阐明 2000 至 2020 年黄土高原显著绿化的复杂驱动因素

IF 4.7 2区 环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES Environmental Development Pub Date : 2024-04-23 DOI:10.1016/j.envdev.2024.100991
Yongcheng Gou , Yuxiang Tao , Pinglang Kou , Andres Alonso , Xiaobo Luo , Haibo Tian
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引用次数: 0

摘要

中国黄土高原的绿化及其驱动因素已被广泛研究,但不同气候带植被恢复的归因探索仍不明确。本研究基于 MOD13Q1 数据集计算的植被覆盖度(FVC)对黄土高原绿化进行了定量评估,比较了不同气候带的植被覆盖度,并探讨了绿化与降水、蒸发、土壤含水量、地表水体和人类活动之间的关系。研究发现,从 2000 年到 2020 年,黄土高原的土壤全绿化率以每年 0.538% 的速度显著增加,绿化率达到 94%。中温带的绿化率(0.557% yr-1)高于南温带(0.532% yr-1),但其平均森林覆盖率较低。这表明,水体 5 公里范围内的绿化率(0.551% yr-1)较高。与其他类型相比,耕地(15.26%)、草地(13.66%)和林木(12.57%)的森林覆盖率增量较高,而城市面积增加了 6 倍是绿化的一个重要障碍。此外,当城市经济总量超过 1000 亿时,FVC 与城市经济总量呈显著正相关。根据 GeoDetector 的计算,自然因素和人类活动的相互作用对绿化的贡献最大。据此推测,中温带绿化潜力巨大。然而,大规模植树可能不会产生催化作用,甚至会适得其反。要在未来实现黄土高原的可持续绿化,灌木和人工蓄水设施可能是关键。
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Elucidate the complex drivers of significant greening on the Loess Plateau from 2000 to 2020

Greening and its drivers in the Loess Plateau of China have been extensively studied, but attributional explorations regarding vegetation restoration in different climatic zones remain unclear. This study quantitatively evaluated greening on the Loess Plateau based on Fraction Vegetation Cover (FVC) calculated by MOD13Q1 dataset, compared FVC in different climatic zones, and explored the relationship between greening and precipitation, evaporation, soil water content (SWC), surface water bodies, and human activities. The study found that FVC on the Loess Plateau increased significantly at a rate of 0.538% yr−1 from 2000 to 2020, resulting in 94% greening. The greening rate was higher in the middle temperate zones (0.557% yr−1) than in the southern temperate zones (0.532% yr−1), but its average FVC was lower. This suggests that the greening rate (0.551% yr−1) is higher within 5 km of water bodies. Cropland (15.26%), grassland (13.66%) and trees (12.57%) had higher FVC increment than other types, while the six-fold increase in urban area is a significant impediment to greening. Additionally, there is a significant positive correlation with FVC when the urban economy exceeds 100 billion. The interaction of natural factors and human activities made the greatest contribution to greening, as calculated by the GeoDetector. It is hypothesized that there is significant potential for greening in the middle temperate zones. However, large-scale tree planting may not have a catalytic effect and could even be counterproductive. To achieve sustainable greening of the Loess Plateau in the future, shrubs and artificial water storage facilities may be key.

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来源期刊
Environmental Development
Environmental Development Social Sciences-Geography, Planning and Development
CiteScore
8.40
自引率
1.90%
发文量
62
审稿时长
74 days
期刊介绍: Environmental Development provides a future oriented, pro-active, authoritative source of information and learning for researchers, postgraduate students, policymakers, and managers, and bridges the gap between fundamental research and the application in management and policy practices. It stimulates the exchange and coupling of traditional scientific knowledge on the environment, with the experiential knowledge among decision makers and other stakeholders and also connects natural sciences and social and behavioral sciences. Environmental Development includes and promotes scientific work from the non-western world, and also strengthens the collaboration between the developed and developing world. Further it links environmental research to broader issues of economic and social-cultural developments, and is intended to shorten the delays between research and publication, while ensuring thorough peer review. Environmental Development also creates a forum for transnational communication, discussion and global action. Environmental Development is open to a broad range of disciplines and authors. The journal welcomes, in particular, contributions from a younger generation of researchers, and papers expanding the frontiers of environmental sciences, pointing at new directions and innovative answers. All submissions to Environmental Development are reviewed using the general criteria of quality, originality, precision, importance of topic and insights, clarity of exposition, which are in keeping with the journal''s aims and scope.
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