Dey Rupak, Vaidya Khayali, Solanki Manish, Naz Aliya, Jadeja Mayurdhvajsinh, Jadeja Vandanaba, Sharma Seema B, Chowdhury Abhiroop
Department of Earth and Environmental Science, KSKV Kachchh University, Mundra Road, Bhuj, Kachchh, Gujarat, 370001, India.
Department of Earth and Environmental Science, KSKV Kachchh University, Mundra Road, Bhuj, Kachchh, Gujarat, 370001, India.
Mar Environ Res. 2025 Sep;210:107295. doi: 10.1016/j.marenvres.2025.107295. Epub 2025 Jun 13.
Mangrove ecosystems can sequester blue carbon, yet anthropogenic activities increasingly threaten it's habitat and carbon storage capacity. The blue carbon sequestration potential of mangroves is an underexplored avenue in climate change science. The sustainable development goal (SDG)13 strongly emphasizes the need to reduce carbon emissions, whereas SDG 14 focuses on conserving coastal and marine ecosystems Understanding mangroves' essential ecosystem services, primarily 'blue carbon', distributed in different climatic zones is being prioritized by academics and policymakers. The Indian subcontinent is endowed with mangroves along its different coasts; however, the semiarid mangrove patches only exist in the western Indian district of Kachchh and are largely, unexplored. In our present study, we conducted a comprehensive assessment of sediment carbon stocks across multiple sites subjected to varying degrees of industrialization, urbanization, and agricultural encroachment along the coastline of Kachchh mangroves. Sediment cores were obtained from mangrove areas categorized as pristine, moderately impacted, and heavily industrialized to measure organic carbon content and assess its relationship with Normalized Difference Vegetation Index (NDVI). The approach aimed to evaluate variations in the blue carbon pool concerning different land use patterns. Seasonal sampling of mangrove sediments was conducted in both anthropogenically impacted and unaffected zones, with the resulting data analyzed using a three-way ANOVA (analysis of variance) within GLM (general linear model). A relationship was observed between anthropogenic activities and values of organic carbon density (OCD) and blue carbon pool. Respite of Mangrove restoration activities, the human intervention led to lower OCD values (1.2 % and 1.4 %, S.E. = ±.56) near industrial activity zones. This calls for combined efforts from all sectors to restore these fragile ecosystems in the region. The contributing role of mangroves as blue carbon sink is important in the fight against climate change.
红树林生态系统能够封存蓝碳，然而人为活动日益威胁着其栖息地和碳储存能力。红树林的蓝碳封存潜力在气候变化科学领域仍是一个未被充分探索的领域。可持续发展目标（SDG）13强烈强调减少碳排放的必要性，而SDG 14则侧重于保护沿海和海洋生态系统。了解分布在不同气候区的红树林的基本生态系统服务，主要是“蓝碳”，已成为学者和政策制定者的优先事项。印度次大陆在其不同海岸都有红树林；然而，半干旱红树林斑块仅存在于印度西部的卡奇地区，且在很大程度上未被探索。在我们目前的研究中，我们对卡奇红树林海岸线沿线多个受到不同程度工业化、城市化和农业侵占的地点的沉积物碳储量进行了全面评估。从被归类为原始、中度受影响和高度工业化的红树林地区获取沉积物岩心，以测量有机碳含量并评估其与归一化植被指数（NDVI）的关系。该方法旨在评估不同土地利用模式下蓝碳库的变化。在人为影响区和未受影响区都对红树林沉积物进行了季节性采样，并使用广义线性模型（GLM）中的三因素方差分析（ANOVA）对所得数据进行分析。观察到人为活动与有机碳密度（OCD）值和蓝碳库之间存在关联。尽管有红树林恢复活动，但人类干预导致工业活动区附近的OCD值较低（分别为1.2%和1.4%，标准误=±0.56）。这就需要所有部门共同努力来恢复该地区这些脆弱的生态系统。红树林作为蓝碳汇的重要作用在应对气候变化中至关重要。
