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Ejin Oasis Land Use and Vegetation Change between 2000 and 2011: The Role of the Ecological Water Diversion Project

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  • Xiaoli Hu

    (Key Laboratory of Remote Sensing of Gansu Province, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, No. 320 Donggang West Road, Lanzhou 730000, Gansu, China
    University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China)

  • Ling Lu

    (Key Laboratory of Remote Sensing of Gansu Province, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, No. 320 Donggang West Road, Lanzhou 730000, Gansu, China)

  • Xin Li

    (Key Laboratory of Remote Sensing of Gansu Province, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, No. 320 Donggang West Road, Lanzhou 730000, Gansu, China
    CAS Center for Excellence in Tibetan Plateau Earth Sciences, No. 16 Lincui Road, Chaoyang District, Beijing 100101, China)

  • Jianhua Wang

    (Key Laboratory of Remote Sensing of Gansu Province, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, No. 320 Donggang West Road, Lanzhou 730000, Gansu, China)

  • Xuegang Lu

    (Heihe River Bureau, No. 458 Qingyang Road, Lanzhou 730030, Gansu, China)

Abstract

Ejin Oasis, located in the lower reaches of the Heihe River Basin (HRB), has experienced severe ecosystem decline between the 1960s and 1990s. In response, the Chinese Government implemented the Ecological Water Diversion Project (EWDP) in 2000. To evaluate the effects of the EWDP, this study monitored changes in land use and vegetation in the Ejin Oasis since 2000 and examined driving factors behind such changes. Results demonstrated that the Ejin Oasis ecosystem generally improved between 2000 and 2011. Water body area significantly increased. Lake area of once dried-up Sogo Nuur increased to 45 km 2 . Accordingly, vegetation cover restoration has also significantly increased. For example, the Seasonally Integrated Normalized Difference Vegetation Index (SINDVI) has shown that 31.18% of the entire study area experienced an increase in vegetation area. On the other hand, even though the EWDP has been successful in driving vegetation recovery and lake restoration, farmland reclamation has counteracted such restoration initiatives. Farmland area almost doubled between 2000 and 2011. Thus, farmland expansion management is necessary for the full restoration of the Ejin Oasis ecosystems as well as HRB sustainable development. The results of this study can provide a reference for the management of the HRB.

Suggested Citation

  • Xiaoli Hu & Ling Lu & Xin Li & Jianhua Wang & Xuegang Lu, 2015. "Ejin Oasis Land Use and Vegetation Change between 2000 and 2011: The Role of the Ecological Water Diversion Project," Energies, MDPI, vol. 8(7), pages 1-18, July.
    • Handle: RePEc:gam:jeners:v:8:y:2015:i:7:p:7040-7057:d:52472
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    References listed on IDEAS

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    1. Pereira, Luis Santos & Oweis, Theib & Zairi, Abdelaziz, 2002. "Irrigation management under water scarcity," Agricultural Water Management, Elsevier, vol. 57(3), pages 175-206, December.
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    1. Ewa Osuch & Andrzej Osuch & Piotr Rybacki & Andrzej Przybylak, 2020. "Analysis of the Theoretical Performance of the Wind-Driven Pulverizing Aerator in the Conditions of Góreckie Lake—Maximum Wind Speed Method," Energies, MDPI, vol. 13(2), pages 1-12, January.
    2. Haiming Yan & Jinyan Zhan & Feng Wu & Huicai Yang, 2016. "Effects of Climate Change and LUCC on Terrestrial Biomass in the Lower Heihe River Basin during 2001–2010," Energies, MDPI, vol. 9(4), pages 1-18, April.
    3. Haibo Wang & Mingguo Ma, 2016. "Impacts of Climate Change and Anthropogenic Activities on the Ecological Restoration of Wetlands in the Arid Regions of China," Energies, MDPI, vol. 9(3), pages 1-25, March.
    4. Xueyi Yu & Chi Mu & Dongdong Zhang, 2020. "Assessment of Land Reclamation Benefits in Mining Areas Using Fuzzy Comprehensive Evaluation," Sustainability, MDPI, vol. 12(5), pages 1-20, March.

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