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首页> 外文期刊>Ocean & coastal management >Assessing the changes of mangrove ecosystem services value in the Pars Special Economic Energy Zone
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Assessing the changes of mangrove ecosystem services value in the Pars Special Economic Energy Zone

机译：评估帕尔斯特别经济能源区的红树林生态系统服务价值的变化

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The Pars Special Economic Energy Zone (PSEEZ) is the largest global special economic zone in the field of oil, gas, and petrochemical industry. The Nayband national marine park is located in the PSEEZ and mangrove forests are spread throughout the estuaries (Bidkhun or Asaloyeh, Basatin and Haleh) of the park. Despite important goods and ecosystem services of mangroves and their high economic value, mangroves within the PSEEZ are threatened by activities of the oil industry. Thus, it is necessary to monitor and assess the mangroves and their ecosystem services. In this context, remote sensing technologies provide effective tools for spatio-temporal analysis of mangrove distribution. In this study, Landsat-5, 7, 8 images were used from 1986 to 2018. Support Vector Machine (SVM) and Sen's slope was employed for monitoring mangrove cover changes and estimating Normalized Difference Vegetation Index (NDVI) trends. In assessing the economic value of the ecosystem services of the Mangrove forests, the mangrove distribution changes and global values of mangrove ecosystem services were integrated. The results revealed that the coverage of mangroves had increased to about nearly 204.93 ha in area from 1986 to 2003, followed by a drop to 169.29 ha in 2018. The economic value of mangrove forests of the PSEEZ in 1986, 1998, 2003, 2015 and 2018 was estimated to be about 3.3, 3.8, 6.7, 6.5 and 5.5 million US dollars per year, respectively. Based on Sen's slope, the NDVI trend in Basatin estuary decreased at a rate of - 0.001, but showed significant increases of about 0.008 and 0.006 for the Bidkhun and the Haleh estuaries, respectively. Despite the suitable distribution and an economic value of $1.9 million in 1986, conditions of the Basatin estuary seem to have diminished from 1986 to 2018 (economic value of $0.71 million in 2018). The Bidkhun estuary, which showed a positive trend in distribution changes, has also been downgrading since 2015 to about 30.43 ha in size, and an economic value of $1 million. Since 1998, the mangroves of Haleh estuary have been improving distribution-wise, with further elevations in economic value ($ 0.26 million in 2018).
机译：帕尔斯经济特区（PSEEZ）是石油，天然气和石化工业领域中最大的全球经济特区。内班德国家海洋公园位于PSEEZ，红树林遍布公园的河口（比德坤或Asaloyeh，Basatin和Haleh）。尽管红树林具有重要的商品和生态系统服务，并具有很高的经济价值，但PSEEZ内的红树林仍受到石油行业活动的威胁。因此，有必要监测和评估红树林及其生态系统服务。在这种情况下，遥感技术为红树林分布的时空分析提供了有效的工具。在这项研究中，从1986年到2018年使用Landsat-5、7、8幅图像。采用支持向量机（SVM）和森氏坡度监测红树林覆盖率变化并估算归一化植被指数（NDVI）趋势。在评估红树林森林生态系统服务的经济价值时，对红树林分布变化和红树林生态系统服务的全球价值进行了综合。结果显示，从1986年至2003年，红树林的覆盖面积已增加至约204.93公顷，然后在2018年下降至169.29公顷。PSEEZ的红树林的经济价值分别为1986、1998、2003、2015和2015年。据估计，2018年分别约为每年3.3、3.8、6.7、6.5和550万美元。基于Sen的斜率，Basatin河口的NDVI趋势以-0.001的速率下降，但Bidkhun河口和Haleh河口的NDVI趋势分别显着增加约0.008和0.006。尽管1986年分布合理，经济价值为190万美元，但从1986年到2018年，巴沙丁河口的状况似乎有所减少（2018年的经济价值为71万美元）。 Bidkhun河口的分布变化呈积极趋势，自2015年以来也一直降级为30.43公顷，经济价值为100万美元。自1998年以来，哈勒河口的红树林一直在改善分布范围，经济价值进一步提高（2018年为26万美元）。

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