for Green Project in Desertification Areas of Northern China" Forests 11, no. 4: 473. https://doi.org/10.3390/f11040473

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