Species diversity and interspecific association of trees in the Yaoluoping Nation Nature Reserve

Li, 王丽 Wang; Jinli, 常锦利 Chang; Shoubiao, 周守标 Zhou; Xiaoying, 王晓英 Wang; Jiaqi, 张佳期 Zhang; Shaokai, 闫少凯 Yan; Jinming, 张金铭 Zhang; Xin, 陈鑫 Chen; Xin, 赵昕 Zhao; Zhi, 王智 Wang

doi:10.5846/stxb201710271926

Cited by 5 publications

(2 citation statements)

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“…The α-diversity indicators selected in this study include the Margalef index (R), Shannon-Wiener index (H), Simpson index (H ′ ), and Pielou index (E) to estimate the diversity of the community structure, and the calculation formulas are as follows [46,48]:…”

Section: Discussionmentioning

confidence: 99%

Changing Dynamic of Tree Species Composition and Diversity: A Case Study of Secondary Forests in Northern China in Response to Climate Change

Liu,

Liao,

Chang

2024

Forests

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Climate warming is believed to have irreversible effects on biodiversity and ecosystem functions. Secondary forests are non-negligible ecosystems in northern China that have attracted much attention because of their instability and sensitivity to global change. However, there is no consensus on the impact of warming on secondary forest succession. In this study, we explored the response of tree species diversity to climate warming in northern secondary forests in China using a series of field surveys combined with annual meteorological data from 2015 to 2021. Our results indicate that the temperature in the study area increased in spring and autumn, while the precipitation increased in spring, summer, and autumn from 2015 to 2021. Changes in species composition in the study area and climate warming were significant in the northern region of China. The importance values of many broadleaf tree species increased, whereas those of local coniferous and broadleaf tree species decreased. The Shannon–Wiener, Simpson, and Margalef indices for the pure forest were significantly lower than those for the broadleaf mixed forest and the conifer–broadleaf mixed forest (p < 0.05) in 2015 and 2021. The highest value for the Pielou index was in the conifer–broadleaf mixed forest (p < 0.05), whereas it was not significantly different between the pure forest and broadleaf mixed forest in 2021. Surprisingly, the secondary broadleaf mixed forest in northern China showed an unfavorable degradation trend under the influence of climate change, just the same as the secondary pure forest. Our work provides an experimental data source for research on secondary forests under various climate change scenarios and is an important reference for predicting and dealing with the impact of global climate change on the adaptive management and protection of secondary ecosystems.

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Section: Discussionmentioning

confidence: 99%

Changing Dynamic of Tree Species Composition and Diversity: A Case Study of Secondary Forests in Northern China in Response to Climate Change

Liu,

Liao,

Chang

2024

Forests

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“…Interspecific association analysis, an important method for studying interspecific relationships, involves analyzing the spatial distribution of different species, which can reflect mutual attraction or repulsion among species in communities in different habitats; this approach is an important element of the study of speciation and community ecology ( Wang et al., 2019 ). In this study, young, mature, and old P. euphratica stands were mainly independent of each other in the riverside habitat, with no spatial correlation.…”

Section: Discussionmentioning

confidence: 99%

The spatial pattern of Populus euphratica competition based on competitive exclusion theory

Liu,

Zeng,

Wang

et al. 2024

Front. Plant Sci.

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IntroductionPopulation-level competition and spatial patterns may explain the role of competitive exclusion in communities, which is important for vegetation restoration and biodiversity conservation.MethodsWe analyzed the competitive intensity, spatial patterns, and renewal of Populus euphratica Oliv. forests in the Tarim River Basin using the Hegyi competition index and spatial point pattern analysis in a completely random model with different habitats and different forest ages. ResultsThe greatest competitive distance for P. euphratica was 10 m, and the intensity of competition steadily decreased as the diameter increased. The intensity of intraspecific and interspecific competition in young, mature, and old P. euphratica forests was as follows: riverside habitat > transitional habitat > desert margin habitat. The Simpson index values for the three habitats decreased as follows: transitional > riverside > desert margin, and the Shannon-Wiener index and Pielou index values decreased as follows: riverside > transitional > desert margin. In the riverside habitat, the young P. euphratica forest experienced the greatest competitive intensity, the mature forest in the transitional habitat was the largest, and the forest in the desert margin habitat was the oldest. Competitive intensity was greatest in the young riverside P. euphratica forest, mature P. euphratica forest in the transitional habitat, and old forest in the desert margin. Riverside P. euphratica experienced strong competition from Populus pruinosa. Competitive exclusion caused P. pruinosa to disappear from the transitional and desert margin habitats. Young, mature, and old P. euphratica forests were randomly distributed along the riverside and in the transitional habitat, while mature and old P. euphratica forests were randomly distributed in the desert margin. Populus pruinosa, Tamarix ramosissima, and Tamarix hispida were mainly randomly distributed, and T. ramosissima and T. hispida were clustered at small scales. In the riverside habitat, young, mature, and old P. euphratica had no spatial correlation, and there was a significant negative correlation at small scales in the transitional habitat. The density of P. euphratica seedlings in the riverside habitat was greater than that in the transitional habitat, and greater competitive pressures on P. euphratica tree seedlings caused a lower renewal density.ConclusionsWhen planting P. euphratica forests, spacing greater than 10 m can effectively reduce stand competition and thus promote seedling regeneration.

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One of the Core Leverages to Ensure the Applicability of Design Research: Design Parameters and Paths for Adjusting Design Parameters Through Research

WANG,

BAI

2024

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Species diversity and interspecific association of trees in the Yaoluoping Nation Nature Reserve

Cited by 5 publications

References 0 publications

Changing Dynamic of Tree Species Composition and Diversity: A Case Study of Secondary Forests in Northern China in Response to Climate Change

Changing Dynamic of Tree Species Composition and Diversity: A Case Study of Secondary Forests in Northern China in Response to Climate Change

The spatial pattern of Populus euphratica competition based on competitive exclusion theory

One of the Core Leverages to Ensure the Applicability of Design Research: Design Parameters and Paths for Adjusting Design Parameters Through Research

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