Assessment of Blue Carbon Storage Loss in Coastal Wetlands under Rapid Reclamation
Assessment of Blue Carbon Storage Loss in Coastal Wetlands under Rapid Reclamation
复制标题
快速围垦下滨海湿地蓝碳储量损失评估
DOI：
10.3390/su10082818
复制
发表时间：
2018-08-01
期刊：
影响因子：
3.9
通讯作者：
Li, Yangfan
中科院分区：
文献类型：
--
作者：
Li, Yi;Qiu, Jianhui;Li, Yangfan
高生产力的沿海湿地在储存蓝碳方面发挥着至关重要的作用，作为其生态系统服务之一，但它们越来越受到密集的开垦活动的危害，以促进人口的快速增长和城市化。沿海围垦导致湿地生态系统的破坏和严重退化，这可能会影响其储存蓝碳的能力。为配合国际上关于蓝碳的研究，对中国沿海围垦湿地蓝碳储量动态进行了研究。通过整合从实地测量实验和文献中收集的碳密度数据，使用InVEST模型，碳储存和封存来估计1990年至2015年期间整个填海区的碳储存。这是第一张能够在全国范围内提供沿海填海地区蓝色碳储存信息的地图。我们发现，超过380，000公顷的沿海湿地受到填海的影响，这导致了钙的释放。20.7蓝碳的Tg。从自然湿地到人工湿地的碳损失占总碳损失的72.5%，这突出了海岸带可持续性管理的主要任务。此外，碳储量损失前20%的滨海湿地占总填海面积的4.2%，这可以作为海岸红线规划的关键信息。我们得出的结论是，由于天然湿地的转换释放的蓝碳超过了总的碳排放量的能源消耗在填海区。实施红线政策可以指导沿海地区的管理，从而提高碳排放和可持续生态系统服务的弹性。
Highly productive coastal wetlands play an essential role in storing blue carbon as one of their ecosystem services, but they are increasingly jeopardized by intensive reclamation activities to facilitate rapid population growth and urbanization. Coastal reclamation causes the destruction and severe degradation of wetland ecosystems, which may affect their abilities to store blue carbon. To assist with international accords on blue carbon, we evaluated the dynamics of blue carbon storage in coastal wetlands under coastal reclamation in China. By integrating carbon density data collected from field measurement experiments and from the literature, an InVEST model, Carbon Storage and Sequestration was used to estimate carbon storage across the reclamation area between 1990 and 2015. The result is the first map capable of informing about blue carbon storage in coastal reclamation areas on a national scale. We found that more than 380,000 hectares of coastal wetlands were affected by reclamation, which resulted in the release of ca. 20.7 Tg of blue carbon. The carbon loss from natural wetlands to artificial wetlands accounted for 72.5% of total carbon loss, which highlights the major task in managing coastal sustainability. In addition, the top 20% of coastal wetlands in carbon storage loss covered 4.2% of the total reclamation area, which can be applied as critical information for coastal redline planning. We conclude that the release of blue carbon due to the conversion of natural wetlands exceeded the total carbon emission from energy consumption within the reclamation area. Implementing the Redline policy could guide the management of coastal areas resulting in greater resiliency regarding carbon emission and sustained ecosystem services.