Response of leaf stoichiometry of Oxytropis ochrocephala to elevation and slope aspect

Cao, Jianjun; Wang, Xueyan; Adamowski, Jan; Biswas, Asim; Chang, Zongqiang; Feng, Qi

doi:10.1016/j.catena.2020.104772

Cited by 47 publications

(65 citation statements)

References 83 publications

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“…Redundancy analysis (RDA) was performed with a subset of environmental variables to assess the relative impact of abiotic factors on plant leaf stoichiometry, using explanatory environmental variables (SOC, STN, STP and their corresponding ratio, pH, SS, SWC, ST, AP, NO 3 - -N and NH 4 + -N) as regression covariates [ 2 ]. Detrended correspondence analyses of the datasets were undertaken before performing RDA to ensure that gradient lengths fit a linear model [ 3 ]. However, it should be noted that when there is no redundancy between the change of response matrix and the change of interpretation matrix, caution should be exercised.…”

Section: Methodsmentioning

confidence: 99%

“…The balance of energy and its interaction with multiple chemical elements in the ecosystem drives ecological stoichiometry [ 1 , 2 , 3 ]. Carbon (C), nitrogen (N) and phosphorus (P) concentrations are the most critical life elements in cell structure and function [ 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

“…These also reflect the balance of soil nutrient and plant nutrient demand [ 1 , 9 , 10 ]. The stoichiometric characteristics of leaves are often used as important indicators to evaluate the nutrient utilization strategies of plants and the nutrient limitations of ecosystems [ 3 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

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Seasonal Dynamics of Leaf Stoichiometry of Phragmites australis: A Case Study From Yangguan Wetland, Dunhuang, China

Jian

Biswas

et al. 2020

Plants

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Leaf stoichiometry can enhance our understanding of leaf elements’ (C, N and P) concentrations and their corresponding ratios in an ecosystem with seasonal environment changes. This study quantified the seasonal dynamics of leaf stoichiometry of P. australis from Yangguan wetland, Dunhuang, China as a case study example. The leaf C concentration (LC) of P. australis changed between seasons and was 392.26 (g×kg−1), 417.35 (g×kg−1) and 392.58 (g×kg−1) in spring, summer and autumn, respectively. Leaf N and P concentrations (LN and LP) were 23.49 (g×kg−1), and 17.54 (g×kg−1) and 5.86 (g×kg−1), and 1.00 (g×kg−1), 0.75 (g×kg−1) and 0.16 (g×kg−1), respectively, in the three seasons. The maximum (77.68) and the minimum values (17.00) of LC:LN were observed in the autumn and spring, respectively. Seasonal variations in LC:LP also showed a similar trend, with the greatest value of 3015.91 in autumn and the lowest value of 429.39 in spring. However, the highest (45.67) and the lowest values (24.18) of LN:LP were observed in autumn and summer, respectively, indicating that the growth of P. australis was mainly affected by P. Based on these results, it can be concluded that P. australis adopted a competition strategy during the early growth stage but took on a defense life strategy at the late growth stage to cope with various environments.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Seasonal Dynamics of Leaf Stoichiometry of Phragmites australis: A Case Study From Yangguan Wetland, Dunhuang, China

Jian

Biswas

et al. 2020

Plants

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“…The average annual precipitation is 433.6 mm, and the annual evaporation is 1488 mm. The average annual sunshine duration is 1893 hours, and the average annual temperature is 5.4℃ (Cao et al, 2020). In this region, grasslands dominate the south-facing slope aspects, while Qinghai spruce (Picea crassifolia Kom.)…”

Section: Study Areamentioning

confidence: 99%

“…In this region, grasslands dominate the south-facing slope aspects, while Qinghai spruce (Picea crassifolia Kom.) forests was on north-facing slope aspects (Cao et al, 2020). Samples were collected in the south-facing slope aspects.…”

Section: Study Areamentioning

confidence: 99%

Accumulation, risk assessment of trace elements in soil-herbage systems and effects of elevation on subalpine grassland in the northeast of Tibet Plateau

Yang

Wang

Zhao

et al. 2021

Preprint

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Ecological environment of remote grassland has become increasingly serious in many countries due to mining, tourism, grazing and other human activities. In this study, a total of 15 pairs of soil-herbage samples were collected in the northeast of the Tibet Plateau to study the relationship between physicochemical properties and content of trace elements in soils and elevation, and to examine the accumulation and fractionation of heavy metals in soil-herbage systems. In addition, the ecological risk of the subalpine grassland was also assessed. The average concentrations of Hg, As, Cu, Zn, Pb, Cd, Cr and Mn in soil were higher than their background values of Gansu soil, but the average concentrations of these heavy metals in herbage satisfied Hygienical Standard for Feeds. The speciation analysis of heavy metals in soil indicated that the exchangeable content of heavy metal was very low, except Pb, Cd, Mn. There was a linear relationship between pH, CaCO3, total phosphorus (TP), organic matter (OM), concentrations of Hg, As, Zn, Pb, Cr and Mn in soils, dry weight of herbage and elevation, while there was a quadratic curve trend between Cu, Cd in soils and elevation. The results of risk assessment showed that there was no obvious ecological risk in the study area.

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Topography-dependent climatic sensitivities in spruce tree growth in the Changbai Mountain, Northeast China

Wang

Gai

et al. 2021

Trees

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Response of leaf stoichiometry of Oxytropis ochrocephala to elevation and slope aspect

Cited by 47 publications

References 83 publications

Seasonal Dynamics of Leaf Stoichiometry of Phragmites australis: A Case Study From Yangguan Wetland, Dunhuang, China

Seasonal Dynamics of Leaf Stoichiometry of Phragmites australis: A Case Study From Yangguan Wetland, Dunhuang, China

Accumulation, risk assessment of trace elements in soil-herbage systems and effects of elevation on subalpine grassland in the northeast of Tibet Plateau

Topography-dependent climatic sensitivities in spruce tree growth in the Changbai Mountain, Northeast China

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