Results 31 to 40 of about 142,240 (292)

Comparison of Machine Learning Methods to Up-Scale Gross Primary Production

open access: yesRemote Sensing, 2021
Eddy covariance observation is an applicable way to obtain accurate and continuous carbon flux at flux tower sites, while remote sensing technology could estimate carbon exchange and carbon storage at regional and global scales effectively.
Tao Yu, Qiang Zhang, Rui Sun
doaj   +1 more source

Net primary production of forests: a constant fraction of gross primary production? [PDF]

open access: yesTree Physiology, 1998
Considerable progress has been made in our ability to model and measure annual gross primary production (GPP) by terrestrial vegetation. But challenges remain in estimating maintenance respiration (R(m)) and net primary production (NPP). To search for possible common relationships, we assembled annual carbon budgets from six evergreen and one deciduous
R. H., Waring   +2 more
openaire   +2 more sources

High spatial resolution vegetation gross primary production product: Algorithm and validation

open access: yesScience of Remote Sensing, 2022
Vegetation gross primary production (GPP) in terrestrial ecosystems is a key element of the carbon cycle, and its estimation highly determines the accuracy of carbon budget assessments.
Xiaojuan Huang   +7 more
doaj   +1 more source

Global gross primary production from vegetation photosynthesis model for 2017-2019

open access: yes, 2021
This dataset contains 8-day temporal resolution, 500m spatial resolution gross primary production (GPP) estimation from vegetation photosynthesis model (VPM) for the entire globe during 2017-2019.
Xiao, Xiangming   +7 more
core   +1 more source

Soil water retention and gross primary productivity in the Zábrod area in the Šumava Mts.

open access: yesSoil and Water Research, 2008
The synergy between the hydrologic extremes, plant transpiration, gross primary productivity, and soil water retention was studied in the experimental area Zábrod - Meadow in the Šumava Mts.
Miloslav Šír   +4 more
doaj   +1 more source

Effects of Sediment Characteristics on Carbon Dioxide Fluxes Based on Interacting Factors in Unvegetated Tidal Flats

open access: yesFrontiers in Marine Science, 2021
The contribution of unvegetated tidal flats to global net primary production is comparable to that of some vegetated coastal habitats. However, compared to carbon flux regulating factors in vegetated habitats, those in unvegetated tidal flats are not ...
Wei-Jen Lin   +7 more
doaj   +1 more source

Heatwave effects on gross primary production of northern mid-latitude ecosystems

open access: yesEnvironmental Research Letters, 2020
Heatwave events are expected to become more frequent and intense in the mid-latitudes of the Northern Hemisphere in the future. However, our knowledge of the impacts of these extreme temperature events on ecosystem functions is still limited.
Hang Xu, Jingfeng Xiao, Zhiqiang Zhang
doaj   +1 more source

Remote sensing-based estimation of gross primary production in a subalpine grassland [PDF]

open access: yesBiogeosciences, 2012
This study investigates the performances in a terrestrial ecosystem of gross primary production (GPP) estimation of a suite of spectral vegetation indexes (VIs) that can be computed from currently orbiting platforms.
M. Rossini   +10 more
doaj   +1 more source

Growth peak of vegetation and its response to drought on the Mongolian Plateau

open access: yesEcological Indicators, 2022
Global change in recent decades has caused severe degradation of grassland ecosystems in arid and semi-arid regions in the world. In the context of global change, the maximum gross primary production (GPPmax) and its response to drought on the Mongolian ...
Yu Bai, Shenggong Li
doaj   +1 more source

A Broadband Green-Red Vegetation Index for Monitoring Gross Primary Production Phenology

open access: yesJournal of Remote Sensing, 2022
The chlorophyll/carotenoid index (CCI) is increasingly used for remotely tracking the phenology of photosynthesis. However, CCI is restricted to few satellites incorporating the 531 nm band.
Gaofei Yin   +4 more
doaj   +1 more source

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