There are many problems in eco-geological environment evaluation

such as being short of macro

difficulty of data acquisition

trouble of indicator quantitative analysis and operation.Consequently

eco-geological environment evaluation and its dynamic monitoring is influenced by them.In order to solve this problem

this paper discusses the feasibility of eco-geological environmental evaluation with NDVI and lakes changes and open out practice in QingZang Plateau.Firstly

analyzing lake changes by considering the influence of eco-geological environment in lake source area

the relationship among eco-geological environment

lake change and NDVI change in lake source area are established.Secondly

a method of eco-geological environment assessment which is named as "Assessment of eco-geological environment base on Remote Sensing Dynamic Changes Information of Lakes and NDVI"

for short "L-N"

is given.Finally

based on the survey data of lake by Remote Sensing technique with Landsat TM in 1990’s and Landsat ETM in 2000’s

with contemporaneous NDVI data from NOAA/AVHRR sensor

the eco-geological environment assessment of QingZang Plateau is accomplished by "L-N".The results show that: The eco-giologic environment of QingZang Plateau has been worsening

it is obvious in the fringe area of north Plateau

Rivers Sources of Yangtze River

specially Qaidam Basin.On the contrast

environment situation is preferable in southeast of the Plateau and Yarlung Tsangpo river basin.From the evaluation result of QingZang Plateau

"L-N" way obtains closely consilient outcome and its needful index is consumedly decreasing

at the same time

with nicer and easy operation.Ulteriorly

in virtue of powerful monitoring ability of Remote Sensing technology

it is beneficial to develop dynamic eco-geological environment evaluation investigating in QingZang Plateau.In conclusion

it is helpful to promote efficiency of environment monitoring by "L-N" with Remote Sensing technology

having the characteristic of reducing many evaluating index

expediently being investigated by Remote Sensing technology and feasibility.In addition

it is a significant for eco-geological environment to monitor lake and NDVI data in QingZang Plateau.If correlative theory can be advanced

ploting out fixed area and surveying lakes will change by Remote Sensing image processing technique.Therefore

it is possible that we can improve

eco-geological environment status of a region in macroscopical scale.