Patterns of plant species diversity along an altitudinal gradient and its effect on above-ground biomass in alpine meadows in Qinghai-Tibet Plateau

Liu, Zhe; Li, Qi; Chen, Dongdong; Wenting, Zhai; Zhao, Lu; Xu, Shixiao; Zhao, Xinquan

doi:10.17520/biods.2015043

Cited by 14 publications

(12 citation statements)

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“…The average annual temperature is 2.2-7.2°C, and the average annual sunshine hours are 2445-2904 h. The main dominant species are Kobresia humilis, K. macrontha, Elymus nutans, Potentilla fruticosa, and Stipa purpurea. The soil type is alpine meadow soil (Liu et al 2015).…”

Section: Sites Experimental Design and Samplingmentioning

confidence: 99%

“…The average altitude of the study area is above 4000 m. The main dominant species are S. arundinacea, Polygonum viviparum, Festuca ovina, and Leontopodium leontopodioides. The soil type is alpine meadow soil (Liu et al 2015).…”

Section: Sites Experimental Design and Samplingmentioning

confidence: 99%

“…The development and utilization of grassland resources need information about the yield and quality of forage along the altitude gradient. However, there were few studies on the impact of altitude on the yield and quality of forage resources in SJY, and the previous researches mainly focused on the variations of plant biomass, biodiversity, soil nutrients, and microbial community with altitude (Liu et al 2015;Lu 2013) or the nutrient content of a single species (Guo et al 2012;Han et al 1997;Xu et al 2002). The purpose of this study is to investigate the yield and quality of forage harvested in the two mountain belts of SJY, to analyze the relationship among forage yield and quality and environmental factors, and to assist local herdsmen to formulate strategies to improve the grazing management of alpine meadow.…”

Section: Introductionmentioning

confidence: 99%

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Variations of Forage Yield and Nutrients with Altitude Gradients and Their Influencing Factors in Alpine Meadow of Sanjiangyuan, China

Chen

Liu

et al. 2020

J Soil Sci Plant Nutr

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This study aimed to investigate the forage yield and quality and extract factors affecting them and provide scientific support for ecological protection of alpine grassland and sustainable development of animal husbandry in the Qinghai-Tibetan Plateau. Samples were collected in late August (peak of the growing season) 2014 in two mountain transects (Laji mountain, 36°21′ N, 101°27′ E, 3389-3876 m a.s.l. and Heitu mountain, 34°22′ N, 100°30′ E, 4121-4268 m a.s.l.) of Sanjiangyuan. Forage biomass and nutrients were measured by the national standard method, and influencing factors were extracted by RDA. Results showed that the forage yield decreased significantly with the increasing altitude, no matter in the mountain > 4000 m a.s.l. or < 4000 m a.s.l. Forage yield was more affected by environmental factors in low altitude areas, but less in high-altitude areas. Forage nutrients were mainly affected by altitude and soil organic carbon (SOC) (p < 0.01) on the mountain < 4000 m a.s.l., while on the mountain > 4000 m a.s.l., fiber and lignin were mainly affected by soil pH and SOC and crude protein (CP) by soil pH (p < 0.05) and total phosphorus (TP). Overall, with the increasing altitude, forage CP and fat (CF) increased, while neutral detergent fiber and acid detergent fiber decreased, implying that warming may lead to the decline of forage quality and then affect the safety of animal husbandry. Moreover, forage CP and CF were also affected by soil inorganic nitrogen and TP rather than SOC and soil total nitrogen.

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Section: Sites Experimental Design and Samplingmentioning

confidence: 99%

Section: Sites Experimental Design and Samplingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Variations of Forage Yield and Nutrients with Altitude Gradients and Their Influencing Factors in Alpine Meadow of Sanjiangyuan, China

Chen

Liu

et al. 2020

J Soil Sci Plant Nutr

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“…For the natural alpine meadow in HBAMERS, Liu et al. () noted that primary productivity was controlled by species richness, with the addition of nutrients generally increasing the proportion of Graminae biomass in the community which affected ecosystem functions (Deng et al., ; Yang, Ren, Zhou, & He, ). We specifically hypothesized that under control conditions either species richness or functional trait diversity explains plant N uptake and ecosystem N retention (i.e.…”

Section: Introductionmentioning

confidence: 99%

“…The main focus of our investigation was to examine how plant N uptake and retention was influenced by species richness, dominant leaf traits, trait functional diversity and divergence, thus testing species diversity, mass-ratio and functional diversity hypotheses. For the natural alpine meadow in HBAMERS, Liu et al (2015) noted that primary productivity was controlled by species richness, with the addition of nutrients generally increasing the proportion of Graminae biomass in the community which affected ecosystem functions (Deng et al, 2014;Yang, Ren, Zhou, & He, 2014). We specifically hypothesized that under control conditions either species richness or functional trait diversity explains plant N uptake and ecosystem N retention (i.e.…”

Section: Introductionmentioning

confidence: 99%

Ecosystem nitrogen retention is regulated by plant community trait interactions with nutrient status in an alpine meadow

et al. 2018

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Biotic nitrogen (N) retention is an important ecosystem function in the context of ongoing land‐use intensification, N deposition and global warming. However, a paucity of experimental evidence limits understanding of how different plant community components influence N retention in terrestrial ecosystems. In this investigation, we conducted a 15N labelling experiment to test how plant community properties, including plant species richness/diversity, dominance and functional traits, influence plant N uptake and retention under different nutrient availabilities. A 3‐year experiment examined the effects of adding N (10 g N m−2 year−1) and phosphorus (P) (5 g P m−2 year−1) to an alpine meadow on the Qinghai‐Tibetan Plateau. Results show that 15N retention increased with the addition of N and P; the addition of P produced the largest increase of 15N retention in plant and soil N pools. Changes in soil nutrient conditions also facilitated different plant community controls on ecosystem N retention. Ecosystem 15N retention was influenced by species richness and root biomass in the control plots; whereas the N addition treatment showed an important effect of community‐weighted means (CWM) of specific leaf area, and plots with additional P recorded lower CWM of root nitrogen content (root N) and larger CWM root:shoot ratios as important determinants. Synthesis. Ecosystem N retention was influenced by conservative and exploitative plant species and/or their traits under N deficient and abundant conditions, respectively, whereas species richness and community plant biomass were most influential under middle condition. The discovery of an interaction between plant community traits and nutrient biogeochemistry as a mechanism for ecosystem N retention offers a means to predict how vegetation in alpine meadow ecosystems will respond to expected global change.

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Eight-year warming might induce a shift toward forbs in an alpine meadow community of the Qinghai-Tibetan Plateau by increasing the soil temperature and nitrogen content

Xu,

Li,

Liu

et al. 2024

Environmental and Experimental Botany

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Patterns of plant species diversity along an altitudinal gradient and its effect on above-ground biomass in alpine meadows in Qinghai-Tibet Plateau

Cited by 14 publications

References 0 publications

Variations of Forage Yield and Nutrients with Altitude Gradients and Their Influencing Factors in Alpine Meadow of Sanjiangyuan, China

Variations of Forage Yield and Nutrients with Altitude Gradients and Their Influencing Factors in Alpine Meadow of Sanjiangyuan, China

Ecosystem nitrogen retention is regulated by plant community trait interactions with nutrient status in an alpine meadow

Eight-year warming might induce a shift toward forbs in an alpine meadow community of the Qinghai-Tibetan Plateau by increasing the soil temperature and nitrogen content

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