Results 21 to 30 of about 324,903 (339)

Comparative Analysis of Two Machine Learning Algorithms in Predicting Site-Level Net Ecosystem Exchange in Major Biomes

Remote Sensing, 2021
The net ecosystem CO2 exchange (NEE) is a critical parameter for quantifying terrestrial ecosystems and their contributions to the ongoing climate change.
Jianzhao Liu, Yunjiang Zuo, Nannan Wang, Fenghui Yuan, Xinhao Zhu, Lihua Zhang, Jingwei Zhang, Ying Sun, Ziyu Guo, Yuedong Guo, Xia Song, C. Song, Xiaofeng Xu   +12 more
semanticscholar   +1 more source

Seasonal and Inter-Annual Variations in Carbon Dioxide Exchange over an Alpine Grassland in the Eastern Qinghai-Tibetan Plateau. [PDF]

PLoS ONE, 2016
This work analyzed carbon dioxide exchange and its controlling factors over an alpine grassland on the eastern Qinghai-Tibetan Plateau. The main results show that air temperature and photosynthetically active radiation are two dominant factors ...
Lunyu Shang, Yu Zhang, Shihua Lyu, Shaoying Wang   +3 more
doaj   +1 more source

Modelling growing season carbon fluxes at a low-center polygon ecosystem in the Mackenzie River Delta

Arctic Science, 2023
A temporal upscaling study was conducted to estimate net ecosystem exchange (NEE) of carbon dioxide and net methane exchange (NME) for a low-center polygon (LCP) ecosystem in the Mackenzie River Delta, for each of the 11 growing seasons (2009–2019).
June Skeeter, Andreas Christen, Greg Henry   +2 more
doaj   +1 more source

O2:CO2 exchange ratios observed in a cool temperate deciduous forest ecosystem of central Japan [PDF]

Tellus: Series B, Chemical and Physical Meteorology, 2013
Detailed observations of O2:CO2 exchange ratios were conducted in a cool temperate deciduous forest located in central Japan. The exchange ratios of soil respiration and net assimilation were found to be 1.11±0.01 and 1.02±0.03 from soil ...
Shigeyuki Ishidoya, Shohei Murayama, Chikako Takamura, Hiroaki Kondo, Nobuko Saigusa, Daisuke Goto, Shinji Morimoto, Nobuyuki Aoki, Shuji Aoki, Takakiyo Nakazawa   +9 more
doaj   +1 more source

Empirical Models of Respiration and Net Ecosystem Productivity and Their Applications in a Subtropical Coniferous Plantation in China

Atmosphere, 2023
Net ecosystem exchange (NEE), solar radiation (including photosynthetically active radiation PAR), and meteorological parameters were measured in a subtropical coniferous plantation in China during 2013–2016.
Jianhui Bai, Fengting Yang, Mingjie Xu, Huimin Wang   +3 more
doaj   +1 more source

Seasonal and diurnal variation in CO fluxes from an agricultural bioenergy crop [PDF]

Biogeosciences, 2016
Carbon monoxide (CO) is an important reactive trace gas in the atmosphere, while its sources and sinks in the biosphere are poorly understood. Soils are generally considered as a sink of CO due to microbial oxidation processes, while emissions of CO have
M. Pihlatie, Ü. Rannik, S. Haapanala, O. Peltola, N. Shurpali, P. J. Martikainen, S. Lind, N. Hyvönen, P. Virkajärvi, M. Zahniser, I. Mammarella   +10 more
doaj   +1 more source

Factors controlling and variations of CO2 fluxes during the growing season in Gurbantunggut Desert

Ecological Indicators, 2023
Although previous studies have illustrated the variation of CO2 fluxes in different terrestrial ecosystems, more needs to be reported on desert ecosystems.
Gulnur Amar, Ali Mamtimin, YongHui Wang, Yu Wang, JiaCheng Gao, Fan Yang, Meiqi Song, Ailiyaer Aihaiti, Cong Wen, Junjian Liu   +9 more
doaj   +1 more source

Deepened winter snow cover enhances net ecosystem exchange and stabilizes plant community composition and productivity in a temperate grassland

Global Change Biology, 2020
Global warming has greatly altered winter snowfall patterns, and there is a trend towards increasing winter snow in semi‐arid regions in China. Winter snowfall is an important source of water during early spring in these water‐limited ecosystems, and it ...
Ping Li, E. Sayer, Z. Jia, Weixing Liu, Yuntao Wu, Sen Yang, Chengzhang Wang, Lu Yang, Dima Chen, Yongfei Bai, Lingli Liu   +10 more
semanticscholar   +1 more source

Effects of water and nitrogen addition on ecosystem carbon exchange in a meadow steppe. [PDF]

PLoS ONE, 2015
A changing precipitation regime and increasing nitrogen deposition are likely to have profound impacts on arid and semiarid ecosystem C cycling, which is often constrained by the timing and availability of water and nitrogen.
Yunbo Wang, Qi Jiang, Zhiming Yang, Wei Sun, Deli Wang   +4 more
doaj   +1 more source

Effects of Nitrogen Addition on the Drought Susceptibility of the Leymus chinensis Meadow Ecosystem Vary with Drought Duration

Frontiers in Plant Science, 2018
It is not clear yet how extreme drought and nitrogen (N) deposition influence grassland ecosystem functions when they are considered together, especially in complex field conditions.
Baoku Shi, Yunbo Wang, Yunbo Wang, Bo Meng, Shangzhi Zhong, Wei Sun   +5 more
doaj   +1 more source