Have Changes to Unused Land in China Improved or Exacerbated Its Environmental Quality in the Past Three Decades?

Ling Yi, Zengxiang Zhang, Xiaoli Zhao, Bin Liu, Xiao Wang, Qingke Wen, Lijun Zuo, Fang Liu, Jingyong Xu and Shunguang Hu
Additional contact information
Ling Yi: Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China
Zengxiang Zhang: Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China
Xiaoli Zhao: Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China
Bin Liu: Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China
Xiao Wang: Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China
Qingke Wen: Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China
Lijun Zuo: Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China
Fang Liu: Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China
Jingyong Xu: Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China
Shunguang Hu: Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China

Sustainability, 2016, vol. 8, issue 2, 1-15

Abstract: Inappropriate land use has caused a series of environmental disasters such as floods and sand storms, and some of them involved unused land changes with highly localized distributions in arid and semi-arid regions with fragile ecosystems. As the third-rank category of first-level land use/cover in China, unused land (UL) is now playing an increasingly important role in protection of the natural environment and sustainable utilization of land resources. In this article, we assessed the effects on regional eco-environments employing a quantitative EL (ecological effect index) model, which can be used to evaluate and represent the contribution of UL changes to the eco-environmental quality. Results show that UL changes generally contributed to the deterioration of eco-environmental quality during the study period. Some major contributors to improving eco-environmental quality were transformation of sandy land and saline-alkali lands to grasslands, expansion of water bodies in UL areas, and reclamation of farmland in UL areas (except for marsh lands). In contrast, the main contributors to worsening eco-environmental quality were grassland degradation to UL (except marshes), reclamation of marsh areas, and shrinkage of water bodies to leave desert or saline-alkali land. Some suggestions are provided about UL management, utilization, and protection issues.

Keywords: land use/cover; eco-environmental response; unused land; ecological restoration projects; grassland degradation; reclamation (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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