Longitude gradient changes on plant community and soil stoichiometry characteristics of grassland in Hulunbeir

Xiaohui, 丁小慧 Ding; Shuzheng, 罗淑政 Luo; Jinwei, 刘金巍 Liu; Kui, 李魁 Li; Guohua, 刘国华 Liu

doi:10.5846/stxb201105020571

Cited by 10 publications

(2 citation statements)

References 3 publications

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“…In addition, we observed that leaf N and P concentrations decreased with increasing LAT and LON for meadow halophytes. This finding was not in line with the overall results of the study whereas appeared to be consistent with the field observations of plant community in the HunLunbeier Grassland ( Ding et al., 2012 ). Consequently, the overall patterns of leaf N and P stoichiometry patterns in halophytes were strongly controlled by large-scale geographical factors but simultaneously exhibited variations among diverse geographical locations.…”

Section: Discussioncontrasting

confidence: 67%

Leaf nitrogen and phosphorus stoichiometry of the halophytes across China

Tong,

Ma,

Lou

et al. 2023

Front. Plant Sci.

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Halophytes play a crucial role in the ecological restoration of saline and alkaline land and hold promising benefits to food security in China. Although a variety of aspects of halophytes have been extensively addressed, there is still a lack of overall understanding of the leaf nitrogen (N) and phosphorus (P) stoichiometric characteristics, especially at a national scale. We compiled a national dataset of 311 observations from 113 sampling sites across China to explore the changing trends and influencing factors on leaf N and P concentrations, and N:P ratio of halophytes. The results showed that leaf N concentration decreased significantly with increasing latitude (LAT), which was mainly driven by the mean annual temperature (MAT) and mean annual precipitation (MAP). The leaf P concentration increased remarkably with increasing longitude (LON), which was induced by the variation in soil total P (TP) content. The leaf N:P ratio increased as LAT increased and LON decreased, which was potentially regulated by the MAT, MAP, and soil TP content. The scaling exponents of the N-P relationship differed significantly among halophyte types and were 0.40, 0.87, and 1.39 for euhalophyte, pseudohalophyte, and recretohalophyte, respectively. The leaf N concentration exhibited significant differences among ecosystem types and halophyte types, whereas the leaf P concentration and N:P ratio remained relatively stable. In summary, the leaf N concentration and N-P scaling exponent might be the classification criteria for halophyte types from the perspective of plant nutrient resource allocation. Moreover, this study characterized the spatial distribution and allocation strategy of leaf N and P stoichiometry in halophytes by data integration analysis, providing the basic information for nutrient management in the processes of the future domestication and introduction of halophytes.

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Section: Discussioncontrasting

confidence: 67%

Leaf nitrogen and phosphorus stoichiometry of the halophytes across China

Tong,

Ma,

Lou

et al. 2023

Front. Plant Sci.

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“…Since then, ecological stoichiometry has rapidly developed in recent years in China. Research has focused on forest [14][15][16], grassland [17][18][19] and wetland ecosystems [20][21][22] and the effect of fertilizers on N:P ratios [23,24]. In general, the research has been broad, showing a trend of taking forest, the largest ecosystem on land, as the dominant ecosystem.…”

Section: Introductionmentioning

confidence: 99%

Leaf Carbon, Nitrogen and Phosphorus Stoichiometry in a Pinus yunnanensis Forest in Southwest China

Huang

Lang

et al. 2022

Sustainability

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Pinus yunnanensis forest is a unique forest type in southwest China and one of the main forest types in Yunnan Province, which also has great ecological, economic and social significance. Understanding the changes in the stoichiometric characteristics is a key to study the nutrient cycling, limiting factors and stability mechanisms of the forest ecosystem. However, the stoichiometric characteristics, stability of the ecosystem of P. yunnanensis natural forests and whether they are limited by nutrients are still poorly understood. Based on a K-S test, ANOVA analysis and OLS regression analysis, we analyzed the concentrations of leaf C, N and P in 48 woody species of natural P. yunnanensis forests from 122 plots to explore the pattern of leaf C:N:P stoichiometry. Our results showed that the mean values of leaf C, N and P plus C:N, C:P and N:P for the 48 woody species were 451.12, 11.05 and 1.11 mg/g and 45.03, 496.98 and 11.27, respectively. The coefficients of variation of leaf C, N and P plus C:N, C:P and N:P were 5.29%, 36.75%, 51.53%, 29.63%, 43.46% and 41.68%, respectively. The geometric mean values of leaf N, P and N:P were 10.49 and 1.00 mg/g and 10.51, respectively. Leaf C and N, and C and P relationships showed significant negative correlations, but a significant positive correlation was observed between leaf N and P. There were significant differences in leaf N and C:N across functional groups. There were significant differences in leaf C and P between evergreen and deciduous, conifer and broadleaf trees. Significant differences in leaf C:P were only observed between evergreen and deciduous trees, and significant differences in leaf N:P were observed between conifer and broadleaf trees. The relatively low N:P in all sampled trees indicated that N was a limiting factor in the distribution of natural P. yunnanensis forests. However, the higher leaf C:N and C:P ratios indicated that the P. yunnanensis natural forest ecosystem was in a relatively stable state.

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Bamboo Expansion and Soil Ecological Stoichiometry

Zhang

2023

Bamboo Expansion: Processes, Impacts, and Management

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Longitude gradient changes on plant community and soil stoichiometry characteristics of grassland in Hulunbeir

Cited by 10 publications

References 3 publications

Leaf nitrogen and phosphorus stoichiometry of the halophytes across China

Leaf nitrogen and phosphorus stoichiometry of the halophytes across China

Leaf Carbon, Nitrogen and Phosphorus Stoichiometry in a Pinus yunnanensis Forest in Southwest China

Bamboo Expansion and Soil Ecological Stoichiometry

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