Patterns of species and phylogenetic diversity in Picea purpurea forests under different levels of disturbance on the northeastern Qinghai-Tibetan Plateau
Picea purpurea is a endemic species to China and a main component of subalpine dark coniferous forests on the northeastern Qinghai-Tibetan Plateau (QTP). In this study, twenty-four plots (20 × 30 m) were established in the natural distribution area of P. purpurea and categorized into three disturban...
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| Format: | Article |
| Language: | English |
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Elsevier
2021-10-01
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| Series: | Global Ecology and Conservation |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2351989421003292 |
| _version_ | 1818361022576066560 |
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| author | Jia-Hao Cao Rui Qi Ting Liu Bo Li Ben-Qiang Gao Xue-Long Chen Yang Zhao Zhi-Gang Zhao |
| author_facet | Jia-Hao Cao Rui Qi Ting Liu Bo Li Ben-Qiang Gao Xue-Long Chen Yang Zhao Zhi-Gang Zhao |
| author_sort | Jia-Hao Cao |
| collection | DOAJ |
| description | Picea purpurea is a endemic species to China and a main component of subalpine dark coniferous forests on the northeastern Qinghai-Tibetan Plateau (QTP). In this study, twenty-four plots (20 × 30 m) were established in the natural distribution area of P. purpurea and categorized into three disturbance levels (mild, moderate, and severe). The correlations among species richness (SR), phylogenetic diversity (PD) and net relatedness index (NRI) were investigated though ordinary least squares (OLS) regression and the differences in the SR and PD among disturbance levels were analyzed via one-way analysis of variance. The results showed that the SR was positively correlated with the PD (R2 =0.935, p < 0.001) and that the differences in the SR and PD among the different disturbance levels were significant (p < 0.001), with increasing the degree of disturbance, the SR increased firstly and then decreased. The effects of environmental factors (including disturbances) on the PD and phylogenetic structure were analysed with SEM (structural equation modeling) and showed that the PD of all plants and woody plants was affected directly by actual evapotranspiration, slope position, soil total nitrogen and available phosphorus jointly, indirect affected by disturbance with altering soil chemistry, the PD of herbaceous plants was affected mainly by microhabitat features (i.e., slope position). The overall phylogenetic structures of all plants and woody plants showed trends of overdispersion, and environmental factors had little explanatory power with respect to the NRI values, indicating that the phylogenetic structures of these plant groups were not dominated by environmental filtering. But in herbaceous plants, environmental factors had strong explanatory power with respect to the NRI, and environmental filtering played an important role in controlling the phylogenetic structure of herbaceous plants. |
| first_indexed | 2024-12-13T21:10:05Z |
| format | Article |
| id | doaj.art-9820e009f23f4177810f0091c8616ceb |
| institution | Directory Open Access Journal |
| issn | 2351-9894 |
| language | English |
| last_indexed | 2024-12-13T21:10:05Z |
| publishDate | 2021-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Global Ecology and Conservation |
| spelling | doaj.art-9820e009f23f4177810f0091c8616ceb2022-12-21T23:31:23ZengElsevierGlobal Ecology and Conservation2351-98942021-10-0130e01779Patterns of species and phylogenetic diversity in Picea purpurea forests under different levels of disturbance on the northeastern Qinghai-Tibetan PlateauJia-Hao Cao0Rui Qi1Ting Liu2Bo Li3Ben-Qiang Gao4Xue-Long Chen5Yang Zhao6Zhi-Gang Zhao7State Key Laboratory of Grassland Agro-ecosystems, School of Life Sciences, LanZhou University, Lanzhou 730000, China; Institute of Forestry Science of Bailongjiang in Gansu Province, Lanzhou 730046, China; Gansu Bailongjiang National Forest Ecosystem Research Station, Zhouqu 746300, ChinaInstitute of Forestry Science of Bailongjiang in Gansu Province, Lanzhou 730046, China; Gansu Bailongjiang National Forest Ecosystem Research Station, Zhouqu 746300, ChinaInstitute of Forestry Science of Bailongjiang in Gansu Province, Lanzhou 730046, China; Gansu Bailongjiang National Forest Ecosystem Research Station, Zhouqu 746300, ChinaInstitute of Forestry Science of Bailongjiang in Gansu Province, Lanzhou 730046, China; Gansu Bailongjiang National Forest Ecosystem Research Station, Zhouqu 746300, ChinaInstitute of Forestry Science of Bailongjiang in Gansu Province, Lanzhou 730046, China; Gansu Bailongjiang National Forest Ecosystem Research Station, Zhouqu 746300, ChinaInstitute of Forestry Science of Bailongjiang in Gansu Province, Lanzhou 730046, China; Gansu Bailongjiang National Forest Ecosystem Research Station, Zhouqu 746300, ChinaInstitute of Forestry Science of Bailongjiang in Gansu Province, Lanzhou 730046, China; Gansu Bailongjiang National Forest Ecosystem Research Station, Zhouqu 746300, ChinaState Key Laboratory of Grassland Agro-ecosystems, School of Life Sciences, LanZhou University, Lanzhou 730000, China; Corresponding author.Picea purpurea is a endemic species to China and a main component of subalpine dark coniferous forests on the northeastern Qinghai-Tibetan Plateau (QTP). In this study, twenty-four plots (20 × 30 m) were established in the natural distribution area of P. purpurea and categorized into three disturbance levels (mild, moderate, and severe). The correlations among species richness (SR), phylogenetic diversity (PD) and net relatedness index (NRI) were investigated though ordinary least squares (OLS) regression and the differences in the SR and PD among disturbance levels were analyzed via one-way analysis of variance. The results showed that the SR was positively correlated with the PD (R2 =0.935, p < 0.001) and that the differences in the SR and PD among the different disturbance levels were significant (p < 0.001), with increasing the degree of disturbance, the SR increased firstly and then decreased. The effects of environmental factors (including disturbances) on the PD and phylogenetic structure were analysed with SEM (structural equation modeling) and showed that the PD of all plants and woody plants was affected directly by actual evapotranspiration, slope position, soil total nitrogen and available phosphorus jointly, indirect affected by disturbance with altering soil chemistry, the PD of herbaceous plants was affected mainly by microhabitat features (i.e., slope position). The overall phylogenetic structures of all plants and woody plants showed trends of overdispersion, and environmental factors had little explanatory power with respect to the NRI values, indicating that the phylogenetic structures of these plant groups were not dominated by environmental filtering. But in herbaceous plants, environmental factors had strong explanatory power with respect to the NRI, and environmental filtering played an important role in controlling the phylogenetic structure of herbaceous plants.http://www.sciencedirect.com/science/article/pii/S2351989421003292Coniferous forestsForest biodiversityEnvironmental filteringPhylogenetic overdispersionSpecies richnessLogging and grazing |
| spellingShingle | Jia-Hao Cao Rui Qi Ting Liu Bo Li Ben-Qiang Gao Xue-Long Chen Yang Zhao Zhi-Gang Zhao Patterns of species and phylogenetic diversity in Picea purpurea forests under different levels of disturbance on the northeastern Qinghai-Tibetan Plateau Global Ecology and Conservation Coniferous forests Forest biodiversity Environmental filtering Phylogenetic overdispersion Species richness Logging and grazing |
| title | Patterns of species and phylogenetic diversity in Picea purpurea forests under different levels of disturbance on the northeastern Qinghai-Tibetan Plateau |
| title_full | Patterns of species and phylogenetic diversity in Picea purpurea forests under different levels of disturbance on the northeastern Qinghai-Tibetan Plateau |
| title_fullStr | Patterns of species and phylogenetic diversity in Picea purpurea forests under different levels of disturbance on the northeastern Qinghai-Tibetan Plateau |
| title_full_unstemmed | Patterns of species and phylogenetic diversity in Picea purpurea forests under different levels of disturbance on the northeastern Qinghai-Tibetan Plateau |
| title_short | Patterns of species and phylogenetic diversity in Picea purpurea forests under different levels of disturbance on the northeastern Qinghai-Tibetan Plateau |
| title_sort | patterns of species and phylogenetic diversity in picea purpurea forests under different levels of disturbance on the northeastern qinghai tibetan plateau |
| topic | Coniferous forests Forest biodiversity Environmental filtering Phylogenetic overdispersion Species richness Logging and grazing |
| url | http://www.sciencedirect.com/science/article/pii/S2351989421003292 |
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