Implications of improved representations of plant respiration in a changing climate.
Implications of improved representations of plant respiration in a changing climate.
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DOI：
10.1038/s41467-017-01774-z
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发表时间：
2017-11-17
影响因子：
16.6
通讯作者：
Malhi Y
中科院分区：
文献类型：
--
作者：
Huntingford C;Atkin OK;Martinez-de la Torre A;Mercado LM;Heskel MA;Harper AB;Bloomfield KJ;O'Sullivan OS;Reich PB;Wythers KR;Butler EE;Chen M;Griffin KL;Meir P;Tjoelker MG;Turnbull MH;Sitch S;Wiltshire A;Malhi Y
陆气交换影响大气CO2。重点一直在描述光合CO2吸收，但呼吸损失较少。新的全球数据集描述上层冠层暗呼吸（RD）和温度的依赖性。这允许表征的基线R d，瞬时温度响应和长期的热驯化效果。在这里，我们显示了全球的影响，这些参数化与全球网格化的土地模式。该模型将RD聚合为全植物呼吸RP，由跨越气候变化模型的不确定性的气象强迫驱动。对于工业化前的估计，新的基准R d增加R p，特别是在热带地区。与新基线相比，修订后的瞬时响应降低了中纬度地区的R p，而适应降低了热带地区的R p，而其他地区则有所增加。根据全球变暖，新的研发估计放大模拟呼吸增加，虽然部分降低驯化。未来的测量将完善如何研发聚集到整个植物呼吸。我们的分析表明，R p可能比现有估计高出30%左右。新的全球上冠层植被呼吸数据集已经可用，其对全球碳循环模型的影响尚不清楚。在这里，作者展示了这些参数化与全球网格土地模型的影响，并报告了显着更高的全球植物呼吸估计。
Land-atmosphere exchanges influence atmospheric CO2. Emphasis has been on describing photosynthetic CO2 uptake, but less on respiration losses. New global datasets describe upper canopy dark respiration (R d) and temperature dependencies. This allows characterisation of baseline R d, instantaneous temperature responses and longer-term thermal acclimation effects. Here we show the global implications of these parameterisations with a global gridded land model. This model aggregates R d to whole-plant respiration R p, driven with meteorological forcings spanning uncertainty across climate change models. For pre-industrial estimates, new baseline R d increases R p and especially in the tropics. Compared to new baseline, revised instantaneous response decreases R p for mid-latitudes, while acclimation lowers this for the tropics with increases elsewhere. Under global warming, new R d estimates amplify modelled respiration increases, although partially lowered by acclimation. Future measurements will refine how R d aggregates to whole-plant respiration. Our analysis suggests R p could be around 30% higher than existing estimates. New global datasets of upper canopy vegetation respiration have become available and their impact on global carbon cycle models is unclear. Here, the authors show the implications of these parameterisations with a global gridded land model and report significantly higher global plant respiration estimates.
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影响因子：
56.9
作者：
Beer, Christian;Reichstein, Markus;Papale, Dario
通讯作者：
Papale, Dario
影响因子：
3.7
作者：
Jung, Martin;Reichstein, Markus;Williams, Christopher
通讯作者：
Williams, Christopher
影响因子：
11.6
作者：
Kattge J;Díaz S;Lavorel S;Prentice IC;Leadley P;Bönisch G;Garnier E;Westoby M;Reich PB;Wright IJ;Cornelissen JH;Violle C;Harrison SP;Van Bodegom PM;Reichstein M;Enquist BJ;Soudzilovskaia NA;Ackerly DD;Anand M;Atkin O;Bahn M;Baker TR;Baldocchi D;Bekker R;Blanco CC;Blonder B;Bond WJ;Bradstock R;Bunker DE;Casanoves F;Cavender-Bares J;Chambers JQ;Chapin FS III;Chave J;Coomes D;Cornwell WK;Craine JM;Dobrin BH;Duarte L;Durka W;Elser J;Esser G;Estiarte M;Fagan WF;Fang J;Fernández-Méndez F;Fidelis A;Finegan B;Flores O;Ford H;Frank D;Freschet GT;Fyllas NM;Gallagher RV;Green WA;Gutierrez AG;Hickler T;Higgins SI;Hodgson JG;Jalili A;Jansen S;Joly CA;Kerkhoff AJ;Kirkup D;Kitajima K;Kleyer M;Klotz S;Knops JM;Kramer K;Kühn I;Kurokawa H;Laughlin D;Lee TD;Leishman M;Lens F;Lenz T;Lewis SL;Lloyd J;Llusià J;Louault F;Ma S;Mahecha MD;Manning P;Massad T;Medlyn BE;Messier J;Moles AT;Müller SC;Nadrowski K;Naeem S;Niinemets Ü;Nöllert S;Nüske A;Ogaya R;Oleksyn J;Onipchenko VG;Onoda Y;Ordoñez J;Overbeck G;Ozinga WA;Patiño S;Paula S;Pausas JG;Peñuelas J;Phillips OL;Pillar V;Poorter H;Poorter L;Poschlod P;Prinzing A;Proulx R;Rammig A;Reinsch S;Reu B;Sack L;Salgado-Negret B;Sardans J;Shiodera S;Shipley B;Siefert A;Sosinski E;Soussana JF;Swaine E;Swenson N;Thompson K;Thornton P;Waldram M;Weiher E;White M;White S;Wright SJ;Yguel B;Zaehle S;Zanne AE;Wirth C
通讯作者：
Wirth C
影响因子：
7.3
作者：
Bernacchi, CJ;Pimentel, C;Long, SP
通讯作者：
Long, SP
影响因子：
1.5
作者：
da Costa, Antonio C. L.;Metcalfe, Daniel B.;Malhi, Yadvinder
通讯作者：
Malhi, Yadvinder