Topography Investigation And Satellite Data Inversion Of Lake-level Temperature Field About Thousand-island Lake

Lakes which are the most important freshwater ecosystems on the planet are an importantnatural resource for human life and production. In recent years, for the continuous expansion ofurban scale and the development of industry and agriculture, China lakes pollution problems havebecome seriously. They affect social stability and constraints lak district’s long-term economicgrowth. Therefore,the lake aquatic ecosystem need to govern and improve. Aeration technologyis a new kind of lake pollution control technology in recent years developed. Through betting gas towater, it increase the dissolved oxygen and restrain phosphorus release in the bottom water. At thesame time,it promote aerobic microbial’s breeding which degradate lake’s other pollutants.Aeration technology can improve the overall quality of the lake effectively. Research about aerationtechnology improve lake eutrophication starts late. There is no Three-dimensional numerical modelto predict effection that aeration technology is act on lake’s flow field，temperature field，dissolvedoxygen，phosphorus concentration.Firstly, the paper reviews the existing lake pollution control technology and introduces theprinciple and development status of aeration technology. In accordance with the request aboutaeration affect lake environmental,it develop a technology roadmap about creating Thousand-islandLake’s three-dimensional numerical model. Secondly,it not only draw Thousand islands lake’sshoreline to form a vector file by100thousand coordinate points, but also survey the hydrologydata of Thousand-island Lake. Lastly, for remote sensing technology which offer a wide range oftarget monitoring data in real time without modified by time and topography,it can offer effectivetechnical support to Thousand-island Lake’s numerical simulation. Water temperature is animportant ecological element in lake’s studying. It affect the distribution rate of biochemicalreactions in water and the growth of organisms directly. The paper use remote sensing technologyto invert the temperature distribution in Thousand-island Lake, which is in accordance with regular.Thousand-island Lake lake’s three-dimensional numerical simulation is a system engineering,and need the work in many aspects. The paper which creat Thousand-island Lake’s vector file,hydrology and temperature distribution offer modeling foundation and initial conditions toThousand-island Lake’s three-dimensional numerical simulation. It’s difficult to use conventionalmethod to monitor lake that large area water.To numerical simulation about Thousand-island lake,remote sensing can provide solutions that reliable, stable and easy to implement.