Mangrove ecosystems in the Mekong Delta. Overcoming uncertainties in inventory mapping using satellite remote sensing data

摘要: In the Mekong Delta of Vietnam, losses mangroves have been especially severe over last decades mainly due to clearing for shrimp farming leading a land use conflict between mangrove silviculture and aquaculture. Following law on rules natural resource utilisation reforestation forests (1999), farming-forestry enterprises (SFFEs) therefore established where are cultured together with in integrated systems whereby 60% farm area must be protected mangrove. Monitoring tools required map extent aquaculture delineate percentage mixed mangrove-aquaculture farms. Current methodologies forest mapping estimation require large amount manual work. addition, currently applied base data acquisition transformation into statistics or maps varying. This is different estimates same region statistical surveys. Similar problems arise actual distribution which generated based sources methodologies. Precise reliable increasing importance, since changes these ecosystems often occur rapidly. There growing demand detecting assessing context climate change, sea level rise related threats coastal ecosystems. International organizations government agencies several countries are, this reason, urgently implementing programs monitoring measure decline important Remote sensing enables large-scale, rapid, long-term, cost-effective that provides information inventory mapping, change detection, activities. It also supports various management requests, ecosystem evaluation, productivity measurement, water quality assessment, disaster management.