2016
DOI: 10.1007/s12665-016-5694-2
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Differential soil moisture pulse uptake by coexisting plants in an alpine Achnatherum splendens grassland community

Abstract: The niche differentiation of resources among coexisting plants commonly reflects the fundamental functions of plant coexistence in water-limited ecosystems. However, the dynamics of water use patterns by coexisting plants that respond to soil moisture pulses are scarcely known in the semiarid alpine ecosystems of the QinghaiTibetan Plateau, particularly for deep-rooted grasses such as Achnatherum splendens in the Qinghai Lake watershed. Hence, we used the stable deuterium isotope method to detect the potential… Show more

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Cited by 28 publications
(35 citation statements)
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“…Therefore, any shift in precipitation distribution during peak growing period, even if total precipitation remains stable, may reshape species interactions and alter plant community composition in this region. Moreover, in addition to precipitation amount, precipitation characteristics such as distribution and frequency need further investigation, as these parameters may have essential consequences in altering the competition among coexisting species (Craine et al, ; Wu et al, ).…”
Section: Discussionmentioning
confidence: 99%
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“…Therefore, any shift in precipitation distribution during peak growing period, even if total precipitation remains stable, may reshape species interactions and alter plant community composition in this region. Moreover, in addition to precipitation amount, precipitation characteristics such as distribution and frequency need further investigation, as these parameters may have essential consequences in altering the competition among coexisting species (Craine et al, ; Wu et al, ).…”
Section: Discussionmentioning
confidence: 99%
“…Species exploit different water use strategies in the trade‐off among water absorption, stomatal adjustment, leaf water potential, and carbon gain to adapt to varied soil moisture (Tang, Wen, Sun, Chen, & Wang, ; West et al, ; Zapater, Breda, Bonal, Pardonnet, & Granier, ). The root architecture system (Swaffer, Holland, Doody, Li, & Hutson, ; Yang, Wen, & Sun, ) and precipitation characteristics (Wu et al, ) are considered to be the essential factors influencing water uptake by plant species. However, the relationships between root distribution and their contribution to water absorption remain uncertain (Moreira, Sternberg, & Nepstad, ; Swaffer et al, ).…”
Section: Introductionmentioning
confidence: 99%
“…This suggests that Hs and Hj will suffer greater water stress because of their high dependence on shallow soil water, especially during the early growing season, whereas Hm can exploit deeper soil water and groundwater (Figure h and Table ). In addition, the annual mean evaporation amount in the study region has peaked at 1,300 mm (Li & Schroeder, ; Ohte et al, ; Wu, Li, Li, et al, ). Thus, shallow soil water could become less available because of increased consumption by shallow‐rooted plants and might not meet the growth and survival requirements of H. rhamnoides , especially during years of prolonged droughts.…”
Section: Discussionmentioning
confidence: 99%
“…The long‐term annual mean temperature and precipitation amount are approximately 0.1°C and 400 mm, respectively. The seasonal distribution of precipitation is uneven, with approximately 65% of precipitation occurring during the growing season (May–September), primarily characterized by small precipitation events (e.g., 0–5 mm) (Wu, Li, Li, et al, ). The soil in the study area mainly comprises chestnut soil, with an average soil thickness of 60–100 cm.…”
Section: Methodsmentioning
confidence: 99%
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