A review on salinity adaptation mechanism and characteristics of Populus euphratica, a boon for arid ecosystems

Rajput, Vishnu D.; Minkina, Tatiana; Chen, Yaning; Sushkova, Svetlana; Chapligin, Victor; Mandzhieva, Saglara

doi:10.1016/j.chnaes.2016.08.001

Cited by 37 publications

(25 citation statements)

References 74 publications

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“…It is possible that P. euphratica and Tamarix spp. are flood-tolerant species 37,39,40 and that they have evolved a unique allocation strategy that allows them to withstand flooding. For example, they often lose part of their aboveground biomass during flooding and increase the allocation of biomass to their roots during favorable times 41 .…”

Section: Discussionmentioning

confidence: 99%

Impact of groundwater depth and soil salinity on riparian plant diversity and distribution in an arid area of China

Zeng

Zhao

Shi

et al. 2020

Sci Rep

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Riparian plant diversity in arid regions is sensitive to changes in groundwater. Although it is well known that groundwater has a significant influence on plant diversity, there have been few studies on how groundwater and soil salinity impact plant community in desert riparian ecosystems. Therefore, we surveyed 77 quadrats (100 m × 100 m) to examine the relationship between groundwater depth, groundwater salinity, soil salinity and plant community in the upper reaches of the Tarim River. Data were analyzed with two-way indicator species analysis (TWINSPAN), detrended canonical correspondence analysis (DCCA) and principal component analysis (PCA). The results indicated that Populus euphratica, Tamarix ramosissima, and Phragmites australis were the dominant plants among trees, shrubs and herbs, respectively. Five plant community types were classified. There were significant differences in species diversity, soil moisture, soil salinity, groundwater depth and groundwater salinity across the community types. The composition and distribution of plant community are significantly influenced by groundwater depth, groundwater salinity, soil moisture, distances from the river to the quadrats, soil pH, electrical conductivity, total salt, CO 3 2− , Cl − , SO 4 2− , Ca 2+ , Mg 2+ , Na + and K +. Shallow groundwater depth, low groundwater salinity, and high soil moisture and soil salinity were associated with higher plant diversity.

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Section: Discussionmentioning

confidence: 99%

Impact of groundwater depth and soil salinity on riparian plant diversity and distribution in an arid area of China

Zeng

Zhao

Shi

et al. 2020

Sci Rep

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“…As a result, the NEP in September and October of 2015 was found to be much higher than that in 2014 and 2016. Consequently, the growth of the riparian forests is expected to be affected by the salinity in two main aspects [50][51][52]: Firstly, increased soluble salt ions in the soils can lead to a higher osmotic pressure, and a reduction in the soil water availability, which could inhibit the trees' growth. Secondly, the salt ions that enter into the plant and then accumulate with the loss of water likely reduce the physiological metabolism in the plant.…”

Section: Controls On the Carbon Fluxes Of Riparian Forestmentioning

confidence: 99%

Carbon Dioxide Fluxes and Their Environmental Controls in a Riparian Forest within the Hyper-Arid Region of Northwest China

Feng

et al. 2017

Forests

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Abstract:Hyper-arid regions are expected to undergo climatic change, but only a few research works have so far been conducted on the dynamics of carbon dioxide (CO 2 ) fluxes and their consequent responses to various bioclimatic factors, which is mainly attributable to a limited set of flux observations. In this study, the CO 2 fluxes exchanged between the forest and the atmosphere have been measured continuously by the eddy covariance approach from June 2013 to December 2016 in a riparian forest, which is a primary body of natural oases located within the lower reaches of inland rivers in China. The present results revealed that the climatic conditions characterized by relatively high mean air temperatures (T a ) with fluctuating annual precipitation (P) during the prescribed study periods were comparable to the historical mean value. The annual net ecosystem productivity (NEP) ranged from approximately 278 g C m −2 year −1 to 427 g C m −2 year −1 , with a mean value of 334 g C m −2 year −1 . The mean annual ecosystem respiration (Re) and the gross primary productivity (GPP) were found to be 558 and 892 g C m −2 year −1 , respectively. The results also ascertained that the high inter-annual variations in NEP were attributable to Re rather than to GPP, and this result was driven primarily by T a and the groundwater depth under similar eco-physiological processes. In addition, the CO 2 fluxes were also strongly correlated with the soil temperature and photosynthetically active radiation for the present study site. In conclusion, the desert riparian forest is a considerably significant carbon sink, particularly in the hyper-arid regions.

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“…Studies found that salt stress could regulate K by changing the anatomical structure of vessels (Ali et al, 1999;López-Perez et al, 2007;Navarro et al, 2007;Silva et al, 2008). According to the Hagen-Poiseuille relationship, K depended on the anatomic structure of xylem (Rajput et al, 2016). Typically, a larger vessel diameter and density were associated with higher K (Bass, 1982).…”

Section: Water Transport Of P Euphratica Saplings Under Different Samentioning

confidence: 99%

“…The groundwater salinity is 3.00-10.00 g/L, or even reaches up to 10.00-30.00 g/L in some areas in Xinjiang (Wang et al, 2010). P. euphratica is a salt-tolerant species that can grow in saline environments (Sixto et al, 2005;Fu et al, 2010;Rajput et al, 2016). Thus, P. euphratica is an optimal woody tree utilized for vegetation restoration due to the limited water resources and high salinity of groundwater in arid and semi-arid areas (Abassi et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Water transport and water use efficiency differ among Populus euphratica Oliv. saplings exposed to saline water irrigation

et al. 2019

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Populus euphratica Oliv. is a unique woody tree that can be utilized for vegetation restoration in arid and semi-arid areas. The effects of saline water irrigation (0.00, 2.93, 8.78 and 17.55 g/L NaCl solutions) on water transport and water use efficiency (WUE) of P. euphratica saplings were researched for improving the survival of P. euphratica saplings and vegetation restoration in arid and semi-arid areas of Xinjiang, China in 2011. Results showed that hydraulic conductivity and vulnerability to cavitation of P. euphratica saplings were more sensitive in root xylem than in twig xylem when irrigation water salinity increased. Irrigation with saline water concentration less than 8.78 g/L did not affect the growth of P. euphratica saplings, under which they maintained normal water transport in twig xylem through adjustment of anatomical structure of vessels and kept higher WUE and photosynthesis in leaves through adjustment of stomata. However, irrigation with saline water concentration up to 17.55 g/L severely inhibited the photochemical process and WUE of P. euphratica saplings, resulting in severe water-deficit in leaves and a sharp reduction in water transport in xylem. Thus, it is feasible to irrigate P. euphratica forest by using saline groundwater for improving the survival of P. euphratica saplings and vegetation restoration in arid and semi-arid areas of Xinjiang, China.

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A review on salinity adaptation mechanism and characteristics of Populus euphratica, a boon for arid ecosystems

Cited by 37 publications

References 74 publications

Impact of groundwater depth and soil salinity on riparian plant diversity and distribution in an arid area of China

Impact of groundwater depth and soil salinity on riparian plant diversity and distribution in an arid area of China

Carbon Dioxide Fluxes and Their Environmental Controls in a Riparian Forest within the Hyper-Arid Region of Northwest China

Water transport and water use efficiency differ among Populus euphratica Oliv. saplings exposed to saline water irrigation

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