Excessive reliance on afforestation in China's arid and semi-arid regions: Lessons in ecological restoration
Excessive reliance on afforestation in China's arid and semi-arid regions: Lessons in ecological restoration
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DOI：
10.1016/j.earscirev.2010.11.002
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发表时间：
2011-02-01
影响因子：
12.1
通讯作者：
Zhang, Hong
中科院分区：
文献类型：
--
作者：
Cao, Shixiong;Chen, Li;Zhang, Hong
造林是我国防治荒漠化和水土流失的主要手段。然而，大规模植树造林对未来生态系统的结构和组成有着复杂而又知之甚少的影响。在此，我们讨论了中国历史上的大规模植树造林的做法和该计划的影响之间的潜在联系，在干旱和半干旱地区的环境恢复在北方中国的基础上发表的论文的数据进行审查，并提供建议，以克服目前的环境政策的缺陷。虽然植树造林是环境恢复的一个重要途径，但中国目前的政策并不适合当地的环境条件，导致使用不适当的物种和过度强调树木和灌木的种植，从而影响了实现环境政策目标的能力。中国在增加森林覆盖率方面的巨额投资似乎有可能加剧环境脆弱地区的环境恶化，因为它忽视了气候、土壤学、水文和景观因素，这些因素可能使一个地点不适合植树造林。在许多情况下，这导致土壤生态系统恶化，植被减少，并加剧了水资源短缺。迫切需要进行大规模和长期的研究，以提供信息，支持更有效和灵活的环境恢复政策。(C)2010爱思唯尔有限公司版权所有。
Afforestation is a primary tool for controlling desertification and soil erosion in China. Large-scale afforestation, however, has complex and poorly understood consequences for the structure and composition of future ecosystems. Here, we discuss the potential links between China's historical large-scale afforestation practices and the program's effects on environmental restoration in arid and semi-arid regions in northern China based on a review of data from published papers, and offer recommendations to overcome the shortcomings of current environmental policy. Although afforestation is potentially an important approach for environmental restoration, current Chinese policy has not been tailored to local environmental conditions, leading to the use of inappropriate species and an overemphasis on tree and shrub planting, thereby compromising the ability to achieve environmental policy goals. China's huge investment to increase forest cover seems likely to exacerbate environmental degradation in environmentally fragile areas because it has ignored climate, pedological, hydrological, and landscape factors that would make a site unsuitable for afforestation. This has, in many cases, led to the deterioration of soil ecosystems and decreased vegetation cover, and has exacerbated water shortages. large-scale and long-term research is urgently needed to provide information that supports a more effective and flexible environmental restoration policy. (C) 2010 Elsevier B.V. All rights reserved.