Mangrove wetlands distribution status identification, changing trend analyzation and carbon storage assessment of China

IF 4.6 3区地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY

China Geology Pub Date : 2024-01-01 DOI:10.31035/cg2023049

Chang Li , Fu Wang , Peng Yang , Fei-cui Wang , Yun-zhuang Hu , Yan-lin Zhao , Li-zhu Tian , Rui-bin Zhao

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Abstract

This research investigates the ecological importance, changes, and status of mangrove wetlands along China’s coastline. Visual interpretation, geological surveys, and ISO clustering unsupervised classification methods are employed to interpret mangrove distribution from remote sensing images from 2021, utilizing ArcGIS software platform. Furthermore, the carbon storage capacity of mangrove wetlands is quantified using the carbon storage module of InVEST model. Results show that the mangrove wetlands in China covered an area of 278.85 km² in 2021, predominantly distributed in Hainan, Guangxi, Guangdong, Fujian, Zhejiang, Taiwan, Hong Kong, and Macao. The total carbon storage is assessed at 2.11×10⁶ t, with specific regional data provided. Trends since the 1950s reveal periods of increase, decrease, sharp decrease, and slight-steady increases in mangrove areas in China. An important finding is the predominant replacement of natural coastlines adjacent to mangrove wetlands by artificial ones, highlighting the need for creating suitable spaces for mangrove restoration. This study is poised to guide future mangrove-related investigations and conservation strategies.

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中国红树林湿地分布现状识别、变化趋势分析及碳储量评估

本研究调查了中国海岸线红树林湿地的生态重要性、变化和现状。利用 ArcGIS 软件平台，采用目视判读、地质调查和 ISO 聚类无监督分类方法，从 2021 年的遥感图像中解读红树林的分布。此外，还利用 InVEST 模型的碳储存模块对红树林湿地的碳储存能力进行了量化。结果显示，2021 年中国红树林湿地面积为 278.85 平方公里，主要分布在海南、广西、广东、福建、浙江、台湾、香港和澳门。据评估，总碳储量为 2.11×106 t，并提供了具体的区域数据。从 20 世纪 50 年代以来的趋势来看，中国红树林面积经历了增加、减少、急剧下降和略有稳定增加的时期。一个重要的发现是，与红树林湿地相邻的自然海岸线主要被人工海岸线取代，这凸显了为红树林恢复创造合适空间的必要性。这项研究将为未来的红树林相关调查和保护战略提供指导。

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来源期刊

China Geology GEOLOGY-

CiteScore

7.80

自引率

11.10%

发文量

275

审稿时长

16 weeks