Assessing the Dynamics of Grassland Net Primary Productivity in Response to Climate Change at the Global Scale

Liu, Yangyang; Yang, Young-Hoon; Wang, Qian; Khalifa, Muhammad; Zhang, Zhaoying; Tong, Linjing; Li, Jianlong; Shi, Aiping

doi:10.1007/s11769-019-1063-x

Cited by 18 publications

(13 citation statements)

References 52 publications

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“…In addition, the NPP of temperate meadow had a significantly positive relationship with precipitation in summer, confirming that moisture is the key limiting factor for vegetation growth in the arid temperate grassland region. Therefore, increased summer maximum temperature can adversely affect grasslands by increasing evaporation ( Liu et al, 2019 ). The negative correlation between grassland NPP and summer maximum temperature confirms our second hypothesis that the increase of daytime temperature may reduce the grassland NPP in warm season.…”

Section: Discussionmentioning

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.

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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.

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Section: Discussionmentioning

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.

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“…Although climate change has until now had relatively minor impacts on degradation, it is expected to become more important for degradation in the future (3, 4), exacerbating the effects of land-use change. Analyses of remotely sensed vegetation greenness (and vegetation browning) as well as model-based studies found that climate change has contributed to degradation chiefly in regions located around 15-45 o S, although studies disagree regarding the exact region of impact (36,60,61). Model-based estimates of NPP indicate that climate change is an important driver of degradation in approximately 35-45% of the world's degraded grasslands (36,61).…”

Section: Direct and Indirect Impacts Of Climate Changementioning

confidence: 99%

“…Analyses of remotely sensed vegetation greenness (and vegetation browning) as well as model-based studies found that climate change has contributed to degradation chiefly in regions located around 15-45 o S, although studies disagree regarding the exact region of impact (36,60,61). Model-based estimates of NPP indicate that climate change is an important driver of degradation in approximately 35-45% of the world's degraded grasslands (36,61). Attribution of climate change as a driver of degradation is made more difficult by concurrent increases in atmospheric CO 2 and the large regional variability in observed and projected climate trends.…”

Section: Direct and Indirect Impacts Of Climate Changementioning

confidence: 99%

Restoring Degraded Lands

Arneth

Olsson

Cowie

et al. 2021

Annu. Rev. Environ. Resour.

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Land degradation continues to be an enormous challenge to human societies, reducing food security, emitting greenhouse gases and aerosols, driving the loss of biodiversity, polluting water, and undermining a wide range of ecosystem services beyond food supply and water and climate regulation. Climate change will exacerbate several degradation processes. Investment in diverse restoration efforts, including sustainable agricultural and forest land management, as well as land set aside for conservation wherever possible, will generate co-benefits for climate change mitigation and adaptation and morebroadly for human and societal well-being and the economy. This review highlights the magnitude of the degradation problem and some of the key challenges for ecological restoration. There are biophysical as well as societal limits to restoration. Better integrating policies to jointly address poverty, land degradation, and greenhouse gas emissions and removals is fundamental to reducing many existing barriers and contributing to climate-resilient sustainable development.

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“…Global climate change has an extremely significant impact on surface vegetation cover. At the same time, the changing characteristics of surface vegetation cover will have corresponding feedback on regional climate and global climate systems [1][2][3][4]. As a key component of the terrestrial ecosystem [5,6], grassland is one of the most common vegetation types, providing various ecosystem and social service functions [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Quantitative Effects of Climate Change on Vegetation Dynamics in Alpine Grassland of Qinghai-Tibet Plateau in a County

et al. 2022

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Alpine grassland in the Qinghai-Tibet Plateau is known to be sensitive to climate change. To quantify the impacts of climate change on alpine ecosystems at small scale, Wulan County in Qinghai Province was taken as the research object, and the relationships between vegetation dynamics and climate changes and the direct and indirect effects of climate factors on vegetation dynamics were analyzed using the methods of ordinary least squares, Pearson correlation analysis and path analysis, on the basis of MOD13A3 data and meteorological data from 2001 to 2020. The results showed that the Normalized Difference Vegetation Index (NDVI) in the growing season of the county and 5 vegetation types showed similar fluctuation processes and relationships with climate factors during the study period. The growing season NDVI (GSN) of shrubland and desert steppe respectively were the highest and lowest. The yearly mean values of GSN over the county ranged from 0.151 to 0.264, and increased extremely significantly with years at a rate of 0.0035 yr−1. Spatially, GSN gradually decreased from northeast to southwest, and 97.2% of the county area showed an increasing trend in GSN. With years, growing season evaporation (GSE) decreased extremely significantly at a rate of 29.6 mm yr−1, while growing season average relative humidity (GSARH) showed a significant increasing trend at a rate of 0.16% yr−1. The correlations and effects of GSE, GSARH, and growing season precipitation (GSP) on vegetation dynamics were weakened in turn. GSE was the main direct effect factor, and the latter two were the indirect effect factors through GSE. The total contribution rates of GSE, GSARH and GSP to vegetation dynamics was about 78.0%. However, growing season average temperature (GSAT) had little effect on vegetation dynamics. This study provides information for understanding the characteristics of vegetation dynamics of alpine grassland in the Qinghai-Tibet Plateau at a small scale.

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Assessing the Dynamics of Grassland Net Primary Productivity in Response to Climate Change at the Global Scale

Cited by 18 publications

References 52 publications

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

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

Restoring Degraded Lands

Quantitative Effects of Climate Change on Vegetation Dynamics in Alpine Grassland of Qinghai-Tibet Plateau in a County

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