Results 21 to 30 of about 142,240 (292)

Penyerapan Karbon Berdasarkan Data Sensing Menggunakan Penghitungan Gross Primary Production

Jurnal Komputer Terapan, 2017
Perubahan iklim dunia saat ini yang disebabkan oleh pemanasan global mengakibatkan dampak negatif bagi manusia. Penyebab pemanasan global adalah meningkatnya asap kendaraan, asap pabrik, pembakaran hutan serta emisi karbon lainnya.
Jamaludin Dwi Laspandi, Sunardi Sunardi, Abdul Fadlil   +2 more
doaj   +2 more sources

Impacts of Heat and Drought on Gross Primary Productivity in China [PDF]

Remote Sensing, 2021
Heat and drought stress, which often occur together, are the main environmental factors limiting the survival and growth of vegetation. Studies on the response of gross primary production (GPP) to extreme climate events such as heat and drought are highly significant for the identification of ecologically vulnerable regions, ecological risk assessments,
Xiufang Zhu, Shizhe Zhang, Tingting Liu, Ying Liu   +3 more
openaire   +2 more sources

Sensitivities of Vegetation Gross Primary Production to Precipitation Frequency in the Northern Hemisphere from 1982 to 2015

Remote Sensing, 2023
Vegetation of the Northern Hemisphere plays a vital role in global ecosystems and the carbon cycle. Variations in precipitation profoundly affect vegetation productivity, plant growth, and species communities.
Shouye Xue, Guocan Wu
doaj   +1 more source

Estimating Carrot Gross Primary Production Using UAV-Based Multispectral Imagery

AgriEngineering, 2023
Gross primary productivity (GPP) is an essential parameter to assess the efficiency of terrestrial ecosystems on carbon transfer. Although GPP is regularly measured with eddy covariance (EC) systems, these are restricted to the tower footprint area, and ...
Angela María Castaño-Marín, Diego Fernando Sánchez-Vívas, Julio Martin Duarte-Carvajalino, Gerardo Antonio Góez-Vinasco, Gustavo Alfonso Araujo-Carrillo   +4 more
doaj   +1 more source

Hydroclimatic extremes contribute to asymmetric trends in ecosystem productivity loss

Communications Earth & Environment, 2023
Gross primary production is the basis of global carbon uptake. Gross primary production losses are often related to hydroclimatic extremes such as droughts and heatwaves, but the trend of such losses driven by hydroclimatic extremes remains unclear ...
Jun Li, Emanuele Bevacqua, Zhaoli Wang, Stephen Sitch, Vivek Arora, Almut Arneth, Atul K. Jain, Daniel Goll, Hanqin Tian, Jakob Zscheischler   +9 more
doaj   +1 more source

Maximum Gross Primary Productivity Dominates the Trend in Gross Primary Productivity in China’s Deciduous Forest Ecosystems

Forests, 2023
The terrestrial gross primary productivity (GPP) has increased over the past two decades. However, the climatic attribution and the physiological and phenological processes that control the trends in the GPP are still unclear. Here, we used remote-sensing-based vegetation GPP and phenology datasets, analyzed the spatial and temporal variation in the ...
Yan Lv, Xiaoyong Li, Wenfeng Chi
openaire   +1 more source

Predicting Gross Primary Productivity in Terrestrial Ecosystems [PDF]

Ecological Applications, 1997
Our goal was to construct a simple, highly aggregated model, driven by easily available data sets, that accurately predicted terrestrial gross primary productivity (GPP; carboxylation plus oxygenation) in diverse environments and ecosystems. Our starting point was a fine-scale, multilayer model of half-hourly canopy processes that has been parametrized
Williams, M., Rastetter, E.B., Fernandes, D.N., Goulden, M.L., Shaver, G.R., Johnson, L.C.   +5 more
openaire   +2 more sources

Gross Primary Production and False Spring: a spatio-temporal analysis [PDF]

, 2020
<p>Phenological information can be obtained from different sources of data. For instance, from remote sensing data or products and from models driven by weather variables. The former typically allows analyzing land surface phenology whereas the latter provide plant phenological information.
Emma Izquierdo-Verdiguier, Raúl Zurita-Milla, Álvaro Moreno-Martinez, Gustau Camps-Valls, Anja Klisch, Clement Atzberger, Steven W. Running   +6 more
openaire   +1 more source

WUE and CO₂ Estimations by Eddy Covariance and Remote Sensing in Different Tropical Biomes

Remote Sensing, 2022
The analysis of gross primary production (GPP) is crucial to better understand CO2 exchanges between terrestrial ecosystems and the atmosphere, while the quantification of water-use efficiency (WUE) allows for the estimation of the compensation between ...
Gabriel B. Costa, Cláudio M. Santos e Silva, Keila R. Mendes, José G. M. dos Santos, Theomar T. A. T. Neves, Alex S. Silva, Thiago R. Rodrigues, Jonh B. Silva, Higo J. Dalmagro, Pedro R. Mutti, Hildo G. G. C. Nunes, Lucas V. Peres, Raoni A. S. Santana, Losany B. Viana, Gabriele V. Almeida, Bergson G. Bezerra, Thiago V. Marques, Rosaria R. Ferreira, Cristiano P. Oliveira, Weber A. Gonçalves, Suany Campos, Maria U. G. Andrade   +21 more
doaj   +1 more source

Impact of temperature and water availability on microwave-derived gross primary production [PDF]

Biogeosciences, 2021
Vegetation optical depth (VOD) from microwave satellite observations has received much attention in global vegetation studies in recent years due to its relationship to vegetation water content and biomass.
I. E. Teubner, I. E. Teubner, M. Forkel, B. Wild, L. Mösinger, W. Dorigo   +5 more
doaj   +1 more source