关键词: 青藏高原, 湖泊, 水量, 水质, 基础调查, 遥感

Abstract:

There are a large number of lakes distributed on the Tibetan Plateau (TP), which are sensitivic to climatic change. Lakes, as one of the important components of underlying surface on the TP, not only affect the regional climate by land-atmosphere water and energy exchanges, but also record the information of climatic change through sediments. Lake water storage and water physicochemical property are basic factors affecting water and energy exchanges between lake and atmosphere, and lake sedimentary processes. The basic investigation of lake water storage and water physicochemical property on the TP is one of the key issues for deep understanding the responses and influence of TP in the climatic change. Based upon the basic investigations of the lakes on the TP during past 5 years, we have clarified some fuzzy recognition and renewed the basic data of some important lakes. The lake area and water storage of the TP and their changes with climatic change, as well as the spatio-temporal difference, have been elucidated. Further, a new method is introduced to study water physicochemical properties and their changes within the ranges of long time and wide area based upon water color derived from remote sensing images.