Radial growth of Tamarix ramosissima responds to changes in the water regime in an extremely arid region of northwestern China

Xiao, Suguang; Hu, Xiao

doi:10.1007/s00254-007-0666-1

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…A study of isotopic variation in the xylem cellulose of the tamarisk showed that the water source for saplings was mainly local precipitation, whereas young and mature trees primarily utilized groundwater to support root system development (Yang et al, 1996). Through the study of the ecohydrological response of tamarisk along the shores of Juyan Lake in the same study area, Xiao and Xiao (2007) showed that fluctuations in the lake water level during the growing season (May-August) was primarily responsible for variations in the radial growth of tamarisk. Availability of water is the main factor that limits plant growth in arid regions, thus high temperatures will magnify the negative impacts on radial stem variation of tamarisk due to the creation of water deficits when the groundwater depth becomes deep enough that the soil moisture above this level can no longer meet the needs of the trees (Xiao and Xiao, 2007).…”

Section: Limiting Factors For Tree Ring Formationmentioning

confidence: 98%

“…Through the study of the ecohydrological response of tamarisk along the shores of Juyan Lake in the same study area, Xiao and Xiao (2007) showed that fluctuations in the lake water level during the growing season (May-August) was primarily responsible for variations in the radial growth of tamarisk. Availability of water is the main factor that limits plant growth in arid regions, thus high temperatures will magnify the negative impacts on radial stem variation of tamarisk due to the creation of water deficits when the groundwater depth becomes deep enough that the soil moisture above this level can no longer meet the needs of the trees (Xiao and Xiao, 2007). The results of this study suggest that the groundwater depth was the primary limiting factor to the formation of tree rings in tamarisk.…”

Section: Limiting Factors For Tree Ring Formationmentioning

confidence: 98%

“…Clump crown diameter averaged 2 m×2 m, and clump height ranged from 1.0 to 1.5 m. Groundwater depth varied from 0.5 to 2.0 m in 2012. The zonal soil type is a grey desert soil, and the soil in the riparian forest is a tugaic soil (Xiao and Xiao, 2007).…”

Section: Fig 1 Location Of the Study Areamentioning

confidence: 99%

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Intra-annual stem diameter growth of Tamarix ramosissima and association with hydroclimatic factors in the lower reaches of China’s Heihe River

Xiao

Peng

et al. 2013

J. Arid Land

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High-resolution observations of cambial phenology and intra-annual growth dynamics are useful approaches for understanding the response of tree growth to climate and environmental change. During the past two decades, rapid socioeconomic development has increased the demand for water resources in the oases of the middle reaches of the Heihe River in northwestern China, and the lower reaches of the Heihe River have changed from a perennial river to an ephemeral stream with a decreased and degraded riparian zone. Tamarisk (Tamarix ramosissima) is the dominant shrub species of the desert riparian forest. In this study, the daily and seasonal patterns of tamarisk stem diameter growth, including the main period of tree ring formation, were examined. Observations concerning the driving forces of growth changes, along with implications for the ecology of the dendrohydrological area and management of desert riparian forests in similar arid regions, are also presented. The diurnal-seasonal activity of stem diameter and the dynamics of growth ring formation were studied using a point dendrometer and micro-coring methods during the 2012 growing season in shrub tamarisk in a desert riparian forest stand in the lower reaches of the Heihe River in Ejin Banner, Inner Mongolia of northwestern China. Generally, the variation in diurnal diameter of tamarisk was characterized by an unstable multi-peak pattern, with the cumulative stem diameter growth over the growing season following an S-shaped curve. The period from late May to early August was the main period of stem diameter growth and growth-ring formation. Among all of the hydroclimatic factors considered in this study, only groundwater depth was significantly correlated with stem diameter increment during this period. Therefore, for the dendrochronological study, the annual rings of the tamarisk can be used to reconstruct processes that determine the regional water regime, such as river runoff and fluctuations in groundwater depth. For the management of desert riparian forests, suitable groundwater depths must be maintained in the spring and summer to sustain tree health and a suitable stand structure.

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Section: Limiting Factors For Tree Ring Formationmentioning

confidence: 98%

Section: Limiting Factors For Tree Ring Formationmentioning

confidence: 98%

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Intra-annual stem diameter growth of Tamarix ramosissima and association with hydroclimatic factors in the lower reaches of China’s Heihe River

Xiao

Peng

et al. 2013

J. Arid Land

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Growth, earlywood anatomy and wood nutrients respond to precipitation and flow in semi-arid riparian tamarisk forests

Camarero,

Gazol,

Colangelo

et al. 2024

Dendrochronologia

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Ecological Water Demand Estimations for Desert Terminal Lake Survival under Inland River Water Diversion Regulation

Jiang

et al. 2022

Water

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Desert terminal lakes are important signals to discern ecological degradation crises, particularly in arid areas where an artificial project of ecological water diversion has designated a quota of river water to prevent lake body shrinkage and protect the ecosystem. Knowledge of the minimum ecological water demand (EWD) is thus necessary to ensure the basic health of lake ecosystems. This study analyzed the spatiotemporal evolution of water boundaries using Landsat satellites data via remote sensing technology from 2002 to 2017 in East Juyan Lake, an inland desert terminal lake of the Heihe River in northwest China. The minimum lake water demand was determined using two estimation methods: the lake-evaporation-oriented EWD method and the minimum water level method. In the latter method, both lake topography (using water-level area curves) and biological survival demands (using bighead carps as indicators) were considered to derive the minimum lake EWD. Water diversion to the lake over the past 15 years has increased the lake’s area, but there are still marked intra-annual seasonal variations. The annual minimum lake water demand was suggested to be 54 × 106 m3/year by comparing the different methods; however, it was not satisfied, and the lake survival was endangered when the occurrence frequency of the annual runoff in the Zhengyixia hydrological station exceeded 65%. This study offered promising directions for inland lake water resource management.

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Radial growth of Tamarix ramosissima responds to changes in the water regime in an extremely arid region of northwestern China

Cited by 3 publications

References 4 publications

Intra-annual stem diameter growth of Tamarix ramosissima and association with hydroclimatic factors in the lower reaches of China’s Heihe River

Intra-annual stem diameter growth of Tamarix ramosissima and association with hydroclimatic factors in the lower reaches of China’s Heihe River

Growth, earlywood anatomy and wood nutrients respond to precipitation and flow in semi-arid riparian tamarisk forests

Ecological Water Demand Estimations for Desert Terminal Lake Survival under Inland River Water Diversion Regulation

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