Job Recruitment Website - Ranking of immigration countries - Look at what has happened in Dongting Lake area, and analyze the reasons, hazards and corresponding countermeasures.
Look at what has happened in Dongting Lake area, and analyze the reasons, hazards and corresponding countermeasures.
natural cause
It is forbidden to cut down natural forests and plant trees in the middle and upper reaches of the Yangtze River to conserve water and soil and reduce sediment deposition.
man-made causes
Reclaiming land from lakes, shrinking lakes, returning farmland to lakes, and building towns by immigrants.
harm
The flood storage capacity has decreased, and floods have occurred frequently; Affect shipping; Destroy biodiversity
As can be seen from the figure, the lake area of 20 10 is much smaller than that of 1950s. Try to analyze the reasons for this change: due to the over-exploitation of human beings and the reclamation around the lake, the lake area has decreased.
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