6 - 森林伐採

森林伐採 6
Set 2 www.climatefresk.org 6 森林伐採とは森林の 回復力を 超えて 木を伐採したり燃やしたり することである 森林伐採の 80% は農業の拡大に起因している

1
Cause

農業

農業

Deforestation is due for 80% to agriculture. It can be considered as a human activity or as a consequence of agriculture of both.

1
Consequence

CO2排出量

森林伐採

It's written on card 7!

5
Other possible causes

人間活動

人間活動

Deforestation can be considered either as a human activity, or as a consequence of agriculture, or both.
産業

産業

This link is possible for wood-consuming industries. However, wood used by a factory in a sustainably managed forest would not be considered as deforestation.
住宅・建築

住宅・建築

It can be said that heating buildings with wood is in part responsible for deforestation, but it is not significant. Neither is building a major cause of deforestation. Agriculture is the main cause of deforestation, way in front of buildings and their usage.
交通運輸

交通運輸

Road construction sometimes requires deforestation, but the one-dimensional aspect of the road makes it almost negligible compared to deforestation linked to agriculture.
森林火災

森林火災

Deforestation is partly done by burning the forest, which can then degenerate into uncontrolled fire. This is what happened in the summer of 2019 in the Amazon and Australia.

7
Other possible consequences

炭素吸収源

森林伐採

Participants often think that deforestation reduces carbon sinks. In reality, the impact is minimal because deforested areas represent a very small part of the total forest area. Moreover, a mature forest has reached its equilibrium and no longer absorbs carbon. Therefore, as mainly mature forests are deforested, this does not impact carbon sinks. On the other hand, the amount CO2 released is very high.
放射強制力

森林伐採

水循環の変動

森林伐採

Deforestation can perturb local precipitation.
陸上生物多様性

森林伐採

川の氾濫

森林伐採

Vegetation retains water. Cutting it down can lead to flooding.
干ばつ

森林伐採

Deforestation can be the direct cause of droughts because trees stock a lot of water. If they are cut down, they no longer play their part as humidity regulators.
森林火災

森林伐採

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