FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3087726241> ?p ?o ?g. }

• W3087726241 endingPage "2857" @default.
• W3087726241 startingPage "2843" @default.
• W3087726241 abstract "Abstract. The carbon cycle of tropical terrestrial vegetation plays a vital role in the storage and exchange of atmospheric CO2. But large uncertainties surround the impacts of land-use change emissions, climate warming, the frequency of droughts, and CO2 fertilization. This culminates in poorly quantified carbon stocks and carbon fluxes even for the major ecosystems of Africa (savannas and tropical evergreen forests). Contributors to this uncertainty are the sparsity of (micro-)meteorological observations across Africa's vast land area, a lack of sufficient ground-based observation networks and validation data for CO2, and incomplete representation of important processes in numerical models. In this study, we therefore turn to two remotely sensed vegetation products that have been shown to correlate highly with gross primary production (GPP): sun-induced fluorescence (SIF) and near-infrared reflectance of vegetation (NIRv). The former is available from an updated product that we recently published (Sun-Induced Fluorescence of Terrestrial Ecosystems Retrieval – SIFTER v2), which specifically improves retrievals in tropical environments. A comparison against flux tower observations of daytime-partitioned net ecosystem exchange from six major biomes in Africa shows that SIF and NIRv reproduce the seasonal patterns of GPP well, resulting in correlation coefficients of >0.9 (N=12 months, four sites) over savannas in the Northern and Southern hemispheres. These coefficients are slightly higher than for the widely used Max Planck Institute for Biogeochemistry (MPI-BGC) GPP products and enhanced vegetation index (EVI). Similarly to SIF signals in the neighboring Amazon, peak productivity occurs in the wet season coinciding with peak soil moisture and is followed by an initial decline during the early dry season, which reverses when light availability peaks. This suggests similar leaf dynamics are at play. Spatially, SIF and NIRv show a strong linear relation (R>0.9; N≥250 pixels) with multi-year MPI-BGC GPP even within single biomes. Both MPI-BGC GPP and the EVI show saturation relative to peak NIRv and SIF signals during high-productivity months, which suggests that GPP in the most productive regions of Africa might be larger than suggested." @default.
• W3087726241 created "2020-09-25" @default.
• W3087726241 creator A5003064295 @default.
• W3087726241 creator A5010384111 @default.
• W3087726241 creator A5013783680 @default.
• W3087726241 creator A5024765691 @default.
• W3087726241 creator A5035922506 @default.
• W3087726241 creator A5050366917 @default.
• W3087726241 creator A5071349296 @default.
• W3087726241 creator A5088459720 @default.
• W3087726241 creator A5089648479 @default.
• W3087726241 date "2021-05-10" @default.
• W3087726241 modified "2023-10-16" @default.
• W3087726241 title "Sun-induced fluorescence and near-infrared reflectance of vegetation track the seasonal dynamics of gross primary production over Africa" @default.
• W3087726241 cites W1896386811 @default.
• W3087726241 cites W1968148624 @default.
• W3087726241 cites W1974110440 @default.
• W3087726241 cites W1978252675 @default.
• W3087726241 cites W1988743541 @default.
• W3087726241 cites W1999317135 @default.
• W3087726241 cites W2011710597 @default.
• W3087726241 cites W2019623635 @default.
• W3087726241 cites W2022934840 @default.
• W3087726241 cites W2040300188 @default.
• W3087726241 cites W2040984293 @default.
• W3087726241 cites W2046838287 @default.
• W3087726241 cites W2050648603 @default.
• W3087726241 cites W2052648234 @default.
• W3087726241 cites W2070655631 @default.
• W3087726241 cites W2072139589 @default.
• W3087726241 cites W2072490792 @default.
• W3087726241 cites W2079272931 @default.
• W3087726241 cites W2086823339 @default.
• W3087726241 cites W2094278312 @default.
• W3087726241 cites W2102793720 @default.
• W3087726241 cites W2103775154 @default.
• W3087726241 cites W2104482771 @default.
• W3087726241 cites W2106501733 @default.
• W3087726241 cites W2106609694 @default.
• W3087726241 cites W2107284686 @default.
• W3087726241 cites W2108789883 @default.
• W3087726241 cites W2109542058 @default.
• W3087726241 cites W2113410727 @default.
• W3087726241 cites W2122220147 @default.
• W3087726241 cites W2124437404 @default.
• W3087726241 cites W2126479957 @default.
• W3087726241 cites W2126559941 @default.
• W3087726241 cites W2130686417 @default.
• W3087726241 cites W2138019226 @default.
• W3087726241 cites W2138999976 @default.
• W3087726241 cites W2143170001 @default.
• W3087726241 cites W2154700052 @default.
• W3087726241 cites W2155138877 @default.
• W3087726241 cites W2159675452 @default.
• W3087726241 cites W2337818669 @default.
• W3087726241 cites W2338049369 @default.
• W3087726241 cites W2407316124 @default.
• W3087726241 cites W2500807507 @default.
• W3087726241 cites W2509132632 @default.
• W3087726241 cites W2525892670 @default.
• W3087726241 cites W2578763203 @default.
• W3087726241 cites W2590592654 @default.
• W3087726241 cites W2598579132 @default.
• W3087726241 cites W2603028033 @default.
• W3087726241 cites W2748578445 @default.
• W3087726241 cites W2762155383 @default.
• W3087726241 cites W2780476130 @default.
• W3087726241 cites W2803001420 @default.
• W3087726241 cites W2886397182 @default.
• W3087726241 cites W2888816384 @default.
• W3087726241 cites W2895318950 @default.
• W3087726241 cites W2895836386 @default.
• W3087726241 cites W2897608750 @default.
• W3087726241 cites W2898255847 @default.
• W3087726241 cites W2919011764 @default.
• W3087726241 cites W2922141434 @default.
• W3087726241 cites W2945782047 @default.
• W3087726241 cites W2964460232 @default.
• W3087726241 cites W2966160952 @default.
• W3087726241 cites W2966594090 @default.
• W3087726241 cites W2968631756 @default.
• W3087726241 cites W2979653715 @default.
• W3087726241 cites W2979661794 @default.
• W3087726241 cites W2980844297 @default.
• W3087726241 cites W2994961587 @default.
• W3087726241 cites W2998139469 @default.
• W3087726241 cites W3002322112 @default.
• W3087726241 cites W3010734168 @default.
• W3087726241 cites W3020753057 @default.
• W3087726241 cites W3035404833 @default.
• W3087726241 cites W3040739689 @default.
• W3087726241 cites W4237638253 @default.
• W3087726241 cites W627777417 @default.
• W3087726241 doi "https://doi.org/10.5194/bg-18-2843-2021" @default.
• W3087726241 hasPublicationYear "2021" @default.
• W3087726241 type Work @default.
• W3087726241 sameAs 3087726241 @default.
• W3087726241 citedByCount "11" @default.

• next