Gross primary productivity (GPP) is a key component of land鈥揳tmospheric carbon exchange. Reliable calculation of regional/global \\{GPP\\} is crucial for understanding the response of terrestrial ecosystems to climate change and human activity. In recent years, many light use efficiency (LUE) ...
Given the above-mentioned issues, in this study, we optimized the original P model, mainly the calculation of water stress factors, to generate a new global GPP dataset from 1981 to 2020. Before calculating GPP globally, the effectiveness of 5 water stress factors integrated into the P model ...
www.nature.com/scientificreports OPEN Oxygen isotope anomaly in Received: 19 April 2017 Accepted: 15 September 2017 Published: xx xx xxxx tropospheric CO2 and implications for CO2 residence time in the atmosphere and gross primary productivity Mao-Chang Liang1,2, Sasadhar Mahata1, Amzad H. ...
The calculation of a country’s GDP encompasses all private and public consumption, government outlays, investments, additions to private inventories, paid-in construction costs, and the foreign balance of trade. Exports are added to the value and imports are subtracted.1 Of all the components th...
VPD has a significant impact on the daily average Reco and GPP during the observation period, especially during the growing season (p < 0.01). From the calculation formula, it can be observed that VPD is more influenced by air temperature, so the relationship between VPD and temperature ...
Calculation shows that this shift in the λ value introduces a difference of 0.042 ± 0.006‰ (= (0.52393–0.5229) × 41.2‰, where 41.2‰ is the value of 18α − 1 at 25 °C) in Δ17O values between the two labs. ureAd dvdailutieosnaarlley,saulmiqmuoatrsi...
Gross primary production (GPP) of vegetation is the first and important flux of the terrestrial carbon cycle, and there is no direct measurement technique for GPP at ecosystem and landscape scales. A number of satellite-based Light Use Efficiency (LUE) models or Production Efficiency Models (PEM...
147K Learn the definition of gross domestic product (GDP) and review types and examples. Examine the four components of GDP and different approaches to GDP calculation. Related to this Question Explore our homework questions and answers library ...
Gross primary productivity is the amount of carbon fixed during photosynthesis by all producers in the ecosystem. Sun-induced fluorescence (SIF) remote sensing information has recently been widely used to monitor GPP to make important progress (Guanter et al., 2014; Sun et al., 2017; Zhang et...
2.3.2. Calculation of vegetation indices We tested five commonly applied VIs sensitive to different properties of vegetation canopies. As biomass sensitive indices, we evaluated the normalized different VIs, NDVI, (Rouse et al., 1973), and the enhanced vegetation index, EVI, (Huete et al., 200...