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AMBIO

, Volume 39, Issue 4, pp 279–283 | Cite as

Damage Caused to the Environment by Reforestation Policies in Arid and Semi-Arid Areas of China

  • Shixiong Cao
  • Tao Tian
  • Li Chen
  • Xiaobin Dong
  • Xinxiao Yu
  • Guosheng Wang
Report

Abstract

Traditional approaches to ecosystem restoration have considered afforestation to be an important tool. To alleviate land degradation in China, the Chinese government has therefore invested huge amounts of money in planting trees. However, the results of more than half a century of large-scale afforestation in arid and semi-arid China have shown that when the trees are not adapted to the local environment, the policy does not improve the environment, and may instead increase environmental degradation. When precipitation is lower than potential evaporation, surface soil moisture typically cannot sustain forest vegetation, and shrubs or steppe species replace the forest to form a sustainable natural ecosystem that exists in a stable equilibrium with the available water supply. The climate of much of northwestern China appears to be unsuitable for afforestation owing to the extremely low rainfall. Although some small-scale or short-term afforestation efforts have succeeded in this region, many of the resulting forests have died or degraded over longer periods, so policymakers must understand that these small-scale or short-term results do not support an inflexible policy of large-scale afforestation throughout arid and semi-arid northwestern China. Rather than focusing solely on afforestation, it would be more effective to attempt to recreate natural ecosystems that are better adapted to local environments and that thus provide a better chance of sustainable, long-term rehabilitation.

Keywords

Afforestation policy Environmental degradation Desertification Environmental restoration Livelihood Soil moisture Vegetation cover 

Notes

Acknowledgments

This study was supported by the 11th Five Scientific & Technological Sustaining Research Program of China (2006BAD26B0301). We thank Geoffrey Hart in Canada for his help in writing this article.

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Copyright information

© Royal Swedish Academy of Sciences 2010

Authors and Affiliations

  • Shixiong Cao
    • 1
  • Tao Tian
    • 2
  • Li Chen
    • 3
  • Xiaobin Dong
    • 4
  • Xinxiao Yu
    • 1
  • Guosheng Wang
    • 5
  1. 1.Soil and Water Conservation CollegeBeijing Forestry UniversityBeijingPeople’s Republic of China
  2. 2.College of Economics and ManagementChina Agricultural UniversityBeijingPeople’s Republic of China
  3. 3.Water and Soil Conservation Institute of Yan’an CityYan’anPeople’s Republic of China
  4. 4.State Key Laboratory of Earth Surface, Processes and Resource Ecology, College of Resources Science and TechnologyBeijing Normal UniversityBeijingPeople’s Republic of China
  5. 5.College of Agronomy and BiotechnologyChina Agricultural UniversityBeijingPeople’s Republic of China

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