Estimation of Endocarpon pusillum Hedwig carbon budget in the Tengger Desert based on its photosynthetic rate
Estimation of Endocarpon pusillum Hedwig carbon budget in the Tengger Desert based on its photosynthetic rate
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DOI：
10.1007/s11427-013-4526-9
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发表时间：
2013-09-01
影响因子：
9.1
通讯作者：
Wei JiangChun
中科院分区：
文献类型：
--
作者：
Ding LiPing;Zhou QiMing;Wei JiangChun
本研究对中国科学院沙坡头沙漠研究站的内生地衣（Endocarpon pusillum）的光合速率进行了研究，并估算了其对生态系统碳收支的年贡献。采用“Macro-Area below curves”软件SigmaPlot 10.0计算地衣的固碳能力。地衣的总碳收支（I C）磅由光合碳收益（I NP）磅减去呼吸碳损失（I DR）磅得到。由于降水水分对该生态系统的光合作用起着重要作用，因此基于2009 - 2011年3年平均降水数据估算了该站普西兰的年碳收支。结果表明，地衣每年固定14.6 g cm（-2）。结果表明，在腾格里沙漠人工接种地壳地衣不仅有助于减少沙尘暴，而且提供了重要的碳汇，在腾格里沙漠30000 km(2)的范围内固定了438000 t的碳。碳汇可能有助于缓解大气中的温室效应。我们的研究表明，毯状地衣是干旱和半干旱区“生物地毯工程”的优秀候选者。
This study investigated the photosynthetic rate of the lichen Endocarpon pusillum at the Chinese Academy of Sciences Shapotou Desert Research Station and estimated its annual contribution to the carbon budget in the ecosystem. The software SigmaPlot 10.0 with "Macro-Area below curves" was used to calculate the carbon fixation capacity of the lichen. The total carbon budget (I C) pound of the lichen was obtained by subtracting the respiratory carbon loss (I DR) pound from the photosynthetic carbon gain (I NP) pound. Because water from precipitation plays an important role in photosynthesis in this ecosystem, the annual carbon budget of E. pusillum at the station was estimated based on the three-year average precipitation data from 2009 to 2011. Our results indicate that the lichen fixes 14.6 g C m(-2) annually. The results suggest that artificial inoculation of the crust lichen in the Tengger Desert could not only help reduce the sand and dust storms but also offer a significant carbon sink, fixing a total of 438000 t of carbon over the 30000 km(2) of the Tengger Desert. The carbon sink could potentially help mitigate the atmospheric greenhouse effect. Our study suggests that the carpet-like lichen E. pusillum is an excellent candidate for "Bio-carpet Engineering" of arid and semi-arid regions.