The influence of altitude
(1) Natural system: Glacial lakes have expanded in scope and increased in number; Frozen for many years
The unstable state of land in soil area increases, and mudslides and avalanches appear in mountainous areas; north
The polar and Antarctic ecosystems have changed, including those in sea ice.
Biological communities and carnivorous ecosystems at the high end of the food chain.
(2) Hydrological system: In many rivers replenished by glaciers and snow,
Runoff and maximum runoff increased in early spring; Lakes and rivers in many areas have changed.
Warm, has an impact on the thermal structure and water quality.
(3) Terrestrial biological system: Trees produce new leaves, bird migration and spawn.
The occurrence time of spring-specific phenomena is ahead of schedule; The geographical distribution of animal and plant species has two directions.
Polar and high altitude areas; In many areas, the vegetation in spring "turns green" in advance and changes.
Warm weather leads to a prolonged growing season.
(4) Marine and freshwater biological systems: algae and plankton in the high-latitude ocean.
The geographical distribution of animals and fish has changed; Algae and Algae in High Latitude and Alpine Lakes
Increased zooplankton; The geographical distribution of fish in the river changes and migrates early.
Migration. The increase of man-made carbon emissions leads to the intensification of ocean acidification,
At the average pH value
It has dropped by 0.
1 unit.
-the first paragraph.
Write down the measures at the back. It's all over the internet. You can look for it.