Effects of nutrient addition on degraded alpine grasslands of the Qinghai-Tibetan Plateau: A meta-analysis

Wang, Dangjun; Zhou, Huakun; Yao, Buqing; Wang, Wenying; Dong, Shikui; Shang, Zhanhuan; She, Yandi; Ma, Li; Huang, Xiaotao; Zhang, Zhonghua; Zhang, Qian; Zhao, Fengyu; Zuo, Juan; Mao, Zhun

doi:10.1016/j.agee.2020.106970

Cited by 41 publications

(37 citation statements)

References 47 publications

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“…Plant community productivity and soil C sequestration of grassland ecosystems are widely accepted to be nutrient limited, largely depending on the bioavailability of nitrogen (N) and phosphorus (P) (Elser et al, 2007 ; Ågren et al, 2012 ; Fay et al, 2015 ; Wieder et al, 2015 ). The availability of N has been deemed an essential determinant of the aboveground net primary productivity (ANPP) across terrestrial ecosystems, and N fertilization could promote plant N uptake and ultimately improve plant biomass production (Elser et al, 2007 ; LeBauer and Treseder, 2008 ; Borer et al, 2014 ; Fay et al, 2015 ; Wang et al, 2020 ). However, nutrient co-limitation of grassland productivity is common and more widely recognized (Ågren et al, 2012 ; Borer et al, 2014 ; Fay et al, 2015 ; Wang et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

“…The availability of N has been deemed an essential determinant of the aboveground net primary productivity (ANPP) across terrestrial ecosystems, and N fertilization could promote plant N uptake and ultimately improve plant biomass production (Elser et al, 2007 ; LeBauer and Treseder, 2008 ; Borer et al, 2014 ; Fay et al, 2015 ; Wang et al, 2020 ). However, nutrient co-limitation of grassland productivity is common and more widely recognized (Ågren et al, 2012 ; Borer et al, 2014 ; Fay et al, 2015 ; Wang et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

“…This phenomenon has caused a substantial increase in N and P bioavailability. These element depositions supply an important potential nutrient source for maintaining grassland primary productivity, which would be beneficial to the growth of plant community (Fay et al, 2015 ; Stevens et al, 2015 ; Zhu et al, 2016 ; Wang et al, 2020 ); however, the additional nutrient input might have adverse effects on plant community composition, structure, and alter ecosystem functionality (Phoenix et al, 2012 ; Penuelas et al, 2013 ; Zhu et al, 2016 ). In addition, the ongoing but imbalanced element depositions potentially induce limitation by other resources (Penuelas et al, 2013 ; Grace et al, 2016 ).…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the ongoing but imbalanced element depositions potentially induce limitation by other resources (Penuelas et al, 2013 ; Grace et al, 2016 ). Numerous studies have shown that N deposition could promote grassland ANPP, and highlighted the importance of N and P synergistic co-limitation in grasslands (Borer et al, 2014 ; Fay et al, 2015 ; Grace et al, 2016 ; Zhao et al, 2019 ; Wang et al, 2020 ). N and P fertilizers have received considerable attention in grassland restoration (Fay et al, 2015 ; Cerasoli et al, 2018 ; Wang et al, 2018 , 2020 ).…”

Section: Introductionmentioning

confidence: 99%

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Differential Responses of Plant Primary Productivity to Nutrient Addition in Natural and Restored Alpine Grasslands in the Qinghai Lake Basin

et al. 2021

Front. Plant Sci.

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Climate, land-use changes, and nitrogen (N) deposition strongly impact plant primary productivity, particularly in alpine grassland ecosystems. In this study, the differential responses of plant community primary productivity to N and phosphorus (P) nutrient application were investigated in the natural (NG) and “Grain for Green” restored (RG) alpine grasslands by a continuous 3-year experiment in the Qinghai Lake Basin. N addition only significantly promoted plant aboveground biomass (AGB) by 42% and had no significant effect on belowground biomass (BGB) and total biomass (TB) in NG. In comparison with NG, N addition elevated AGB and BGB concurrently in RG by 138% and 24%, respectively, which further significantly increased TB by 41% in RG. Meanwhile, N addition significantly decreased BGB and the AGB ratio (R/S) both in NG and RG. Compared with N addition, P addition did not perform an evident effect on plant biomass parameters. Additionally, AGB was merely negatively influenced by growing season temperatures (GST) under the N addition treatment in NG. AGB was negatively associated with GST but positively related to growing season precipitation (GSP) in RG. By contrast, changes in the R/S ratio in RG were positively correlated with GST and negatively related to GSP. In sum, the results revealed that plant community biomass exhibited convergent (AGB and R/S) and divergent (BGB and TB) responses to N addition between NG and RG. In addition, the outcomes suggested that climate warming would enhance plant biomass allocation to belowground under ongoing N deposition, and indicated the significance of precipitation for plant growth and AGB accumulation in this restored alpine grassland ecosystem.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Differential Responses of Plant Primary Productivity to Nutrient Addition in Natural and Restored Alpine Grasslands in the Qinghai Lake Basin

et al. 2021

Front. Plant Sci.

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“…The essence of the innovation consists in assessing the need not individually for each nutrient, but for their specially selected nutrient mixture [15]. The effectiveness of the innovation is confirmed by state tests using the Aquadonis device [16].…”

Section: Introductionmentioning

confidence: 99%

The use of micronutrient fertilizers in the cultivation of winter wheat

Гуреев

2021

BIO Web Conf.

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The aim of the research was to improve the technology for the production of winter wheat in Central Chernozem Region (CChR) by increasing the efficiency of the application of modern micronutrient fertilizers in conjunction with seed disinfectants and foliar dressing. To achieve this goal, the representative of FSBSI Kursk Federal Agricultural Research Center with the participation of specialists of Central Chernozem Machine Testing Station developed a technology and conducted field experiments on slightly leached medium loamy chernozem with pHKCl = 5.1 and humus content of 5.0%. For the first time on a scientific basis, a significant reserve for saving fertilizer resources has been realized through the use of synergy of interaction between nutrients. For this, the nomenclature and the ratio of the components of the nutritional mixture for foliar applications were established by an innovative method of functional foliar diagnostics using the Aquadonis device. Micronutrient fertilizer Aquamix ST (100 g/t) was applied to the seeds together with various seed disinfectants. As a control, we used a Lamador seed disinfectant (0.2 l /t), as well as new seed disinfectant: Scenic Combi (1.5 l/t), Baritone (1.5 l/t) + Nuprid (0.6 l/t) , Redigo (0.55 l/t) + Nuprid (0.6 l/t). Positive annual total cost savings of 119 rubles per 1 ton of produced grain was shown by the variant of seed treatment with a combination of Aquamix ST + Lamador. Other variants with the same agronomical efficiency, but with more expensive new seed disinfectants, turned out to be unprofitable. When evaluating the methods of foliar dressing, the highest yield of winter wheat at 3.98 t/ha was obtained using the innovative method of functional foliar diagnostics. The best indicators of the economic efficiency of the improved technology for the production of winter wheat were established in the variant of seed treatment Aquamix ST + Lamador with the application of foliar dressing using an innovative method. At the same time, the annual savings in total costs amounted to 476 rubles/t, which is 1.34 times higher than the variant with standard fertilizing with complex fertilizer Aquarin 5.

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Effect ofElymus nutans on the assemblage of arbuscular mycorrhizal fungal communities enhanced by soil available nitrogen in the restoration succession of revegetated grassland on theQinghai‐TibetanPlateau

et al. 2022

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The succession of arbuscular mycorrhizal fungi (AMF) communities during ecosystem development has received widespread attention, but the ecological mechanism that drives the succession of AMF communities during the restoration process in alpine meadow ecosystems remains unclear. Here, we treated 'Black Beach' (severely degraded alpine meadow) as the baseline for restoration (0 year), and selected the revegetated grassland of Elymus nutans with different planting times (3, 7, 10, and 14 years) to analyze the species composition of the AMF community in mixed roots (at the whole-plant-community scale) and in E. nutans roots (at the single-plantspecies scale). A total of 46 AMF phylotypes (mixed roots: 44; E. nutans roots: 46) were identified in both root systems, predominantly belonging to Glomeraceae. AMF species richness showed a single-peak curve change across the restoration time and reached its peak at 3 years in both root systems. In mixed roots, the soil available nitrogen not only directly changed the AMF species composition but also indirectly changed the AMF species composition through plant richness. In the E. nutans roots, only the soil available nitrogen drove changes in AMF species composition through changes in plant richness. Our results indicate that E. nutans, a key species in the restoration process of revegetated grassland, can enhance its regulation to assemble the AMF community through soil available nitrogen at the two research scales, suggesting that the scientific management of soil nitrogen availability during restoration succession could strengthen the mutual symbiosis of 'plant-AMF,' thereby retarding the occurrence of secondary degradation of revegetated grassland.

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Effects of nutrient addition on degraded alpine grasslands of the Qinghai-Tibetan Plateau: A meta-analysis

Cited by 41 publications

References 47 publications

Differential Responses of Plant Primary Productivity to Nutrient Addition in Natural and Restored Alpine Grasslands in the Qinghai Lake Basin

Differential Responses of Plant Primary Productivity to Nutrient Addition in Natural and Restored Alpine Grasslands in the Qinghai Lake Basin

The use of micronutrient fertilizers in the cultivation of winter wheat

Effect ofElymus nutans on the assemblage of arbuscular mycorrhizal fungal communities enhanced by soil available nitrogen in the restoration succession of revegetated grassland on theQinghai‐TibetanPlateau

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