Drying-up of Rivers Wetland degradation 40% of the total rivers was - - PowerPoint PPT Presentation

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Oct 24, 2023 309 likes •369 views

Drying-up of Rivers Wetland degradation 40% of the total rivers was the rate reaches 90% changed to be seasonal rivers Eco-environment degradation in Hai River due to water shortage Decrease of Over-extraction of Inflow to Sea the

SLIDE 1

Wetland degradation

the rate reaches 90%

Drying-up of Rivers

40% of the total rivers was changed to be seasonal rivers

Over-extraction of the Groundw ater

The area in the aquifer comes to 44,000km2。 Eco-environment degradation in Hai River due to water shortage

Decrease of Inflow to Sea

the rate approaches 90%

SLIDE 2

Semi quantitative and quantitative analysis

applied to Case study in Miyun Reservoir Basin, Beijing Capital

SLIDE 3

Index System

Clim ate change
Hydrological change
I nfluence of reservoir
peration
Urban w ater dem and
Urban w ater supply
Econom ic analysis
Adaptaions

SLIDE 4

Water use in agricultural irrigation is almost 70%
f total water use amount.
Over use of ground water is also one of major

causes to reduce ground water resource.

Water level declination

Beijing 北京 Shijiazhuang 石家荘 Handan 邯鄲

N S

10 20 30 40 50 1965 1975 1985 1995 2005 Year w ater l evel (m )

Water level declination

Beijing 北京 Shijiazhuang 石家荘 Handan 邯鄲

N S

10 20 30 40 50 1965 1975 1985 1995 2005 Year w ater l evel (m )

Vision I : Human activity is a major reason of water stress, such as over exploitation to limited water resource. Vision I : Human activity is a major reason of water stress, such as over exploitation to limited water resource.