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Title: Ecological engineering projects increased vegetation cover, production, and biomass in semiarid and subhumid Northern China

Journal Article · · Land Degradation and Development
DOI: https://doi.org/10.1002/ldr.3351 · OSTI ID:1580908
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4];  [5];  [4];  [4]; ORCiD logo [4]; ORCiD logo [6];  [7]; ORCiD logo [6];  [6];  [8]; ORCiD logo [8];  [9];  [9];  [5]
  1. Lanzhou Univ. (China); Univ. of Oklahoma, Norman, OK (United States); Emergency Mapping Engineering Reseach Center, Gansu Province, Lanzhou (China)
  2. Univ. of Oklahoma, Norman, OK (United States); Fudan Univ., Shanghai (China). Ministry of Education Key Lab. for Biodiversity Science and Ecological Engineering, Inst. of Biodiversity Science
  3. Univ. of Oklahoma, Norman, OK (United States); Columbia Univ., New York, NY (United States)
  4. Univ. of Oklahoma, Norman, OK (United States)
  5. Lanzhou Univ. (China)
  6. Univ. of Copenhagen (Denmark)
  7. Chinese Academy of Sciences (CAS), Changsha (China). Key Lab. for Agro‐ecological Processes in Subtropical Region, Inst. of Subtropical Agriculture
  8. Boston Univ., MA (United States)
  9. Southwest Forestry Univ., Kunming (China)

Multiple ecological engineering projects have been implemented in semiarid and subhumid Northern China since 1978 with the purpose to combat desertification, control dust storms, and improve vegetation cover. Although a plethora of local studies exist, the effectiveness of these projects has not been studied in a systematic and comprehensive way. Here, we used multiple satellite-based time-series data as well as breakpoint analysis to assess shifts in leaf area index (a proxy for green vegetation cover), gross primary production, and aboveground biomass in Northern China. We documented increased vegetation growth in northwest and southeastern parts of the region, despite drought anomalies as documented by the standardized precipitation-evapotranspiration index during 1982–2016. Significant breakpoints in leaf area index were observed for over 72.5% of the southeastern and northwestern regions, and 70.6% of these breakpoints were detected after 1999, which correspond well to the areas with the highest ecological engineering efforts. Areas with negative trends were mainly located in the Inner Mongolian Plateau, Hulun Biur, Horqin Sand Land, and urban areas. The Loess Plateau had the largest increase in vegetation growth, followed by the north parts of Northern China where biomass increased more in the provinces of Shanxi, Liaoning, Shannxi, Hebei, and Beijing than Xinjiang, Inner Mongolia, Tianjin, and Qinghai. Our results show that multiple ecological engineering projects in the region have increased vegetation cover, production, and aboveground biomass that have led to improved environmental conditions in the study area.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC); National Science Foundation of China
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1580908
Journal Information:
Land Degradation and Development, Journal Name: Land Degradation and Development Journal Issue: 13 Vol. 30; ISSN 1085-3278
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (1)

Assessing the Effects of Desertification Control Projects from the Farmers’ Perspective: A Case Study of Yanchi County, Northern China journal February 2020