共 50 条
No carbon storage in growth-limited trees in a semi-arid woodland
被引:21
|作者:
Thompson, R. Alexander
[1
]
Adams, Henry D.
[1
]
Breshears, David D.
[2
]
Collins, Adam D.
[3
]
Dickman, L. Turin
[3
]
Grossiord, Charlotte
[4
,5
]
Manrique-Alba, Angela
[6
]
Peltier, Drew M.
[7
]
Ryan, Michael G.
[8
,9
]
Trowbridge, Amy M.
[10
]
McDowell, Nate G.
[11
,12
]
机构:
[1] Washington State Univ, Sch Environm, Pullman, WA 99164 USA
[2] Univ Arizona, Sch Nat Resources & Environm, Tucson, AZ 85719 USA
[3] Los Alamos Natl Lab, Earth & Environm Sci Div, Los Alamos, NM USA
[4] Ecole Polytech Fed Lausanne, Sch Architecture Civil & Environm Engn, Plant Ecol Res Lab PERL, CH-1015 Lausanne, Switzerland
[5] Swiss Fed Inst Forest Snow & Landscape WSL, Community Ecol Unit, CH-1015 Lausanne, Switzerland
[6] Estn Expt Aula Dei EEAD CSIC, Zaragoza, Spain
[7] No Arizona Univ, Ctr Ecosyst Sci & Soc, Flagstaff, AZ 86011 USA
[8] Colorado State Univ, Dept Ecosyst Sci & Sustainabil, Ft Collins, CO 80523 USA
[9] US Forest Serv, USDA, Rocky Mt Res Stn, Ft Collins, CO 80526 USA
[10] Univ Wisconsin, Dept Entomol, Madison, WI 53706 USA
[11] Pacific Northwest Natl Lab, Atmospher Sci & Global Change Div, POB 999, Richland, WA 99352 USA
[12] Washington State Univ, Sch Biol Sci, POB 644236, Pullman, WA 99164 USA
基金:
美国食品与农业研究所;
瑞士国家科学基金会;
关键词:
CARBOHYDRATE DYNAMICS;
DIE-OFF;
DROUGHT;
LIMITATION;
ALLOCATION;
MORTALITY;
SEEDLINGS;
PLANTS;
D O I:
10.1038/s41467-023-37577-8
中图分类号:
O [数理科学和化学];
P [天文学、地球科学];
Q [生物科学];
N [自然科学总论];
学科分类号:
07 ;
0710 ;
09 ;
摘要:
Plant survival depends on a balance between carbon supply and demand. When carbon supply becomes limited, plants buffer demand by using stored carbohydrates (sugar and starch). During drought, NSCs (non-structural carbohydrates) may accumulate if growth stops before photosynthesis. This expectation is pervasive, yet few studies have combined simultaneous measurements of drought, photosynthesis, growth, and carbon storage to test this. Using a field experiment with mature trees in a semi-arid woodland, we show that growth and photosynthesis slow in parallel as psi(pd) declines, preventing carbon storage in two species of conifer (J. monosperma and P. edulis). During experimental drought, growth and photosynthesis were frequently co-limited. Our results point to an alternative perspective on how plants use carbon that views growth and photosynthesis as independent processes both regulated by water availability.
引用
收藏
页数:11
相关论文