Query：
学者姓名：李林峰
Refining：
Year
Type
Indexed by
Source
Complex
Co-Author
Language
Clean All
Abstract ：
Foliar nitrogen (N) and phosphorus (P) concentrations are of critical importance to plant productivity. Despite global declines in plant diversity, their effects on tree foliar N and P dynamics remain uncertain, especially under different mycorrhizal types and soil nutrient conditions. Based on a large biodiversity experiment in subtropical China, we assessed how neighborhood species richness and functional dissimilarity influence foliar N and P concentrations across 794 tree individuals, comprising three arbuscular mycorrhizal (AM) and five ectomycorrhizal (EcM) tree species, along natural soil total N gradients. At the neighborhood scale, foliar nutrients were jointly influenced by functional dissimilarity, mycorrhizal type, and soil N availability. Among dissimilarity metrics, wood density (WD) dissimilarity was the strongest predictor. Specifically, functional dissimilarity consistently increased foliar N and P concentrations in AM trees across the soil total N level, whereas its effects on EcM trees shifted from positive to negative with increasing soil total N content. These diversity-driven increases in foliar P concentration were further associated with enhanced tree growth. Our findings demonstrate that mycorrhizal type and soil N availability jointly mediate effects of neighborhood diversity on tree foliar nutrient status, with foliar P concentration playing a pivotal role in driving productivity responses to biodiversity in subtropical forests.
Keyword ：
foliar N and P concentrations foliar N and P concentrations functional diversity effects functional diversity effects mycorrhizal types mycorrhizal types niche complementarity niche complementarity soil nutrient availability soil nutrient availability
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Zhao, Xue , Xu, Zhihong , Chen, Fulin et al. Mycorrhizal Type and Soil Nitrogen Content Coregulate Foliar Nutrient Responses to Neighborhood Functional Dissimilarity in Subtropical Forests [J]. | PLANT CELL AND ENVIRONMENT , 2025 , 49 (1) : 626-637 . |
| MLA | Zhao, Xue et al. "Mycorrhizal Type and Soil Nitrogen Content Coregulate Foliar Nutrient Responses to Neighborhood Functional Dissimilarity in Subtropical Forests" . | PLANT CELL AND ENVIRONMENT 49 . 1 (2025) : 626-637 . |
| APA | Zhao, Xue , Xu, Zhihong , Chen, Fulin , Wang, Tao , Lin, Qingyong , Yu, Zaipeng et al. Mycorrhizal Type and Soil Nitrogen Content Coregulate Foliar Nutrient Responses to Neighborhood Functional Dissimilarity in Subtropical Forests . | PLANT CELL AND ENVIRONMENT , 2025 , 49 (1) , 626-637 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
In alpine meadows, plants and soil microbes typically engage in competition for nitrogen (N) under N-deficient conditions. However, the acquisition and distribution of N among soil microbes and plants under alpine meadow degradation and climate warming induced by global climate change are still uncharacterized. In this study, we isotope labeled inorganic (NH4+-15N, NO3--15N) and organic (glycine-15N) N in both degraded and non-degraded plots by using open-top chambers (OTC) to mimic increasing air temperatures. After 6 h, the 15N contents in soil microbes and plants were measured to investigate the effects of degradation and rising air temperature on N allocations in the ecosystems studied. Results showed that alpine meadow degradation significantly reduced soil microbial N accumulation by 52% compared to those in non-degraded plots. In non-degraded plots, warming significantly lowered the organic N levels of soil microbes by 49%, whereas in degraded ones, it reduced both NH4+-15N and NO3--15N recovery by 80% and 45% on average but increased glycine-15N recovery by 653%. Meanwhile, warming decreased the plant recovery of NH4+-15N and NO3--15N by 75% and 45% but increased the recovery of glycine-15N by 45% in non-degraded plots. Conversely, in degraded plots, warming markedly lowered NH4+-15N recovery by 40% but increased glycine-15N recovery by 114%. Warming mitigates the effects of alpine meadow degradation on nitrogen allocation among soil microbes and plants. In unwarmed plots, degradation significantly elevated the total 15N recovery ratio of soil microbes to plants by 60%. However, in warmed plots, the impact of degradation on this ratio was reduced. The responses of the 15N recovery ratio of soil microbes and plants to rising temperatures were closely related to alpine meadow quality. In non-degraded areas, warming enhanced the recovery ratio for NH4+-15N by 165% but reduced it for glycine-15N by 66%. Conversely, in degraded plots, warming decreased the recovery ratio for NH4+-15N by 66% but increased it for glycine-15N by 232%. This indicates that warming can increase carbon limitation for soil microbes in degraded alpine meadows, and the restoration of degraded alpine meadows should prioritize restoring carbon accumulation.
Keyword ：
degradation degradation inorganic N inorganic N N partitioning N partitioning organic N organic N Tibetan Plateau Tibetan Plateau warming warming
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Pang, Zhe , Wen, Guoqi , Jiang, Lili et al. Warming Mitigates the Impacts of Degradation on Nitrogen Allocation between Soil Microbes and Plants in Alpine Meadow [J]. | AGRONOMY-BASEL , 2024 , 14 (3) . |
| MLA | Pang, Zhe et al. "Warming Mitigates the Impacts of Degradation on Nitrogen Allocation between Soil Microbes and Plants in Alpine Meadow" . | AGRONOMY-BASEL 14 . 3 (2024) . |
| APA | Pang, Zhe , Wen, Guoqi , Jiang, Lili , Nie, Xiaowei , Wang, Zongsong , Pang, Rui et al. Warming Mitigates the Impacts of Degradation on Nitrogen Allocation between Soil Microbes and Plants in Alpine Meadow . | AGRONOMY-BASEL , 2024 , 14 (3) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
1. Droughts can affect ecosystem CO2 fluxes directly or indirectly by changing plant community composition. However, it is unknown whether shifts in plant community composition buffer or amplify the response of ecosystem CO2 fluxes to droughts with different seasonal timing, as plant phenology and physiology of the different plant functional types respond differently to droughts. 2. To identify the interaction of drought timing and plant community composition in regulating ecosystem CO2 fluxes, we conducted a three-year manipulative experiment in which extreme droughts occurring in the early, mid and late growing seasons were separately imposed on experimental plot communities comprising graminoids, shrubs and their combination in a semi-arid grassland of Inner Mongolia, China. 3. Overall, mid-season drought caused the largest negative effects regardless of plant community composition. In addition to decreasing aboveground biomass, mid-season drought suppressed fluxes by reducing leaf photosynthetic rate, while early-season and late-season drought reduced fluxes mainly by shortening growing season length. All three community compositions had consistent responses to early-season and mid-season droughts. However, ecosystem CO2 fluxes in the combination community were less negatively affected by late-season drought than in either shrub or graminoid communities because the growing season length was shortened less. 4. Synthesis. Our results highlight that it is important to account for interactions of seasonal timing and plant community composition when predicting magnitude and pathways of drought effects on ecosystem carbon cycling.
Keyword ：
carbon cycling carbon cycling climate extremes climate extremes drought drought phenology phenology physiology physiology plant functional type plant functional type seasonal timing seasonal timing
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Zheng, Zhenzhen , Li, Linfeng , Biederman, Joel A. et al. Ecosystem CO2 flux responses to extreme droughts depend on interaction of seasonal timing and plant community composition [J]. | JOURNAL OF ECOLOGY , 2024 , 112 (10) : 2198-2211 . |
| MLA | Zheng, Zhenzhen et al. "Ecosystem CO2 flux responses to extreme droughts depend on interaction of seasonal timing and plant community composition" . | JOURNAL OF ECOLOGY 112 . 10 (2024) : 2198-2211 . |
| APA | Zheng, Zhenzhen , Li, Linfeng , Biederman, Joel A. , Wang, Yanfen , Guan, Shuntian , Li, Congjia et al. Ecosystem CO2 flux responses to extreme droughts depend on interaction of seasonal timing and plant community composition . | JOURNAL OF ECOLOGY , 2024 , 112 (10) , 2198-2211 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Increasingly frequent and severe droughts are occurring in multiple seasons of a year in many dryland ecosystems, with unknown impacts on the role of drylands in cycling of methane (CH4), a potent greenhouse gas. In particular, there is limited understanding of how drought occurring at different times within the growing season regulates biological CH4 uptake, and how these responses are mediated by plant community composition. Here, we quantify how drought timing and plant community composition regulate CH4 uptake in a semiarid grassland. We employ a field experiment in which droughts were imposed in early, middle, or late growing season in three different communities (two graminoids, two shrubs and their mixture), respectively. All three droughts increased CH4 uptake, but the effect size and pathway varied with seasonal timing. Early and middle drought increased CH4 uptake through increasing both soil pomA abundance and diffusivity resulting from reduced soil water content (SWC), while late drought increased CH4 uptake only by reducing SWC. Overall, early drought had the least positive effects on CH4 uptake because it excluded the least precipitation and therefore had smaller impacts on SWC. Besides, plant composition did not affect CH4 uptake under normal environment but regulated CH4 uptake in response to droughts due to different response of plant composition to droughts. Early and middle drought had larger positive effects on CH4 uptake in shrub communities than the other two communities, consistent with larger reductions in SWC and larger increases in pomA abundance, respectively. In contrast, late drought had consistent effects on CH4 uptake across three communities. Our results suggest that the magnitude and pathways of extreme drought effects on CH4 uptake are strongly co-regulated by seasonal timing and plant composition.
Keyword ：
CH4 CH4 Climate extremes Climate extremes Community composition Community composition Drought timing Drought timing Greenhouse gases Greenhouse gases Methanotrophs Methanotrophs
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Zheng, Zhenzhen , Wen, Fuqi , Biederman, Joel A. et al. Methane uptake responses to extreme droughts regulated by seasonal timing and plant composition [J]. | CATENA , 2024 , 237 . |
| MLA | Zheng, Zhenzhen et al. "Methane uptake responses to extreme droughts regulated by seasonal timing and plant composition" . | CATENA 237 (2024) . |
| APA | Zheng, Zhenzhen , Wen, Fuqi , Biederman, Joel A. , Tudi, Muyesaier , Lv, Mengbo , Xu, Shaorui et al. Methane uptake responses to extreme droughts regulated by seasonal timing and plant composition . | CATENA , 2024 , 237 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Export
| Results： |
Selected to |
| Format： |
