Diurnal gas exhcnage data.zipPhotosynthesis-CO2 curves.zip

Field experiments were conducted in the tropical rainforest ecosystems at the Xishuangbanna Tropical Botanical Garden of the Chinese Academy of Sciences (XTBG), situated at the northern edge of the Asian tropical zone (21°41′N, 101°25′E, 580 m a.s.l.). In March 2021, we conducted measurements on the canopy tops of mature leaves from five dominant tree species at XTBG. We utilized a portable gas-exchange and chlorophyll fluorescence system (GFS-3000 and PAM Fluorometer 3050-F, Heinz Walz GmbH, Effeltrich, Germany) to gather data. Following that, in January 2023, we conducted measurements on four species, including one additional species not included in the 2021 experiment.
Year
Tree species
CTFS code
Foliage
Tleaf for An/Ci curve (oC)
January
March
XTBG 2021
Syzygium polypetaloideum
Syzypo
Evergreen
15–40
NA
6
Ormosia henryi
Ormohe
Evergreen
15–40
NA
6
Elaeocarpus hainanensis
Elaeha
Evergreen
15–40
NA
6
Ficus tinctoria
Ficuti
Evergreen
15–40
NA
6
Tabebuia heterophylla
Tabehe
Evergreen
15–40
NA
6
2023
Elaeocarpus hainanensis
Elaeha
Evergreen
15–30
4
NA

Senna siamea
Sennsi
Evergreen
15–30
4
NA

Syzygium polypetaloideum
Syzypo
Evergreen
15–30
4
NA

Ficus tinctoria
Ficuti
Evergreen
15–30
4
NA