Abstract
Key message
Transpiration of urban Pinus tabulaeformis was strongly controlled by leaf stomata and its positive response to leaf water potential and whole-tree hydraulic conductance during soil droughts.
Abstract
Many studies have elucidated the response of urban tree transpiration to environmental factors, but little is known about how soil water alters canopy conductance (Gc), leaf water potential, the whole-tree hydraulic conductance (K), and their influences on canopy transpiration (Ec). In this study, sap flow, leaf water potential, and environmental factors were measured in a 60-year-old Pinus tabulaeformis plantation in a semi-arid urban environment of northern China. We found Ec, Gc, and K (0.11 ± 0.01 mm d–1, 0.13 ± 0.01 mm s–1, and 0.007 ± 0.001 kgm–2 h–1 MPa–1, respectively) under soil water-stressed conditions were significantly lower than that (0.32 ± 0.01 mm d–1, 0.34 ± 0.01 mm s–1, and 0.042 ± 0.004 kg m–2 h–1 MPa–1, respectively) under non-water-stressed conditions (p < 0.05). Leaf water potential at predawn and midday (Ψm) and the hydrodynamic water potential gradient from roots to shoots was relatively constant, with averages of –1.25 ± 0.26 MPa, –1.87 ± 0.19 MPa, and 0.62 ± 0.20 MPa, respectively. Gc was negatively related to vapor pressure deficit (VPD) but was positively correlated to soil volume water content (VWC) and wind speed when soil water was relatively sufficient. As soil drought progressed, Gc was more impacted by VWC and was negatively associated with air temperature to reduce water loss, but it was positively related to Ψm and K. These findings indicated that urban P. tabulaeformis could control transpiration by strict stomatal regulation and maintain a constant water potential gradient to avoid a hydraulic breakdown during soil droughts.
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References
Boggs JL, Sun G (2011) Urbanization alters watershed hydrology in the Piedmont of North Carolina. Ecohydrology 4:256–264. https://doi.org/10.1002/eco.198
Brodribb TJ, Holbrook NM (2004) Diurnal depression of leaf hydraulic conductance in a tropical tree species. Plant Cell Environ 27:820–827. https://doi.org/10.1111/j.1365-3040.2004.01188.x
Campbell GS, Norman JM (1998) An Introduction to Environmental Biophysics, 2nd edn. Springer-Verlag, New York
Cao S, Chen L, Shankman D, Wang C, Wang X, Zhang H (2011) Excessive reliance on afforestation in China’s arid and semi-arid regions: lessons in ecological restoration. Earth Sci Rev 104:240–245. https://doi.org/10.1016/j.earscirev.2010.11.002
Chang X, Zhao W, Liu H, Wei X, Liu B, He Z (2014) Qinghai spruce (Picea crassifolia) forest transpiration and canopy conductance in the upper Heihe River Basin of arid northwestern China. Agric for Meteorol 198:209–220. https://doi.org/10.1016/j.agrformet.2014.08.015
Chen D, Wang Y, Liu S, Wei X, Wang X (2014) Response of relative sap flow to meteorological factors under different soil moisture conditions in rainfed jujube (Ziziphus jujuba Mill.) plantations in semiarid Northwest China. Agric Water Manag 136:23–33. https://doi.org/10.1016/j.agwat.2014.01.001
Chen S, Chen Z, Xu H, Kong Z, Xu Z, Liu Q, Liu P, Zhang Z (2022) Biophysical regulations of transpiration and water use strategy in a mature Chinese pine (Pinus tabulaeformis) forest in a semiarid urban environment. Hydrol Process 36:e14485. https://doi.org/10.1002/hyp.14485
Chen Z, Zhang Z, Chen L, Cai Y, Zhang H, Lou J, Xu Z, Xu H, Song C (2020a) Sparse Pinus tabuliformis stands have higher canopy transpiration than dense stands three decades after thinning. Forests 11:70. https://doi.org/10.3390/f11010070
Chen Z, Zhang Z, Sun G, Chen L, Xu H, Chen S (2020b) Biophysical controls on nocturnal sap flow in plantation forests in a semi-arid region of northern China. Agric for Meteorol 284:107904. https://doi.org/10.1016/j.agrformet.2020.107904
Choat B, Jansen S, Brodribb TJ, Cochard H, Delzon S, Bhaskar R, Bucci SJ, Field TS, Gleason SM, Hacke UG, Jacobsen AL, Lens F, Maherali H, Martínez-Vilalta J, Mayr S, Mencuccini M, Mitchell PJ, Nardini A, Pittermann J, Pratt RB, Sperry JS, Westoby M, Wright IJ, Zanne AE (2012) Global convergence in the vulnerability of forests to drought. Nature 491:752–755. https://doi.org/10.1038/nature11688
Cochard H, Bréda N, Granier A (1996) Whole tree hydraulic conductance and water loss regulation in Quercus during drought: evidence for stomatal control of embolism? Ann Sci 53:197–206. https://doi.org/10.1051/forest:19960203
Dang H, Zhang X, Han H, Chen S, Li M (2021) Water use by Chinese pine is less conservative but more closely regulated than in Mongolian Scots pine in a plantation forest, on sandy soil, in a semi-arid climate. Front Plant Sci 12:1–17. https://doi.org/10.3389/fpls.2021.635022
Di N, Xi B, Clothier B, Wang Y, Li G, Jia L (2019) Diurnal and nocturnal transpiration behaviors and their responses to groundwater-table fluctuations and meteorological factors of Populus tomentosa in the North China Plain. For Ecol Manag 448:445–456. https://doi.org/10.1016/j.foreco.2019.06.009
Eller CB, Rowland L, Mencuccini M, Rosas T, Williams K, Harper A, Medlyn BE, Wagner Y, Klein T, Teodoro GS, Oliveira RS, Matos IS, Rosado BHP, Fuchs K, Wohlfahrt G, Montagnani L, Meir P, Sitch S, Cox PM (2020) Stomatal optimization based on xylem hydraulics (SOX) improves land surface model simulation of vegetation responses to climate. New Phytol 226:1622–1637. https://doi.org/10.1111/nph.16419
Ewers BE, Oren R (2000) Analyses of assumptions and errors in the calculation of stomatal conductance from sap flux measurements. Tree Physiol 20:579–589. https://doi.org/10.1093/treephys/20.9.579
Fisher RA, Williams M, Do Vale RL, Da Costa AL, Meir P (2006) Evidence from Amazonian forests is consistent with isohydric control of leaf water potential. Plant Cell Environ 29:151–165. https://doi.org/10.1111/j.1365-3040.2005.01407.x
Franks PJ, Drake PL, Froend RH (2007) Anisohydric but isohydrodynamic: Seasonally constant plant water potential gradient explained by a stomatal control mechanism incorporating variable plant hydraulic conductance. Plant Cell Environ 30:19–30. https://doi.org/10.1111/j.1365-3040.2006.01600.x
Ghimire CP, Lubczynski MW, Bruijnzeel LA, Chavarro-Rincón D (2014) Transpiration and canopy conductance of two contrasting forest types in the Lesser Himalaya of Central Nepal. Agric Meteorol 197:76–90. https://doi.org/10.1016/j.agrformet.2014.05.012
Gillner S, Korn S, Hofmann M, Roloff A (2017) Contrasting strategies for tree species to cope with heat and dry conditions at urban sites. Urban Ecosyst 20:853–865. https://doi.org/10.1007/s11252-016-0636-z
Granier A (1987) Evaluation of transpiration in a Douglas-fir stand by means of sap flow measurements. Tree Physiol 3:309–320. https://doi.org/10.1093/treephys/3.4.309
Grossiord C, Buckley TN, Cernusak LA, Novick KA, Poulter B, Siegwolf RTW, Sperry JS, McDowell NG (2020) Plant responses to rising vapor pressure deficit. New Phytol 226:1550–1566. https://doi.org/10.1111/nph.16485
Hetherington AM, Woodward FI (2003) The role of stomata in sensing and driving environmental change. Nature 424:901–908. https://doi.org/10.1038/nature01843
Hoffmann WA, Marchin RM, Abit P, Lau OL (2011) Hydraulic failure and tree dieback are associated with high wood density in a temperate forest under extreme drought. Glob Chang Biol 17:2731–2742. https://doi.org/10.1111/j.1365-2486.2011.02401.x
Jian S, Wu Z, Hu C (2019) Estimation of water use of Pinus tabulaeformis Carr. in Loess Plateau of Northwest China. J Hydrol Hydromech 67:271–279. https://doi.org/10.2478/johh-2019-0013
Klein T (2014) The variability of stomatal sensitivity to leaf water potential across tree species indicates a continuum between isohydric and anisohydric behaviours. Funct Ecol 28:1313–1320. https://doi.org/10.1111/1365-2435.12289
Komatsu H, Shinohara Y, Kume T, Tsuruta K, Otsuki K (2016) Does measuring azimuthal variations in sap flux lead to more reliable stand transpiration estimates? Hydrol Process 30:2129–2137. https://doi.org/10.1002/hyp.10780
Kumagai T, Tateishi M, Shimizu T, Otsuki K (2008) Transpiration and canopy conductance at two slope positions in a Japanese cedar forest watershed. Agric Meteorol 148:1444–1455. https://doi.org/10.1016/j.agrformet.2008.04.010
Li Z, Yu P, Wang Y, Webb AA, He C, Wang Y, Yang L (2017) A model coupling the effects of soil moisture and potential evaporation on the tree transpiration of a semi-arid larch plantation. Ecohydrology 10:e1764. https://doi.org/10.1002/eco.1764
Litvak E, McCarthy HR, Pataki DE (2011) Water relations of coast redwood planted in the semi-arid climate of southern California. Plant Cell Environ 34:1384–1400. https://doi.org/10.1111/j.1365-3040.2011.02339.x
Litvak E, McCarthy HR, Pataki DE (2012) Transpiration sensitivity of urban trees in a semi-arid climate is constrained by xylem vulnerability to cavitation. Tree Physiol 32:373–388. https://doi.org/10.1093/treephys/tps015
Livesley SJ, McPherson EG, Calfapietra C (2016) The Urban Forest and Ecosystem Services: Impacts on Urban Water, Heat, and Pollution Cycles at the Tree, Street, and City Scale. J Environ Qual 45:119–124. https://doi.org/10.2134/jeq2015.11.0567
Martin-StPaul N, Delzon S, Cochard H (2017) Plant resistance to drought depends on timely stomatal closure. Ecol Lett 20:1437–1447. https://doi.org/10.1111/ele.12851
McDowell N, Pockman WT, Allen CD, David D, Cobb N, Kolb T, Plaut J, Sperry J, West A, Williams DG, Yepez EA (2008) Mechanisms of plant survival and mortality during drought : why do some plants survive while others succumb to drought? New Phytol 178:719–739. https://doi.org/10.1111/j.1469-8137.2008.02436.x
McJannet D, Fitch P, Disher M, Wallace J (2007) Measurements of transpiration in four tropical rainforest types of north Queensland, Australia. Hydrol Process 21:3549–3564. https://doi.org/10.1002/hyp.6576
Mielke MS, Oliva MA, de Barros NF, Penchel RM, Martinez CA, de Almeida AC (1999) Stomatal control of transpiration in the canopy of a clonal Eucalyptus grandis plantation. Trees Struct Funct 13:152–160. https://doi.org/10.1007/pl00009746
Nalevanková P, Ježík M, Sitková Z, Vido J, Leštianska A, Střelcová K (2018) Drought and irrigation affect transpiration rate and morning tree water status of a mature European beech (Fagus sylvatica L) forest in Central Europe. Ecohydrology 11(6):e1958
Oishi AC, Hawthorne DA, Oren R (2016) Baseliner: An open-source, interactive tool for processing sap flux data from thermal dissipation probes. SoftwareX 5:139–143. https://doi.org/10.1016/j.softx.2016.07.003
Oleson KW, Monaghan A, Wilhelmi O, Barlage M, Brunsell N, Feddema J, Hu L, Steinhoff DF (2015) Interactions between urbanization, heat stress, and climate change. Clim Change 129:525–541. https://doi.org/10.1007/s10584-013-0936-8
Pangle RE, Limousin JM, Plaut JA, Yepez EA, Hudson PJ, Boutz AL, Gehres N, Pockman WT, Mcdowell NG (2015) Prolonged experimental drought reduces plant hydraulic conductance and transpiration and increases mortality in a piñon-juniper woodland. Ecol Evol 5:1618–1638. https://doi.org/10.1002/ece3.1422
Pataki DE, McCarthy HR, Litvak E, Pincetl S (2011) Transpiration of urban forests in the Los Angeles metropolitan area. Ecol Appl 21:661–677. https://doi.org/10.1890/09-1717.1
Pivovaroff AL, Cook VMW, Santiago LS (2018) Stomatal behaviour and stem xylem traits are coordinated for woody plant species under exceptional drought conditions. Plant Cell Environ 41:2617–2626. https://doi.org/10.1111/pce.13367
Quero JL, Sterck FJ, Martínez-Vilalta J, Villar R (2011) Water-use strategies of six co-existing Mediterranean woody species during a summer drought. Oecologia 166:45–57. https://doi.org/10.1007/s00442-011-1922-3
Sand E, Konarska J, Howe AW, Andersson-Sköld Y, Moldan F, Pleijel H, Uddling J (2018) Effects of ground surface permeability on the growth of urban linden trees. Urban Ecosyst 21:691–696. https://doi.org/10.1007/s11252-018-0750-1
Savi T, Bertuzzi S, Branca S, Tretiach M, Nardini A (2015) Drought-induced xylem cavitation and hydraulic deterioration: Risk factors for urban trees under climate change? New Phytol 205:1106–1116. https://doi.org/10.1111/nph.13112
Sperry JS (2000) Hydraulic constraints on plant gas exchange. Agric Meteorol 104:13–23. https://doi.org/10.1016/s0168-1923(00)00144-1
Sperry JS, Hacke UG, Oren R, Comstock JP (2002) Water deficits and hydraulic limits to leaf water supply. Plant Cell Environ 25:251–263. https://doi.org/10.1046/j.0016-8025.2001.00799.x
Spicer R, Gartner BL (2001) The effects of cambial age and position within the stem on specific conductivity in Douglas-fir (Pseudotsuga menziesii) sapwood. Trees Struct Funct 15:222–229. https://doi.org/10.1007/s004680100093
Sun G, Zhou G, Zhang Z, Wei X, McNulty SG, Vose JM (2006) Potential water yield reduction due to forestation across China. J Hydrol 328:548–558. https://doi.org/10.1016/j.jhydrol.2005.12.013
Sun PS, Ma LY, Wang XP, Zhai MP (2000) Temporal and spacial variation of sap flow of Chinese pine (Pinus tabulaeformis). J Beijing Univ 22:1–6
Tardieu F, Davies WJ (1993) Integration of hydraulic and chemical signalling in the control of stomatal conductance and water status of droughted plants. Plant Cell Environ 16:341–349. https://doi.org/10.1111/j.1365-3040.1993.tb00880.x
Thomsen S, Reisdorff C, Gröngröft A, Jensen K, Eschenbach A (2020) Responsiveness of mature oak trees (Quercus robur L.) to soil water dynamics and meteorological constraints in urban environments. Urban Ecosyst 23:173–186. https://doi.org/10.1007/s11252-019-00908-z
Tuzet A, Perrier A, Leuning R (2003) A coupled model of stomatal conductance, photosynthesis and transpiration. Plant Cell Environ 26:1097–1116. https://doi.org/10.1046/j.1365-3040.2003.01035.x
Ueyama M, Iwata H, Harazono Y (2014) Autumn warming reduces the CO2 sink of a black spruce forest in interior Alaska based on a nine-year eddy covariance measurement. Glob Chang Biol 20:1161–1173. https://doi.org/10.1111/gcb.12434
Urban J, Rubtsov AV, Urban AV, Shashkin AV, Benkova VE (2019) Canopy transpiration of a Larix sibirica and Pinus sylvestris forest in Central Siberia. Agric Meteorol 271:64–72. https://doi.org/10.1016/j.agrformet.2019.02.038
Wang H, Ouyang Z, Chen W, Wang X, Zheng H, Ren Y (2011) Water, heat, and airborne pollutants effects on transpiration of urban trees. Environ Pollut 159:2127–2137. https://doi.org/10.1016/j.envpol.2011.02.031
Yuan Y, Chen D, Wu S, Mo L, Tong G, Yan D (2019) Urban sprawl decreases the value of ecosystem services and intensifies the supply scarcity of ecosystem services in China. Sci Total Environ 697:134170. https://doi.org/10.1016/j.scitotenv.2019.134170
Zhang J, Gao G, Li Z, Fu B, Gupta HV (2020) Identification of climate variables dominating streamflow generation and quantification of streamflow decline in the Loess Plateau. China Sci Total Environ 722:137935. https://doi.org/10.1016/j.scitotenv.2020.137935
Zhang Y, Meinzer FC, Qi J, Goldstein G, Cao K (2013) Midday stomatal conductance is more related to stem rather than leaf water status in subtropical deciduous and evergreen broadleaf trees. Plant Cell Environ 36:149–158. https://doi.org/10.1111/j.1365-3040.2012.02563.x
Zhou D, Zhao S, Liu S, Zhang L, Zhu C (2014) Surface urban heat island in China’s 32 major cities: Spatial patterns and drivers. Remote Sens Environ 152:51–61. https://doi.org/10.1016/j.rse.2014.05.017
Acknowledgements
The Inner Mongolia Academy of Forestry Science supported the field experiment. We sincerely acknowledge anonymous reviewers and editor for their insightful comments and suggestions that help us improve our original manuscript greatly.
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This work was financially supported by the National Science-technology Support Plan Projects of China (Grant No. 2015BAD07B06-4) and the China National Key R&D Program (Grant No. 2017YFE0118100).
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ZQZ and CZSN developed research and experiments, reviewed and edited the writing; CSN performed the experiments, collected the data, conducted data analysis wrote the manuscript; ZK helped the field experiments and data analysis. All authors read and approved the final manuscript.
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Chen, S., Chen, Z., Kong, Z. et al. The increase of leaf water potential and whole-tree hydraulic conductance promotes canopy conductance and transpiration of Pinus tabulaeformis during soil droughts. Trees 37, 41–52 (2023). https://doi.org/10.1007/s00468-022-02322-z
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DOI: https://doi.org/10.1007/s00468-022-02322-z