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Ecosystem Water Use Efficiency in the Three-North Region of China Based on Long-Term Satellite Data

Author

Listed:
  • Qi’ao Zhang

    (School of Landscape Architecture, Beijing Forestry University, Beijing 100083, China)

  • Wei Chen

    (College of Geoscience and Surveying Engineering, China University of Mining & Technology, Beijing 100083, China)

Abstract

Water use efficiency (WUE), given by the ratio between organic matter production and water consumption, could be considered as a very important ecological indicator for assessing vegetation system growth conditions by combining organic matter production and water consumption. It is especially important for regional vegetation sustainable management by creating enough organic matter with restricted water supply. Furthermore, proper analysis of WUE is vital for the evaluation and future plans of ecological restoration projects in ecologically fragile regions such as the Three-North region of China. In this study, ecosystem WUE across the Three-North region of China from 2001 to 2017 was obtained, and the variation trends and major influencing factors were also analyzed. The results demonstrated that (1) the average WUE across the Three-North region of China is 0.7376 g∙C∙m −2 ∙mm −1 with an annual increase of 0.002 g∙C∙m −2 ∙mm −1 ∙y −1 ; (2) the spatiotemporal variation trends of WUE are similar to those of gross primary production (GPP); and (3) in the southeastern parts of the Three-North region, the vegetation conditions are better with sustainable improvements, while in Xinjiang Province, the sustainable degradation areas are widely spread. The results of this research reveal large spatial heterogeneity of WUE, with high WUE mainly in the southeastern region with sufficient precipitation and afforestation programs. For those areas far away from this region, WUE is not satisfactory, suggesting that, for a sustainable vegetation growth, it is important to consider the water supply to maintain suitable vegetation cover. Furthermore, the results of this research are important for future ecological restoration and sustainable management of environment.

Suggested Citation

  • Qi’ao Zhang & Wei Chen, 2021. "Ecosystem Water Use Efficiency in the Three-North Region of China Based on Long-Term Satellite Data," Sustainability, MDPI, vol. 13(14), pages 1-17, July.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:14:p:7977-:d:595842
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    References listed on IDEAS

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    1. Fayyaz Ahmad & Muhammad Umar Draz & Lijuan Su & Ilhan Ozturk & Abdul Rauf, 2018. "Tourism and Environmental Pollution: Evidence from the One Belt One Road Provinces of Western China," Sustainability, MDPI, vol. 10(10), pages 1-22, September.
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    Cited by:

    1. Fei Chen & Ningbo Cui & Yaowei Huang & Xiaotao Hu & Daozhi Gong & Yaosheng Wang & Min Lv & Shouzheng Jiang, 2021. "Investigating the Patterns and Controls of Ecosystem Light Use Efficiency with the Data from the Global Farmland Fluxdata Network," Sustainability, MDPI, vol. 13(22), pages 1-19, November.
    2. Fei Tuo & Beibei Gao & Zhibao Dong, 2021. "Technological Breakthrough for the Afforestation of Populus euphratica in the Mu Us Desert in China," Sustainability, MDPI, vol. 13(24), pages 1-10, December.

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