Gauging policy-driven large-scale vegetation restoration programmes under a changing environment: Their effectiveness and socio-economic relationships.
Gauging policy-driven large-scale vegetation restoration programmes under a changing environment: Their effectiveness and socio-economic relationships.
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DOI：
10.1016/j.scitotenv.2017.07.044
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发表时间：
2017-12
期刊：
影响因子：
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通讯作者：
Ting Li;Y. Lü;B. Fu;A. Comber;P. Harris;Lianhai Wu
中科院分区：
文献类型：
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作者：
Ting Li;Y. Lü;B. Fu;A. Comber;P. Harris;Lianhai Wu
大规模生态恢复已被全球广泛接受为应对环境危机和促进可持续性的有效战略。评估生态恢复的有效性对研究人员、实践者和政策制定者至关重要。然而，很少有实用的工具来执行这些任务，特别是在复杂的社会生态系统中的大规模恢复方案。采用“前后对比”设计，通过比较植被覆盖度和植被生产力的变化趋势，构建综合指数（Ej）来评价生态恢复效果。该指数揭示了不同时间段植被恢复的动态和空间异质性过程，可为区域尺度的生态恢复管理提供信息。通过三个时间段的结构方程模型来探索有效性及其与社会经济因素的关系。结果表明，时间尺度是一个关键因素，在代表恢复效果，社会经济因素的影响也可以随着时间的推移，提高恢复效果提供见解。提出了促进第三产业发展以吸收农村劳动力和改善农业生产方式的双轨战略，作为提高恢复效果的有前途的战略。在这一过程中，提倡及时和长期的生态恢复监测，以确保这些方案的成功和可持续性，同时在不同时间尺度上的社会-生态相互作用是关键问题的情况下，作出更多的信息性决策。
Large-scale ecological restoration has been widely accepted globally as an effective strategy for combating environmental crises and to facilitate sustainability. Assessing the effectiveness of ecological restoration is vital for researchers, practitioners, and policy-makers. However, few practical tools are available to perform such tasks, particularly for large-scale restoration programmes in complex socio-ecological systems. By taking a “before and after” design, this paper formulates a composite index (Ej) based on comparing the trends of vegetation cover and vegetation productivity to assess ecological restoration effectiveness. The index reveals the dynamic and spatially heterogenic process of vegetation restoration across different time periods, which can be informative for ecological restoration management at regional scales. Effectiveness together with its relationship to socio-economic factors is explored via structural equation modeling for three time periods. The results indicate that the temporal scale is a crucial factor in representing restoration effectiveness, and that the effects of socio-economic factors can also vary with time providing insight for improving restoration effectiveness. A dual-track strategy, which promotes the development of tertiary industry in absorbing the rural labor force together with improvements in agricultural practices, is proposed as a promising strategy for enhancing restoration effectiveness. In this process, timely and long-term ecological restoration monitoring is advocated, so that the success and sustainability of such programmes is ensured, together with more informative decision making where socio-ecological interactions at differing temporal scales are key concerns.