The Inner Lake in Zhenjiang City was taken as an research area.

Through comparative analysis of cage fish culture effects, the paper proved that the fish species that have high request for water quality can suit for river cage fish-culture and that the fish species that can endure low level oxygen can suit for rich inner lake fish culture.

Starting with the opinion on the variation of climate and environment, it comments and introduces the current situation of the research on forecast of variation of water level of inland lakes affecting the safety of railway operation, and forecasts the future work as well.

Inland lake water quality remote sensing differs from ocean color remote sensing, which demands remote sensing data with high spatial & spectral resolution and complex inversion algorithm.

According to the measured data of typical inland lakes in northwest China, this research has revealed the characteristics of lake evolution and their mechanismduring the past 40 years.

The physical geography environment,the forming and distributing of the water resource in Ali area of Tibet are analyzed,basing on the difference of the groundwater resource forming environment,the water circulation system can be divided into alluvium and diluvium groundwater of rivervale in south and flows-in lake basin groundwater in north.