MindMap Gallery lake
This is a mind map about lakes, including the causes of formation, factors causing lake shrinkage, environmental benefits, factors affecting lake water salinity, etc.
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lake
Causes
①Evaporation: Evaporation is weak due to low temperatures and high latitudes
② Infiltration: frozen soil is widely spread and infiltration is weak
③River: dense river network
④Terrain: low-lying, poor drainage
⑤Ling flood: There is Ling flood phenomenon
Factors causing lake shrinkage
①Arid climate with little precipitation
②Less runoff injection
③High temperature and strong winds, strong evaporation
④Geological fault seepage
⑤Human activities use water, reclaim land from lakes, and divert water for irrigation
environmental benefits
① Provide water source
②Adjust climate and improve heat island effect
③Provide habitats for animals and plants and maintain biodiversity
④Conducive to flood control and drainage
Adverse effects of lake shrinkage
①The climate becomes drier and the temperature difference increases
② The effect of regulating downstream runoff is reduced, and floods and droughts are increased.
③The ecological environment deteriorates and biodiversity decreases
④ Expansion of salinization
⑤Drinking of groundwater level
Factors affecting lake water salinity
①Precipitation
②Evaporation
③River injection
④River outflow: River outflow will take away the salt and reduce the salinity of the lake water;