陽光、二氧化碳及水份充足情況下,光合作用在樹葉裡頭發生,二氧化碳的碳原子將儲存在樹木裡,並釋出氧氣。520Please respect copyright.PENANAtS1Gpj2sV5520Please respect copyright.PENANAsOLEoR8ScL
520Please respect copyright.PENANAWE094QEJPg
秋天時份,溫度驟降,樹木意識到冬天即將來臨,便啟動落葉機制,以免冬天低溫為樹葉帶來傷害。520Please respect copyright.PENANAzt1JS3vr4g
520Please respect copyright.PENANA7yxa3BHf2d
(圖2)根據這個理念,全球氣侯所導致的溫度提升,將會使綠葉時間延長1-3星期。520Please respect copyright.PENANALDY6RgYnyR520Please respect copyright.PENANAFQ7f5Qk0M7
520Please respect copyright.PENANASDJ6MSsLVJ
但出乎意外的是,實驗及現實證據指出,綠葉時間反而是平均縮短了3-6日(Ref1)。520Please respect copyright.PENANAX3p2S03OCD
520Please respect copyright.PENANAnDDa8Kveo1
(圖3)分析由1948-2015年達434,226項的樹木數據再加上各種實驗,科學家得出以下的解釋。520Please respect copyright.PENANAUI2OzbdusB520Please respect copyright.PENANAS8PYXFSnr5
520Please respect copyright.PENANAlYUBroMHQ8
全球變暖再加上大氣二氧化碳含量上升,樹木的光合代謝率亦因而有所提升。520Please respect copyright.PENANAGDPLOj46FO
520Please respect copyright.PENANAMS4VkBwRiR
光合代謝的過程中,二氧化碳的碳原子會以固體方式儲存在榭木內。520Please respect copyright.PENANAOT8SePki4u
如果固體碳原子到達一定的程度,就算溫度和暖,亦會觸發樹葉變黃及落葉發生。520Please respect copyright.PENANA7Ph8rTLqkU
520Please respect copyright.PENANARgyxfKVcnf
(圖4)圖中展示出兩種導致落葉情況發生的可能性。520Please respect copyright.PENANA2pkUYvejKO520Please respect copyright.PENANAQ4Jgj6ewsG
520Please respect copyright.PENANAExDJzKn3J4
這表示出每一棵樹木均有其轉化二氧化碳至氧氣的限額,並不能夠無窮無盡地吸收二氧化碳。520Please respect copyright.PENANAF3Zl5IQfDT
單純依靠種植樹木意圖來改善全球的氣候變化,實際上亦有一定的限制。520Please respect copyright.PENANAo5cIMeniso
520Please respect copyright.PENANALxh0IcpAGi
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。520Please respect copyright.PENANAQv4vXwdiFj
520Please respect copyright.PENANA9Y56fmyyAH
https://www.instagram.com/potatopigtongue/520Please respect copyright.PENANAiYgw3LUL4E
520Please respect copyright.PENANAtcHSJFjrNM
520Please respect copyright.PENANAWbopb4jmfY
Ref1:https://science.sciencemag.org/content/370/6520/1066?intcmp=trendmd-sci520Please respect copyright.PENANA8jlgQVVBGy