Contrasting adaptive strategies by Caragana korshinskii and Salix psammophila in a semiarid revegetated ecosystem

Agricultural and Forest Meteorology, Journal Year: 2021, Volume and Issue: 300, P. 108323 - 108323

Published: Jan. 21, 2021

Language: Английский

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Alleviation of drought stress through foliar application of thiamine in two varieties of pea ( Pisum sativum L.)

Plant Signaling & Behavior, Journal Year: 2023, Volume and Issue: 18(1)

Published: March 8, 2023

Drought stress poorly impacts many morphological and physio-biochemical processes in plants. Pea (Pisum sativum L.) plants are highly nutritious crops destined for human consumption; however, their productivity is threatened under drought stress. Thiamine (vitamin B1) well-known essential micronutrient, acting as a cofactor key metabolic processes. Therefore, this study was designed to examine the protective effect of foliar application thiamine (0, 250, 500 ppm) on two varieties pea Here, we conducted pot experiment at Government College Women University, Faisalabad, investigate traits (sarsabz metior) grown treatment. applied after germination period 1 month. Results showed that root fresh dry weight, shoot number pods, leaf area, total soluble sugars, phenolics, protein contents, catalase, peroxidase, mineral ions were reduced against However, (both 250 overcome also enhances these parameters, significantly increases antioxidant activities (catalase peroxidase). Moreover, performance sarsabz better control conditions than metior variety. In conclusion, exogenous enabled withstand by regulating several physiological biochemical mechanisms. agriculture, it great latent alleviate antagonistic impact through thiamine.

Language: Английский

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Water use pattern and transpiration of Mongolian pine plantations in relation to stand age on northern Loess Plateau of China

Agricultural and Forest Meteorology, Journal Year: 2023, Volume and Issue: 330, P. 109320 - 109320

Published: Jan. 17, 2023

Language: Английский

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Variations in water sources used by winter wheat across distinct rainfall years in the North China Plain

Journal of Hydrology, Journal Year: 2023, Volume and Issue: 618, P. 129186 - 129186

Published: Jan. 28, 2023

Language: Английский

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Reduction of vegetation-accessible water storage capacity after deforestation affects catchment travel time distributions and increases young water fractions in a headwater catchment

Hydrology and earth system sciences, Journal Year: 2021, Volume and Issue: 25(9), P. 4887 - 4915

Published: Sept. 7, 2021

Abstract. Deforestation can considerably affect transpiration dynamics and magnitudes at the catchment scale thereby alter partitioning between drainage evaporative water fluxes released from terrestrial hydrological systems. However, it has so far remained problematic to directly link reductions in changes physical properties of system quantify these scale. As a consequence, is difficult effect deforestation on parameters catchment-scale models. This turn leads substantial uncertainties predictions response after but also poor understanding how affects principal descriptors transport, such as travel time distributions young fractions. The objectives this study Wüstebach experimental are therefore provide mechanistic explanation why be observed further storage release water. More specifically, we test hypotheses that (1) post-deforestation largely direct consequence reduction effective vegetation-accessible capacity unsaturated root zone (SU, max) (2) deforestation-induced SU, max shape results shifts towards higher fractions stream. Simultaneously modelling streamflow stable isotope using meaningfully adjusted model both for pre- periods, respectively, with an integrated tracer routine based concept storage-age selection functions used track through estimate effects Fyw. It was found led significant increase accompanied by corresponding fluxes. reflected runoff ratio CR=0.55 0.68 period despite similar climatic conditions. could linked volume soil within reach active roots thus accessible vegetation ∼258 mm pre-deforestation ∼101 period. model, reflecting parameter max, indicated stream characterized slightly yet statistically not significantly mean (Fyw∼0.13) than (Fyw∼0.12). In spite limited overall Fyw, were wet during which increased values Fyw∼0.37 individual storms. caused sensitivity discharge under conditions dFyw/dQ=0.25 0.36. Overall, provides quantitative evidence resulted volumes only responsible evaporation fundamental characteristics catchment, circulation dynamics. particular conditions, proportions younger stream, implying faster routing isotopes plausibly solutes sub-surface.

Language: Английский

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On the Spatio-Temporal Under-Representation of Isotopic Data in Ecohydrological Studies

Frontiers in Water, Journal Year: 2021, Volume and Issue: 3

Published: March 11, 2021

OPINION article Front. Water, 11 March 2021Sec. Water and Critical Zone https://doi.org/10.3389/frwa.2021.643013

Language: Английский

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A comparative study of plant water extraction methods for isotopic analyses: Scholander-type pressure chamber vs. cryogenic vacuum distillation

Hydrology and earth system sciences, Journal Year: 2022, Volume and Issue: 26(13), P. 3673 - 3689

Published: July 14, 2022

Abstract. Recent tracer-based studies using stable isotopes of hydrogen and oxygen showed that different methods for extracting water from plant tissues can return isotopic compositions due to the presence organic compounds because they extract domains. One most used is cryogenic vacuum distillation (CVD), which tends total water. Conversely, Scholander-type pressure chamber (SPC), commonly by tree physiologists measure potential in determine stress, expected only more mobile (i.e., xylem inter-cellular water). However, few reported application SPC analyses, therefore, inter-method comparisons between CVD are great value. In this work, we analyzed variability composition extracted CVD, also considering signature various leaves, twig without bark, with close trunk tree, wood core) species alder, apple, chestnut, beech). The extraction simple, be carried out field, it does not require specific laboratory work as case CVD. main limitation very small volume lignified twigs under stress conditions compared Our results indicated were significantly different. difference obtained two was smaller beech samples chestnut samples. enriched δ2H δ18O, respectively, than We conclude an alternative mostly extracts water, whereas retrieve all stored sampled tissue both living dead cells. aiming quantify relative contribution soil sources transpiration should rely on (which theoretically SPC) (sampled CVD), contains a fraction could longer time.

Language: Английский

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Flushing or mixing? Stable water isotopes reveal differences in arctic forest and peatland soil water seasonality

Hydrological Processes, Journal Year: 2023, Volume and Issue: 37(1)

Published: Jan. 1, 2023

Abstract Understanding the relative importance of different water sources that replenish soil storage is necessary to assess vulnerability sub‐arctic areas changes in climate and altered rain snow conditions, reflected timing magnitude infiltration. We examine spatiotemporal variability seasonal origin at soil‐vegetation interface Pallas catchment, located northern Finland. The field study was conducted from May 2019 June 2020 over two snowmelt seasons one summer growing season. sampled cores up a 1‐m depth stem dominant tree species four sites forests forested peatlands for stable isotopes. Seasonal rainfall variation late events were well identifiable well‐drained soils areas, while this input signal heavily attenuated wetter, peatland areas. Spatiotemporal forest similar, whereas controlled by extent hydrologic connectivity adjoining pools. A mixture both winter precipitation present during entire period, mineral showed an ephemeral response got nearly fully flushed twice hydrological year. Meltwater after early spring but became displaced isotopically enriched summer. evolution pools not dynamics offset between isotopic signals less pronounced peatlands. This data set uncovered high depth‐resolution, quantifying replenishing sustaining conditions.

Language: Английский

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Effect of soil water content changes caused by ridge-furrow plastic film mulching on the root distribution and water use pattern of spring maize in the Loess Plateau

Agricultural Water Management, Journal Year: 2021, Volume and Issue: 261, P. 107338 - 107338

Published: Nov. 15, 2021

Language: Английский

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Water uptake dynamics in apple trees assessed by an isotope labeling approach

Agricultural Water Management, Journal Year: 2022, Volume and Issue: 266, P. 107572 - 107572

Published: March 5, 2022

Improving our knowledge on the relative contribution of irrigation water, precipitation, and groundwater to tree transpiration is necessary for an efficient sustainable use water resources in agriculture. For this purpose, we applied deuterium (2H) enriched trace uptake by apple trees under field pot conditions. 2H-enriched was supplied Alpine valley mimicking sprinkler irrigation. Labeled infiltration soil presence shoots measured over a week. An ancillary experiment using potted performed elucidate role after saturation with water. Under conditions, infiltrated maximum depth 0.6 m, where most fine roots were present, mixed pre-irrigation Sprinkler taken up 2–4 h its supply shoot content increased first 24 h, then it leveled off. Tree absorbed from layer represented average 48 ± 3% 26 2% total axes leaves, respectively. The results confirmed allowed us speculate that conditions (ca. 0.9 m deep, capillary rise expected depth) did not significantly contribute uptake. Results indicate large fraction (52–74%) derive recent uptake, suggesting rather limited mixing within organs.

Language: Английский

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