Effects of land use and climate on carbon and nitrogen pool partitioning in European mountain grasslands

Seeber, Julia; Tasser, Erich; Rubatscher, Dagmar; Loacker, Ingrid; Robson, T. Matthew; Balzarolo, Manuela; Altimir, Núria; Drösler, Matthias; Vescovo, L.; Gamper, Sonja; Barančok, Peter; Staszewski, Tomasz; Wohlfahrt, Georg; Cernusca, Alexander; Sebastià, Maria‐Teresa; Tappeiner, Ulrike; Bahn, Michael

doi:10.1016/j.scitotenv.2022.153380

Cited by 15 publications

(4 citation statements)

References 102 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although the difference in soil moisture between the PV arrays and the Ambient zones in this study did not reach a significant level, soil moisture in the PV arrays was still higher than in the Ambient (Figure b). The pH of the soil in Under is significantly higher than that in Ambient, which may be because the increase in soil moisture reduces the soil oxygen content and promotes denitrification, thereby increasing the soil pH (Figure c). − The increase in pH from PV arrays may strongly increase the soil P fixation by calcium to reduce the soil AP (Figure i). , In addition, the alteration of soil pH could influence soil nutrient fixation and cause a difference in the soil C/N ratio (Figure d–f) between the PV arrays and the Ambient zones. , No significant change in NH 4 + –N inside and outside the PV array (Figure g). Plant uptake of negatively charged NO 3 – –N is affected by the flow of soil water in the roots, which explains the higher NO 3 – –N in areas with high water content (Figure h). , We found that the effect of PV arrays on vegetation characteristics was manifested in the Forb community and the A.…”

Section: Resultsmentioning

confidence: 99%

“…69,70 In addition, the alteration of soil pH could influence soil nutrient fixation and cause a difference in the soil C/N ratio (Figure 3d−f) between the PV arrays and the Ambient zones. 70,71 No significant change in NH 4 + −N inside and outside the PV array (Figure 3g). Plant uptake of negatively charged NO 3 − −N is affected by the flow of soil water in the roots, which explains the higher NO 3 − −N in areas with high water content (Figure 3h).…”

Section: ■ Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ignoring the Effects of Photovoltaic Array Deployment on Greenhouse Gas Emissions May Lead to Overestimation of the Contribution of Photovoltaic Power Generation to Greenhouse Gas Reduction

Zhang

et al. 2023

Environ. Sci. Technol.

View full text Add to dashboard Cite

Photovoltaic (PV) power generation is one of the world's most promising options for carbon emission reduction. However, whether the operation period of solar parks can increase greenhouse gas (GHG) emissions in hosting natural ecosystems has not been fully considered. Here, we conducted a field experiment to compensate for the lack of evaluation of the effects of PV array deployment on GHG emissions. Our results show that the PV arrays caused significant differences in air microclimate, soil properties, and vegetation characteristics. Simultaneously, PV arrays had more significant effects on CO 2 and N 2 O emissions but a minor impact on CH 4 uptake in the growing season. Of all the environmental variables included, soil temperature and moisture were the main drivers of GHG flux variation. The sustained flux global warming potential from the PV arrays significantly increased by 8.14% compared to the ambient grassland. Our evaluation models identified that the GHG footprint of PV arrays during the operation period on grasslands was 20.62 g CO 2 -eq kW h −1 . Compared with our model estimates, GHG footprint estimates reported in previous studies were generally less by 25.46−50.76%. The contribution of PV power generation to GHG reduction may be overestimated without considering the impact of PV arrays on hosting ecosystems.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Ignoring the Effects of Photovoltaic Array Deployment on Greenhouse Gas Emissions May Lead to Overestimation of the Contribution of Photovoltaic Power Generation to Greenhouse Gas Reduction

Zhang

et al. 2023

Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Plant consumption by grazing might lead to the loss of plant biomass directly. Meanwhile, the loss resulted in reduced litter production that suppressed carbon and nitrogen inputs to below‐ground processes (Bai et al, 2022; Seeber et al, 2022), and a larger bare area promoted the evaporation of soil moisture, thus resulted in the decreased plant regrowth rates (Sitters et al, 2020). We found negative responses of above‐ground biomass and leaf area to grazing intensity, and significantly lower above‐ground biomass under heavy grazing (Figures 2 and 5).…”

Section: Discussionmentioning

confidence: 99%

Grazing mediates the biodiversity effects on multifunctionality in grasslands

Yan,

Ding,

Wang

et al. 2023

Land Degrad Dev

View full text Add to dashboard Cite

Biodiversity loss by grazing pressure has threatened multiple ecosystem functions simultaneously (ecosystem multifunctionality, EMF) in grasslands. Therefore, detecting the relation between EMF and biodiversity under human intervention would provide guidance on the optimization of sustainable grassland management. However, little is known about how grazing effects grassland EMF by mediating biodiversity under different grazing intensities. Here, species and functional diversity were investigated along a longitudinal gradient in Inner Mongolia grassland, and its EMF was quantified comprehensively on six ecosystem functions by an averaging approach, threshold approach and multiple threshold approach to assess the impact of grazing intensity on EMF. There was a significantly lower average EMF index and above‐ground biomass under heavy grazing (HG) than under light grazing (LG). The threshold approach‐based EMF and average EMF index were positively related to species diversity and functional diversity, and species diversity was a stronger driver of EMF than functional diversity. Compared with LG, the slope of the positive relation between EMF and species diversity significantly weakened by 40%–86% under moderate grazing (MG) and decreased by 30%–100% under HG, and reversed to a negative relation between functional diversity and EMF under HG. Additionally, species diversity was more negatively influenced by soil pH and sand content, while functional diversity was more negatively influenced by grazing intensity, indicating that functional diversity was more sensitive to intensive grazing. This study highlights the role of grazing intensity for driving multiple ecosystem functions, and reinforces the significance of managing both species diversity and functional diversity for sustaining productive functional grasslands.

show abstract

“…Grassland ecosystems play a key role in regulating the carbon cycle and maintaining ecological balance ( Bengtsson et al, 2019 ; Hoover et al, 2022 ; Shen et al, 2022a , b ). Net primary productivity (NPP) is not only a crucial indicator of carbon sequestration ( Zhang et al, 2016 ; Hossain et al, 2021 ), but also a key reference for assessing grassland ecosystem function ( Seeber et al, 2022 ; Wang et al, 2022 ). Previous studies have shown that climate change has significant effects on grassland NPP ( Liu et al, 2021 ; Xiong et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal Change of Net Primary Productivity and Its Response to Climate Change in Temperate Grasslands of China

Xia

Liu

et al. 2022

Front. Plant Sci.

View full text Add to dashboard Cite

The temperate grasslands in China play a vital part in regulating regional carbon cycle and climate change. Net primary productivity (NPP) is a crucial index that reflects ecological function of plants and the carbon sequestration capacity of grassland ecosystem. Climate change can affect NPP by changing vegetation growth, but the effects of climate change on the NPP of China’s temperate grasslands remain unclear. Based on MODIS data and monthly climate data during 2000–2020, this study explored the spatiotemporal changes in grassland NPP and its response to climate change in temperate grasslands of China. We found that the annual NPP over the entire China’s temperate grasslands increased significantly by 4.0 gC/m2/year from 2000 to 2020. The annual NPP showed increasing trends for all the different grassland vegetation types, with the smallest increase for temperate desert steppe (2.2 gC/m2/year) and the largest increase for temperate meadow (5.4 gC/m2/year). The correlation results showed that increased annual precipitation had a positive relationship with the NPP of temperate grasslands. Increased summer and autumn precipitation could increase grassland NPP, particularly for the temperate meadow. With regard to the effects of temperatures, increased temperature, particularly the summer maximum temperature, could decrease annual NPP. However, increased spring minimum temperature could increase the NPP of temperate desert steppe. In addition, this study found, for the first time, an asymmetric relationship between summer nighttime and daytime warming and the NPP of temperate meadow. Specifically, nighttime warming can increase NPP, while daytime warming can reduce NPP in temperate meadow. Our results highlight the importance of including seasonal climate conditions in assessing the vegetation productivity for different grassland types of temperate grasslands and predicting the influences of future climate change on temperate grassland ecosystems.

show abstract

Effects of land use and climate on carbon and nitrogen pool partitioning in European mountain grasslands

Cited by 15 publications

References 102 publications

Ignoring the Effects of Photovoltaic Array Deployment on Greenhouse Gas Emissions May Lead to Overestimation of the Contribution of Photovoltaic Power Generation to Greenhouse Gas Reduction

Ignoring the Effects of Photovoltaic Array Deployment on Greenhouse Gas Emissions May Lead to Overestimation of the Contribution of Photovoltaic Power Generation to Greenhouse Gas Reduction

Grazing mediates the biodiversity effects on multifunctionality in grasslands

Spatiotemporal Change of Net Primary Productivity and Its Response to Climate Change in Temperate Grasslands of China

Contact Info

Product

Resources

About