Monitoring Lake Ecosystems Using Integrated Remote Sensing / Gis Techniques: An Assessment in the Region of West Macedonia, Greece

摘要: The environment and its land water systems are put into constant stress through the various human activities, natural climate processes. Water resource managers have long been incorporating information related to in their decisions. They also increasingly recognize that is an important source of uncertainty potential vulnerability long-term planning for sustainability resources (Hartmann, 2005). These leading questions about relative impacts shifts river hydraulics, use, conditions. Prospects change due global warming moved from realm speculation general acceptance. Climate will different effects on lakes. Lakes can be extremely sensitive shortand longterm changes weather so intrinsically a direct effect, or indirectly by affecting processes take place catchment. Understanding response lakes great importance since year-to-year patterns influence quality ecological status lake terms Framework Directive. Characterizing heterogeneity temporal across surface waters difficult conventional sampling methodologies (Tyler et al., 2006). In situ measurements collection samples subsequent laboratory analyses provide accurate point time space, but do not give either spatial view needed assessment management bodies (Schmugge 2002). Traditional monitoring as well other environmental parameters involves specialized personnel both site analysis. Field expensive conduct. For example, often includes clarity using Secchi disk. Therefore use Sechi Disk Transparency (SDT) has widely adopted many programs worldwide (Bukata al. 1988; Wallin Hakanson 1992; Lee 1995). Substances significantly backscattering characteristics water. Remote sensing techniques depend ability