03. Assessment of Hai Phong mangrove deforestation and reforestation in the period 2015-2022 using multi-temporal Sentinel data and Google Earth Engine

Abstract

The article has outlined the current status and assessed the change of mangrove area in Hai Phong city in the period of 2015 - 2022 using Google Earth Engine and Sentinel 2 satellite images. Research results show that the area of mangroves in Hai Phong city has decreased by about 220.49 ha in the period 2015 - 2022. Many districts have a decline in mangrove area, specifically: Tien Lang (4.58 %), Cat Hai (13.,5 %), Thuy Nguyen (20.28 %), Hai An (44.54 %). In addition, some localities still preserve and develop the area of mangroves, such as Do Son, which has the highest percentage of additional forest (72.48 %) and is also the place with the highest rate of forest loss at least (5.52 %). In addition, some localities with an increased percentage of real forest are Duong Kinh (12.42 %), Kien Thuy (20.67 %). The area of mangroves has been reduced mainly due to conversion of use purposes to aquaculture and construction of infrastructure. To achieve conservation and sustainable development of mangroves, it is necessary to have specific plans and action plans for socio-economic development by local management agencies. Simultaneously, strengthening the coordination among stakeholders, implementing the mangrove co-management mechanism for the people, both contributing to livelihoods, increasing production, generating income and protecting and developing mangroves.