Spatiotemporal assessment of mangrove cover, soil salinity, and nutrient patterns in Chengmai County using remote sensing (2018-2023)
文献类型： 外文期刊
作者： Solangi, Kashif Ali 1 ; Yang, Zexiu 2 ; Wei, Xiaochun 1 ; Solangi, Farheen 3 ; Zeng, Di 1 ; Liu, Lei 4 ; Wang, Kangbing 5 ; Zhang, Jinling 1 ; Song, Xiqiang 1 ;
作者机构： 1.Hainan Univ, Sch Trop Agr & Forestry, Key Lab Genet & Germplasm Innovat Trop Special For, Minist Educ, Danzhou 571700, Peoples R China
2.Hainan Evergreen Inst Forestry Ecol Res, Haikou 570220, Peoples R China
3.Jiangsu Univ, Res Ctr Fluid Machinery Engn & Technol, Zhenjiang 212013, Peoples R China
4.Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Haikou 571101, Peoples R China
5.Mangrove Management Ctr Chengmai Cty, Chengmai 571999, Peoples R China
关键词： Mangrove conservation; Soil salinity assessment; Change detection; Land use land cover; Sustainable Development Goals (SDGs)
期刊名称：ECOLOGICAL INDICATORS （ 影响因子：7.4； 五年影响因子：7.2 ）
ISSN： 1470-160X
年卷期： 2025 年 178 卷
页码：
收录情况： SCI
摘要： The protection, conservation, and restoration of coastal ecosystems, including mangrove forests, are key targets of the United Nations Sustainable Development Goals (SDGs) for 2030. Ground-truth data combined with satellite-based observations provide essential historical insights, enabling the development of dynamic management strategies and the formulation of effective policy interventions. This study assesses the soil characteristics and mangrove cover in Chengmai County by integrating multiple datasets. The results indicate that most of the study area consists of non-saline to low-saline soils, with high and extreme salinity confined to the upper portion of the county. Soil pH remained acidic throughout the region, with values ranging from 4.4 to 6.2. Furthermore, the alkali-hydrolyzed nitrogen content ranged from 109 to 234.9 mg/kg, available phosphorus from 3.5 to 135 mg/kg, and available potassium from 24.3 to 124.1 mg/kg, respectively. Over six years (2018-2023), mangrove cover has shown an increasing trend, with a total expansion of 17.7 %. This increasing trend of mangroves suggests coastal resilience and enhanced ecosystem functionality. However, the observed trend indicates a possible stabilization in mangrove expansion or being influenced by specific environmental and anthropogenic factors regulating mangrove growth in the Chengmai region.
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