Results 31 to 40 of about 24,126 (256)

Uncertainties of gross primary productivity of Chinese grasslands based on multi-source estimation

Frontiers in Environmental Science, 2022
Gross primary productivity (GPP) is an important parameter in the carbon cycle and climate change studies. The results of GPP fluxes estimated based on multiple models or remote sensing vary widely, but current studies of GPP in Chinese grasslands tend ...
Panxing He, Xiaoliang Ma, Xiaoliang Ma, Zhiming Han, Xiaoyu Meng, Zongjiu Sun   +5 more
doaj   +1 more source

Global cropland monthly gross primary production in the year 2000 [PDF]

Biogeosciences, 2014
Abstract. Croplands cover about 12% of the ice-free terrestrial land surface. Compared with natural ecosystems, croplands have distinct characteristics due to anthropogenic influences. Their global gross primary production (GPP) is not well constrained and estimates vary between 8.2 and 14.2 Pg C yr−1.
Chen, T., van der Werf, G.R., Gobron, N., Moors, E.J., Dolman, A.J.   +4 more
openaire   +4 more sources

Ozone vegetation damage effects on gross primary productivity in the United States [PDF]

Atmospheric Chemistry and Physics, 2014
We apply an off-line process-based vegetation model (the Yale Interactive Terrestrial Biosphere model) to assess the impacts of ozone (O3) vegetation damage on gross primary productivity (GPP) in the United States during the past decade (1998–2007).
X. Yue, N. Unger
doaj   +1 more source

Effects of Aerosols on Gross Primary Production from Ecosystems to the Globe

Remote Sensing, 2022
Aerosols affect the gross primary productivity (GPP) of plants by absorbing and scattering solar radiation. However, it is still an open question whether and to what extent the effects of aerosol on the diffuse fraction (Df) can enhance GPP globally.
Yamei Shu, Shuguang Liu, Zhao Wang, Jingfeng Xiao, Yi Shi, Xi Peng, Haiqiang Gao, Yingping Wang, Wenping Yuan, Wende Yan, Ying Ning, Qinyuan Li   +11 more
openaire   +2 more sources

Improving model estimates of gross primary production [PDF]

Eos, Transactions American Geophysical Union, 2011
Balancing the global carbon budget is a daunting task complicated by the fact that even the most essential values elude direct observation. Gross primary production, the amount of carbon used by terrestrial vegetation to fuel its annual growth, is often estimated by extrapolation from observations using climate models, including the Community Land ...
openaire   +1 more source

Mapping the “Supply–Demand–Flow” of Ecosystem Services for Ecosystem Management in China

Advanced Science, EarlyView.
This study develops a “supply–demand–flow” framework clarifies how ecosystem services move between regions by distinguishing potential and actual supply and demand. Using integrated biophysical–socioeconomic modeling, nine services in China were mapped.
Yikun Zhang, Yadong Yang, Yongsheng Wang, Guirui Yu   +3 more
wiley   +1 more source

Extreme events in gross primary production: a characterization across continents [PDF]

Biogeosciences, 2014
Abstract. Climate extremes can affect the functioning of terrestrial ecosystems, for instance via a reduction of the photosynthetic capacity or alterations of respiratory processes. Yet the dominant regional and seasonal effects of hydrometeorological extremes are still not well documented.
J. Zscheischler, M. Reichstein, S. Harmeling, A. Rammig, E. Tomelleri, M. D. Mahecha   +5 more
openaire   +6 more sources

Better representation of vegetation phenology improves estimations of annual gross primary productivity

Ecological Informatics
Carbon uptake by vegetation plays a vital role in the global carbon cycle. Annual gross primary productivity (AGPP) represents the total amount of carbon compounds produced by vegetation photosynthesis over a year and is a crucial metric for quantifying ...
Hanliang Gui, Qinchuan Xin, Xuewen Zhou, Wei Wu, Zhenhua Xiong   +4 more
doaj   +1 more source

Improving the Estimation of Gross Primary Productivity across Global Biomes by Modeling Light Use Efficiency through Machine Learning

Remote Sensing, 2023
Estimating gross primary productivity (GPP) is important for simulating the subsequent carbon cycle elements and assessing the capacity of terrestrial ecosystems to support the sustainable development of human society.
Daqian Kong, Dekun Yuan, Haojie Li, Jiahua Zhang, Shanshan Yang, Yue Li, Yun Bai, Sha Zhang   +7 more
doaj   +1 more source

Hydrogen (H2) Recovery From Hydrogen Sulfide (H2S): Current Technologies, Challenges, and Future Outlook

Advanced Science, EarlyView.
ABSTRACT Hydrogen sulfide (H2S) can be transformed into hydrogen (H2) through several chemical and catalytic processes, offering a promising route for both waste treatment and clean H2 production. This colorless, flammable, and toxic gas is found abundantly in swamps, volcanoes, hot springs, sewages, other natural gas fields, and even in refineries and
Divyesh Cirikonda, Astrid Campos‐Mata, Sehmus Ozden, Shreyasi Chattopadhyay, Pulickel M. Ajayan   +4 more
wiley   +1 more source