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| Green Great Wall | |
|---|---|
| Name | Green Great Wall |
| Location | China, Africa, Inner Mongolia, Shaanxi, Ningxia |
| Start date | 1978 |
| Established | 1978 |
| Governing body | Chinese Academy of Sciences, Ministry of Ecology and Environment (China), United Nations Environment Programme |
| Status | ongoing |
Green Great Wall The Green Great Wall is a large-scale afforestation and land restoration initiative initiated to combat desertification, soil erosion, and dust storms across arid regions such as Inner Mongolia, Gansu, Ningxia, Shaanxi, and parts of Hebei and Liaoning. The project involves state agencies like the Chinese Academy of Sciences and international bodies such as the United Nations Convention to Combat Desertification and the World Bank in coordination with provincial authorities like Inner Mongolia Autonomous Region and Shaanxi Province. It has attracted attention from environmental researchers at institutions like Peking University, Tsinghua University, Chinese Academy of Agricultural Sciences, and international scholars affiliated with University of Oxford and Columbia University.
The initiative aims to establish belts of trees, shrubs, and grasses along historical boundaries between arid and agricultural zones including the Loess Plateau, Yellow River basin, and the fringes of the Gobi Desert. Core partners include the Ministry of Agriculture and Rural Affairs (China), State Forestry and Grassland Administration, provincial forestry bureaus, and international funders such as the Global Environment Facility. Scientific input has come from projects at Chinese Academy of Sciences, International Center for Agricultural Research in the Dry Areas, and field trials at Institute of Soil and Water Conservation.
Early experiments began in the 1970s after major 1970s China floods and recurrent dust bowl events motivated national programs like the Three-North Shelter Forest Program and later expansions. The program evolved through policy milestones including directives from the State Council of the People's Republic of China and planning documents by the National Development and Reform Commission. Major phases intersected with ecological campaigns such as the Grain for Green program and international initiatives like the United Nations Convention to Combat Desertification conferences. Research collaborations involved Chinese Academy of Agricultural Sciences, Beijing Forestry University, and multinational teams from United States Department of Agriculture researchers.
Primary objectives include stabilizing shifting dunes near the Yellow River and Yangtze River catchments, reducing transboundary dust storm frequency that affects cities like Beijing, Seoul, Tokyo, and Ulaanbaatar, and restoring degraded lands on the Loess Plateau. The scope spans ecological restoration, carbon sequestration benchmarks relevant to commitments under the Paris Agreement, rural livelihood support linked to provincial poverty alleviation programs, and protection of infrastructure corridors such as the Beijing–Shanghai Railway and highways connecting Xinjiang to eastern provinces.
Implementation has combined large-scale afforestation, windbreak planting along transportation corridors like the G30 Lianyungang–Khorgas Expressway, contour terracing on slopes of the Loess Plateau, and use of species trials at nurseries affiliated with Beijing Forestry University and Chinese Academy of Sciences. Techniques include pit planting, drip irrigation from Yellow River diversions, sand-binding with shrubs such as Salix matsudana and Artemisia ordosica tested by researchers at Northwest A&F University, and engineering measures inspired by practices in Israel and the Sahel programs led by the African Union and Food and Agriculture Organization. Implementation relied on labor mobilization comparable to projects overseen by the State Council of the People's Republic of China and used policy tools such as subsidies, land retirement schemes modeled after Grain for Green, and monitoring through satellite programs like Landsat and MODIS.
Reported environmental impacts include increases in vegetation cover documented by analysts at Chinese Academy of Sciences, localized increases in soil organic carbon measured by teams from Tsinghua University, and reductions in sandstorm frequency reported by the China Meteorological Administration. Socioeconomic effects influenced rural employment patterns in counties across Inner Mongolia Autonomous Region and Shaanxi Province, with ties to income changes tracked in studies from Peking University and Renmin University of China. Critics and proponents cite carbon sequestration estimates relevant to Intergovernmental Panel on Climate Change methodologies, and links to biodiversity outcomes examined by researchers at Zoological Society of London and Royal Society for the Protection of Birds collaborators.
Controversies involve species selection criticized by ecologists from Chinese Academy of Sciences and academics at Peking University for favoring monocultures such as Haloxylon ammodendron that may lower groundwater levels affecting Yellow River tributaries; debates echo findings from researchers at University of Cambridge and National University of Singapore. Policy scholars from Harvard University and Brookings Institution have raised governance concerns over land tenure impacts on herding communities in Inner Mongolia and Xinjiang, and legal scholars citing provincial regulations have discussed compensation frameworks. Conservation organizations like Greenpeace and World Wildlife Fund have called for adaptive management and native species prioritization.
Monitoring combines remote sensing by agencies using Landsat, Sentinel-2, and MODIS products analyzed by teams at Chinese Academy of Sciences and international groups at NASA and European Space Agency. Field verification occurs at long-term plots managed by Institute of Soil and Water Conservation and experimental stations at Northwest A&F University. Results show heterogeneous outcomes: some counties report restored arable margins and reduced dust emissions documented in journals like Nature and Science Advances, while other studies published via Proceedings of the National Academy of Sciences and Environmental Research Letters indicate trade-offs in water use and biodiversity. Ongoing evaluation involves multilateral stakeholders such as the United Nations Environment Programme and research networks at CERN-unrelated environmental institutes for cross-disciplinary synthesis.
Category:Afforestation projects