Results 101 to 110 of about 5,519 (180)

Observations and modeling reveal that heatwaves reduce photosynthesis, plant carbon reserves, and net carbon uptake

Environmental Research Letters
Heatwaves threaten ecosystem carbon balances, yet the mechanisms driving short-term carbon flux responses remain poorly understood. Here, integrating high-frequency eddy covariance (EC) data from 140 global flux tower sites (872 site-years) with detailed
Zelalem A Mekonnen, William J Riley, Christopher J Still, Robert F Grant   +3 more
doaj   +1 more source

Phosphorus limitation on CO2 fertilization effect in tropical forests informed by a coupled biogeochemical model

Forest Ecosystems
Tropical forests store more than half of the world's terrestrial carbon (C) pool and account for one-third of global net primary productivity (NPP). Many terrestrial biosphere models (TBMs) estimate increased productivity in tropical forests throughout ...
Zhuonan Wang, Hanqin Tian, Shufen Pan, Hao Shi, Jia Yang, Naishen Liang, Latif Kalin, Christopher Anderson   +7 more
doaj   +1 more source

Climate change and water use partitioning by different plant functional groups in a grassland on the Tibetan Plateau.

PLoS ONE, 2013
The Tibetan Plateau (TP) is predicted to experience increases in air temperature, increases in snowfall, and decreases in monsoon rains; however, there is currently a paucity of data that examine the ecological responses to such climate changes.
Jia Hu, Kelly A Hopping, Joseph K Bump, Sichang Kang, Julia A Klein   +4 more
doaj   +1 more source

Response of Net Ecosystem Productivity of Three Boreal Forest Stands to Drought [PDF]

, 2018
In 2000-03, continuous eddy covariance measurements of carbon dioxide (CO2) flux were made above mature boreal aspen, black spruce, and jack pine forests in Saskatchewan, Canada, prior to and during a 3-year drought.
Barr, A., Black, T., Gaumont-Guay, D., Griffis, T., Kljun, N., McCaughey, J., Morgenstern, K., Nesic, Z.   +7 more
core  

Maize grown for bioenergy on peat emits twice as much carbon as when grown on mineral soil

GCB Bioenergy
The area of land dedicated to growing maize for bioenergy in the United Kingdom is rapidly expanding. To understand how maize production influences soil carbon (C) dynamics, and whether this is influenced by soil type, we measured net ecosystem exchange (
I. L. Lloyd, R. Morrison, R. P. Grayson, A. M. J. Cumming, B. D'Acunha, M. V. Galdos, C. D. Evans, P. J. Chapman   +7 more
doaj   +1 more source

Analyzing the causes and spatial pattern of the European 2003 carbon flux anomaly using seven models [PDF]

Biogeosciences, 2008
Globally, the year 2003 is associated with one of the largest atmospheric CO₂ rises on record. In the same year, Europe experienced an anomalously strong flux of CO₂ from the land to the atmosphere associated
M. Vetter, G. Churkina, M. Jung, M. Reichstein, S. Zaehle, A. Bondeau, Y. Chen, P. Ciais, F. Feser, A. Freibauer, R. Geyer, C. Jones, D. Papale, J. Tenhunen, E. Tomelleri, K. Trusilova, N. Viovy, M. Heimann   +17 more
doaj  

Modelling and evaluation of net ecosystem productivity and its driving factors in Inner Mongolia

Frontiers in Environmental Science
Net ecosystem productivity (NEP) is a critical indicator for characterizing the carbon cycle dynamics within terrestrial ecosystems. This study employs six different combinations of methods for calculating Net Primary Productivity (NPP) and heterotrophic
Shengjie Cui, Shengjie Cui, Shuixia Zhao, Shuixia Zhao, Chao Li, Yingjie Wu, Yingjie Wu, Tomasz Kolerski, Mengmeng Zhang   +8 more
doaj   +1 more source

Spatiotemporal dynamics of carbon sequestration capacity and its determinants in rubber plantation ecosystems of Hainan Island

Global Ecology and Conservation
Net Ecosystem Productivity (NEP) is a crucial indicator of the carbon sequestration capacity of terrestrial ecosystems. However, the mechanisms underlying the spatiotemporal variations in the carbon sequestration capacity of tropical artificial forest ...
Yinghe An, Zhixiang Wu, Runqing Zhang, Xiang Zhang, Zhenghong Tan, Zhongyi Sun   +5 more
doaj   +1 more source

Characteristics and influencing factors of carbon source/sink variations in the Zoige grassland wetland ecological function zone on the eastern slope of the Tibetan Plateau

Environmental Research Communications
Net ecosystem productivity (NEP) refers to the portion of net primary productivity (NPP) that is available for carbon cycling in terrestrial ecosystems after subtracting photosynthetic carbon consumed by heterotrophic respiration.
Bin Guo, Chao Chen, Yanmei Pang, Yu Luo
doaj   +1 more source

Analysis of the spatiotemporal dynamics of grassland carbon sinks in Xinjiang via the improved CASA model

Ecological Indicators
Accurate assessment of grassland carbon sinks provides scientific data for quantifying the global carbon balance. Currently, methods for precisely calculating NPP (net primary productivity) and NEP (net ecosystem productivity) in arid grasslands are ...
Xuewei Liu, Renping Zhang, Jing Guo, Haoen Xu, Yuhao Miao, Feifei Niu, Zhengjie Gao, Xiaming Yang, Fengqin Xiong, Jianli Zhang   +9 more
doaj   +1 more source