Rebound in China’s coastal wetlands following conservation and restoration
Rebound in China’s coastal wetlands following conservation and restoration
复制标题
中国滨海湿地保护和恢复后的恢复
DOI：
10.1038/s41893-021-00793-5
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发表时间：
2021
影响因子：
27.6
通讯作者：
Bo Li
中科院分区：
文献类型：
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作者：
Xinxin Wang;Xiangming Xiao;Xiao Xu;Zhenhua Zou;Bangqian Chen;Yuanwei Qin;Xi Zhang;Jinwei Dong;Diyou Liu;Lianghao Pan;Bo Li
自1980年代初以来，中国沿海地区经历了人口、经济和城市化的大幅度增长。许多研究报告了中国沿海湿地在地方到区域尺度上的丧失、退化和破碎化。目前，在全国范围内，我们对中国滨海湿地的空间分布、年际变化和年代际变化趋势的了解仍然非常有限。在这里，我们分析了1984-2018年期间的约62，000张Landsat-5，-7和-8图像，并以30米的空间分辨率生成了中国沿海湿地的地图。我们发现，1984年至2011年期间，沿海湿地面积显著减少。我们还发现，自2012年以来，盐沼面积大幅增加，潮滩面积呈稳定趋势，这是由于人类活动减少以及保护和恢复工作增加。这些1984-2018年的沿海湿地地图对于改善中国沿海湿地管理和可持续性具有重要意义。
The coastal zone of China has experienced large increases in population, economy and urbanization since the early 1980s. Many studies have reported the loss, degradation and fragmentation of coastal wetlands in China at local to regional scales. To date, at the national scale, our knowledge of the spatial distribution, inter-annual variation and multi-decadal trends of coastal wetlands in China remains very limited. Here we analysed ~62,000 Landsat-5, -7 and -8 images over the period 1984–2018 and generated maps of coastal wetlands for individual years in China at 30-m spatial resolution. We found that coastal wetland area significantly decreased between 1984 and 2011. We also found a substantial increase in saltmarsh area and a stable trend of tidal flat area since 2012, driven by reduced anthropogenic activities and increased conservation and restoration efforts. These coastal wetland maps for the period 1984–2018 are invaluable for improvement of coastal wetland management and sustainability in China.