**1. Introduction**

A natural resource is any kind of energy or substance that is necessary to meet the physiological, social, economic and cultural needs of humanity and to maintain all the various activities that lead to production. Natural resources such as solar energy, forests, crops, fisheries, etc. are renewable, and such as oil, coal, natural gas, etc. are not renewable (Rao). National development requires a comprehensive approach to natural resource management. Sustainable natural resource management requires long-term oversight. Periodic evaluation and monitoring of natural resources enables policymakers to be vigilant in the optimal use of resources and the development process to act promptly [1–3]. In recent years, remote sensing data has been widely used in various fields of natural resource management as it is one of the best data sources for large-scale applications [4]. In general, remote sensing is "the measurement or acquisition of information about the properties of an object or phenomenon by a recording device (sensor: satellite or aircraft) that is not studied in physical or direct contact with the phenomenon" [5]. Integrated use of remote sensing data, GPS and GIS enables consultants, natural resource managers and researchers in government agencies, conservation organizations and industry to develop management plans for a variety of natural resource management programs [6]. When natural resources are identified using remote sensing data, sampling strategies are also used to collect and evaluate field observations of the variables at the selected locations [7]. Remote sensing is a powerful tool for studying land cover, forest management, water quality parameters, etc. in remote locations. Among the studies using modern remote sensing technology to estimate the concentration of

chlorophyll-A (phytoplankton pigment) in the coastal areas of Iran [8] and also in Vietnam has been used to identify and estimate the upper biodiversity of mangrove forests. In the next section, we discuss some of the applications of remote sensing in marine ecosystem management.
