[1] Katul GG, Oren R, Manzoni S, et al. Evapotranspiration: A process driving mass transport and energy exchange in the soil-plant-atmosphere-climate system. Reviews of Geophysics, 2012, 50: RG3002 [2] Sprenger M, Tetzlaff D, Buttle J, et al. Storage, mixing, and fluxes of water in the critical zone across northern environments inferred by stable isotopes of soil water. Hydrological Processes, 2018, 32: 1720-1737 [3] Gessler A, Bächli L, Rouholahnejad Freund E, et al. Drought reduces water uptake in beech from the drying topsoil, but no compensatory uptake occurs from deeper soil layers. New Phytologist, 2022, 233: 194-206 [4] Kleine L, Tetzlaff D, Smith A, et al. Using water stable isotopes to understand evaporation, moisture stress, and re-wetting in catchment forest and grassland soils of the summer drought of 2018. Hydrology and Earth System Sciences, 2020, 24: 3737-3752 [5] Hrachowitz M, Benettin P, van Breukelen BM, et al. Transit times: The link between hydrology and water quality at the catchment scale. Wiley Interdisciplinary Reviews: Water, 2016, 3: 629-657 [6] Kuppel S, Tetzlaff D, Maneta MP, et al. Critical zone storage controls on the water ages of ecohydrological outputs. Geophysical Research Letters, 2020, 47: e2020GL088897 [7] Kirchner JW. Aggregation in environmental systems: Part 1: Seasonal tracer cycles quantify young water fractions, but not mean transit times, in spatially heterogeneous catchments. Hydrology and Earth System Sciences, 2016, 20: 279-297 [8] Berghuijs WR, Kirchner JW. The relationship between contrasting ages of groundwater and streamflow. Geophy-sical Research Letters, 2017, 44: 8925-8935 [9] Sprenger M, Stumpp C, Weiler M, et al. The demographics of water: A review of water ages in the critical zone. Reviews of Geophysics, 2019, 57: 800-834 [10] Zhang WG, Wilkin JL, Schofield OME. Simulation of water age and residence time in New York Bight. Journal of Physical Oceanography, 2010, 40: 965-982 [11] Luo Z, Nie Y, Ding Y, et al. Replenishment and mean residence time of root-zone water for woody plants growing on rocky outcrops in a subtropical karst critical zone. Journal of Hydrology, 2021, 603: 127136 [12] Xu X, Guan H, Skrzypek G, et al. Root-zone moisture replenishment in a native vegetated catchment under Mediterranean climate. Hydrological Processes, 2019, 33: 2394-2407 [13] Jasechko S, Kirchner JW, Welker JM, et al. Substantial proportion of global streamflow less than three months old. Nature Geoscience, 2016, 9: 126-129 [14] von Freyberg J, Allen ST, Seeger S, et al. Sensitivity of young water fractions to hydro-climatic forcing and landscape properties across 22 Swiss catchments. Hydrology and Earth System Sciences, 2018, 22: 3841-3861 [15] Lutz SR, Krieg R, Müller C, et al. Spatial patterns of water age: Using young water fractions to improve the characterization of transit times in contrasting catchments. Water Resources Research, 2018, 54: 4767-4784 [16] Song C, Wang G, Liu G, et al. Stable isotope variations of precipitation and streamflow reveal the young water fraction of a permafrost watershed. Hydrological Processes, 2017, 31: 935-947 [17] Peng H, Xia H, Chen H, et al. Spatial variation characteristics of vegetation phenology and its influencing factors in the subtropical monsoon climate region of southern China. PLoS One, 2021, 16(4): e0250825 [18] 王锐, 章新平, 戴军杰, 等. 亚热带湿润区樟树吸水的土层来源及研究方法对比. 水土保持学报, 2020, 34(5): 267-276 [19] Dai J, Zhang X, Luo Z, et al. Variation of the stable isotopes of water in the soil-plant-atmosphere continuum of a Cinnamomum camphora woodland in the East Asian monsoon region. Journal of Hydrology, 2020, 589: 125199 [20] Luo Z, Guan H, Zhang X, et al. Examination of the ecohydrological separation hypothesis in a humid subtropical area: Comparison of three methods. Journal of Hydrology, 2019, 571: 642-650 [21] Sprenger M, Herbstritt B, Weiler M. Established methods and new opportunities for pore water stable isotope analysis. Hydrological Processes, 2015, 29: 5174-5192 [22] Luo Z, Nie Y, Guan H, et al. Widespread root-zone water bypass for various climates and species: Implications for the ecohydrological separation understanding. Agricultural and Forest Meteorology, 2022, 324: 109107 [23] Genereux D. Quantifying uncertainty in tracer-based hydrograph separations. Water Resources Research, 1998, 34: 915-919 [24] Dai J, Zhang X, Wang L, et al. Seasonal isotopic cycles used to identify transit times and the young water fraction within the critical zone in a subtropical catchment in China. Journal of Hydrology, 2022, 612: 128138 [25] Xiao X, Zhang X, Wu H, et al. Stable isotopes of surface water and groundwater in a typical subtropical basin in south-central China: Insights into the young water fraction and its seasonal origin. Hydrological Processes, 2022, 36: e14574 [26] Yang B, Wen X, Sun X. Seasonal variations in depth of water uptake for a subtropical coniferous plantation subjected to drought in an East Asian monsoon region. Agricultural and Forest Meteorology, 2015, 201: 218-228 [27] Benettin P, Nehemy MF, Cernusak LA, et al. On the use of leaf water to determine plant water source: A proof of concept. Hydrological Processes, 2021, 35: e14073 [28] 雷自然, 贾国栋, 余新晓, 等. 植物水分来源稳定氢氧同位素偏移研究进展. 植物生态学报, 2023, 47(1): 25-40 [29] Xia C, Zuecco G, Chen K, et al. The estimation of young water fraction based on isotopic signals: Challenges and recommendations. Frontiers in Ecology and Evolution, 2023, 11: 1114259 [30] 吴华武, 章新平, 关华德, 等. 不同水汽来源对湖南长沙地区降水中δD、δ18O的影响. 自然资源学报, 2012, 27(8): 1404-1414 [31] Liu J, Jiang C, Wu H, et al. Controls on leaf water hydrogen and oxygen isotopes: A local investigation across seasons and altitude. Hydrology and Earth System Sciences, 2023, 27: 599-612 [32] 邓文平, 章洁, 张志坚, 等. 北京土石山区水分在土壤-植物-大气连续体(SPAC)中的稳定同位素特征. 应用生态学报, 2017, 28(7): 2171-2178 [33] Ellsworth PZ, Williams DG. Hydrogen isotope fractionation during water uptake by woody xerophytes. Plant and Soil, 2007, 291: 93-107 [34] Dawson TE, Ehleringer JR. Streamside trees that do not use stream water. Nature, 1991, 350: 335-337 [35] Berry ZC, Evaristo J, Moore G, et al. The two water worlds hypothesis: Addressing multiple working hypotheses and proposing a way forward. Ecohydrology, 2018, 11: e1843 [36] Luo Z, Nie Y, Chen H, et al. Water age dynamics in plant transpiration: The effects of climate patterns and rooting depth. Water Resources Research, 2023, 59: e2022WR033566 [37] Chen G, Wu W, Meng T, et al. Quantitative partitioning of temporal origin of transpiration into pre- and post-plantation under deep-rooted vegetation on the Loess Plateau of China. Journal of Hydrology, 2023, 617: 128964 [38] Evaristo J, McDonnell JJ, Clemens J. Plant source water apportionment using stable isotopes: A comparison of simple linear, two-compartment mixing model approaches. Hydrological Processes, 2017, 31: 3750-3758 |