Meteorological Influences on Short-Term Carbon-Water Relationships in Two Forests in Subtropical China
Abstract
:1. Introduction
2. Data and Methods
2.1. Study Sites
2.2. Data and Data Preprocessing
2.3. Statistical Methods
3. Results and Discussion
3.1. Daily Water Use Efficiency
3.2. Meteorological Influences on Daily Water Use Efficiency
3.3. GPP–ET Coupling
3.4. Meteorological Influences on C–W Coupling
3.5. GPP–ET Relationship Based on WUEdt and Coupling Strength r
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Sites | Dinghushan (CN-Din) | Qianyanzhou (CN-Qia) |
---|---|---|
Vegetation type | Evergreen broadleaved forest | Evergreen coniferous forest |
Latitude (°N) | 23.17 | 26.74 |
Longitude (°W) | 112.53 | 115.06 |
Elevation (m) | 300 | 102 |
Mean annual temperature (°C) | 19.6 | 19.0 |
Mean annual precipitation (mm) | 1618.1 | 1466.8 |
Leaf area index (LAI, m2/m2) | 4.0 | 3.5 |
Mean daytime solar radiation (W m−2) in summer | 555.6 | 592.0 |
Mean daytime air temperature (°C) in summer | 29.1 | 31.6 |
Mean daytime vapor pressure deficit (hPar) in summer | 14.7 | 22.4 |
Mean daytime soil water content (%) in summer | 21.26 | 12.43 |
Dominant species | Pinus massoniana Lam, Pinus elliottii Engelm, Cunninghamia lanceolate et al. | Schima superb, Castanea henry, Pinus massoniana Lamb et al. |
Frequency | Half-hour | Half-hour |
Time series | 2003–2005 | 2003–2005 |
Broadleaved Forest | Coniferous Forest | |
---|---|---|
WUE (mg CO2 g−1 H2O) | 7.387 ± 1.385 | 9.014 ± 3.466 |
C–W coupling (r) | 0.551 ± 0.236 | 0.585 ± 0.254 |
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Pan, J.; Liu, J.; Yang, M.; Wang, R. Meteorological Influences on Short-Term Carbon-Water Relationships in Two Forests in Subtropical China. Atmosphere 2023, 14, 457. https://doi.org/10.3390/atmos14030457
Pan J, Liu J, Yang M, Wang R. Meteorological Influences on Short-Term Carbon-Water Relationships in Two Forests in Subtropical China. Atmosphere. 2023; 14(3):457. https://doi.org/10.3390/atmos14030457
Chicago/Turabian StylePan, Jihua, Jane Liu, Mengmiao Yang, and Rong Wang. 2023. "Meteorological Influences on Short-Term Carbon-Water Relationships in Two Forests in Subtropical China" Atmosphere 14, no. 3: 457. https://doi.org/10.3390/atmos14030457