Boreal ecosystems sequestered more carbon in warmer years

Boreal ecosystems sequestered more carbon in warmer years
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DOI:
10.1029/2006gl025919
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发表时间:
2006-05
影响因子:
5.2
通讯作者:
Jing M. Chen;Baozhang Chen;K. Higuchi;Jane Liu;D. Chan;D. Worthy;P. Tans;A. Black
Jing M. Chen;Baozhang Chen;K. Higuchi;Jane Liu;D. Chan;D. Worthy;P. Tans;A. Black
中科院分区:
地球科学1区
文献类型:
--
作者:
Jing M. Chen;Baozhang Chen;K. Higuchi;Jane Liu;D. Chan;D. Worthy;P. Tans;A. Black

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一个13年(1990-1996年,1999-2004年),每小时的空气CO2记录在加拿大北方的40米高的塔上测量进行了分析,对插值海洋边界层CO2的数据代表的自由对流层以上的塔。在较温暖的年份,行星边界层中的CO2消耗更多,这表明塔的上风陆地面积(103-104平方公里)吸收了更多的碳。在使用一种新的方法来获得光合通量的空气CO2的日变化模式,它被证实,北方生态系统的光合作用增加超过生态系统呼吸在温暖的年份。
A 13‐year (1990–1996, 1999–2004), hourly air CO2 record measured on a 40 m tower in northern Canada is analyzed against interpolated marine boundary layer CO2 data representing the free troposphere above the tower. In warmer years, the planetary boundary layer was more depleted with CO2, suggesting that the land area (103–104 km2) upwind of the tower sequestered more carbon. After using a novel approach to derive the photosynthetic flux from the air CO2 diurnal variation pattern, it is confirmed that boreal ecosystem photosynthesis increased more than ecosystem respiration in warmer years.