Local Climatic Factors Mediated Impacts of Large-Scale Climate Oscillations on the Growth of Vegetation Across the Tibetan Plateau

Zhang, Lei; Shen, Miaogen; Shi, Chunming; Shi, Fangzhong; Jiang, Nan; Yang, Zhiyong; Ji, Zhenming

doi:10.3389/fenvs.2021.597971

Cited by 8 publications

(9 citation statements)

References 94 publications

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“…More specifically, the negative precipitation-NDVI GS correlation is found mainly for alpine meadows and shrubs, while the positive correlation is mainly for cold alpine steppe. Similar findings on the correlation patterns between NDVI GS and temperature and between NDVI GS and precipitation were also reported by Zhang et al (2021b) with a study period from 1982 to 2015. In addition, VPD is negatively correlated with NDVI GS across 58% (32% with p<0.05) of the TP, while the significantly negative correlation mainly appears in the southern and eastern regions (figure 5(c)).…”

Section: Partial Correlations Between Ndvi Gs and Climatic Driverssupporting

confidence: 89%

“…TP has undergone more rapid warming (0.5 °C decade −1 ), which is about twice the global average, than other places over the world (Yao, 2019). Rising temperatures (Zheng et al 2020, Zhang et al 2021b accompanied by the increased precipitation variability (Chen et al 2013, Du et al 2015, Li et al 2018 would have a marked influence on vegetation dynamics. Therefore, understanding the spatiotemporal changes of vegetation dynamics on the TP and the impact of climate change on it are crucial for assessing the impacts of anticipating future changes and developing adaptive ecosystem management measures (Li et al 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Precipitation increase has been shown to strengthen vegetation growth in the northeastern and southwestern TP (Du et al 2015, Li et al 2018 but impede it in the southeast region (Hua and Wang, 2018). More recently, evidence from observations reveals a clear impact of warming (Zhang et al 2021b) and wetting (Peng et al 2021) on vegetation processes over the TP. Aside from temperature and precipitation, vegetation growth on the TP has also been found to be affected by solar radiation , Peng et al 2021, wind speed (You et al 2010), and vapor pressure deficit (VPD) (Ding et al 2018).…”

Section: Introductionmentioning

confidence: 99%

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Responses of vegetation growth to climate change over the Tibetan Plateau from 1982 to 2018

Zhang

2022

Environ. Res. Commun.

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The Tibetan Plateau (TP) plays a critical role in Earth’s climate system and is highly sensitive to global warming. However, comprehensive analysis of the interaction between various climatic factors and vegetation growth across the TP is still limited. Using daily NDVI series interpolated from the 16-day satellite measurements and climatic data during 1982-2018, we investigated the spatiotemporal changes in growing season NDVI (NDVIGS) and associated climatic drivers over the TP and analyzed the responses of NDVIGS to climatic drivers for different vegetation types. Our results show that NDVIGS of the TP as a whole exhibits a significant rising trend (0.0011 year-1; P<0.01) from 1982 to 2018. However, trends in NDVIGS show apparent spatial heterogeneity over the TP with higher growth rates in forests (trend=0.012 de-1; P<0.01) and shrubs (trend=0.009 de-1; P<0.01) in the east and southeast than in alpine steppe (trend=0.003 de-1; P<0.01) and alpine meadow (trend=0.006 de-1; P<0.01) in the west and north. Air temperature, precipitation, and VPD serve as the dominant climatic factor affecting the NDVIGS trends in 62%, 19%, and 12% of the TP, respectively. Additionally, climatic factors show differential impacts on NDVIGS among different vegetation types. Air temperature has a predominantly positive correlation with NDVIGS for all vegetation types, while precipitation has a negative impact on plant growth in the eastern humid forest region but a generally postive impact in the other areas. Our results also highlight that the effect of VPD on NDVIGS varies among different vegetation types. These findings contribute to a systematic understanding of the possible mechanisms underlying the response of vegetation growth to various climatic drivers across the TP.

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Section: Partial Correlations Between Ndvi Gs and Climatic Driverssupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Responses of vegetation growth to climate change over the Tibetan Plateau from 1982 to 2018

Zhang

2022

Environ. Res. Commun.

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“…Meanwhile, the improvement of ecosystem organization and services should not be neglected, so as to optimize the regional ecological security pattern comprehensively. Since the high altitude and fragile ecological environment, the construction of ecological security and ecological protection in the QTP is very difficult to implement (Wang et al, 2021; Zhang, Shen, et al, 2021). The promotion of ecological security evoked by a single factor provides a good entry point for ecological protection work in similar regions.…”

Section: Discussionmentioning

confidence: 99%

Integrating ecosystem organization, quality and services indicators in the ecological security assessment

Wang

Peng

et al. 2023

Land Degrad Dev

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Ecological security is a vital component of regional security and significantly influences regional sustainable development. The assessment of ecological security is the cornerstone of relative research to coordinate ecological protection and economic developments. However, a framework that enables systematic assessment of the ecological security still needs further exploration. A framework that includes ecosystem organization (O), quality (Q), and services (S) was proposed to evaluate the ecological security in southeast Qinghai‐Tibet Plateau (QTP) in this study. Results showed that: (1) From 2000 to 2020, ecosystem organization in the study area showed an improving trend, with 61.33% of counties experiencing an increase in O value; (2) The ecosystem quality showed an increasing trend, with the proportion of increased areas amounting to 54.46%, and the significantly increased area occupied 3.38% of the study area; (3) The total trend of ecosystem services decreased, among them, habitat provision and soil conservation both presented an increasing trend, while water yield performed a decreased trend; (4) The ecological security in the southeast of QTP has been improved, which increased in north of the study area and decreased in south part. Overall, our study provided a novel view to characterize the physical status of the natural environment and enriched the methodology of ecological security assessment. More attention should be received by the different roles of ecosystem organization, quality, and services in ecological security in future studies, which is helpful to reflect the current situation and changing trends of regional ecological security more reasonably and comprehensively.

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“…Zhang et al found a consistent changing trend between the average cumulative precipitation in most parts of the Qinghai-Tibetan Plateau and the AMO index. The factors influencing RE in China are likely to be varied, encompassing temperature, rainfall, topographic characteristics, and large-scale atmospheric circulations, among others [95]. These elements do not exist in isolation but are frequently intertwined through atmospheric circulation and intricate physical processes and mechanisms.…”

Section: Re Related To Atmospheric Circulation Indicesmentioning

confidence: 99%

Spatiotemporal Variability in Rainfall Erosivity and Its Teleconnection with Atmospheric Circulation Indices in China

Liu,

Dong,

Liu

et al. 2023

Sustainability

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Rainfall erosivity (RE) is a critical factor influencing soil erosion, and soil erosion is closely related to land ecosystem health and long-term sustainable utilization. To ensure regional stable food supply and ecological balance, it is crucial to study the spatiotemporal distribution and influencing factors of RE. This study focuses on China and its three natural regions using daily precipitation data from 611 stations from 1960 to 2020. The study analyses the spatiotemporal changes in RE. Rainfall events were classified as moderate, large, and heavy based on rainfall intensity. The RE contribution from different rainfall levels to the total RE was analyzed, and the key climatic drivers closely linked to RE were identified using random forest. The results demonstrate that (1) on a national scale, RE shows a significant increasing trend, marked by an 81.67 MJ·mm·ha−1·h−1/decade. In the subregions, the Eastern Monsoon Region (EMR) and Qinghai–Tibet Plateau Region (QTR) show a significant increasing trend, with a greater change rate in EMR of 108.54 MJ·mm·ha−1·h−1/decade, and the Northwest Arid Region (NAR) shows a nonsignificant upwards trend. (2) The average RE increases northwest–southeast nationwide, ranging from 60.15 MJ·mm·ha−1·h−1 to 31,418.52 MJ·mm·ha−1·h−1. The RE contribution generated by different rainfall levels to the total RE exhibits spatial variations. The dominant types show that EMR is influenced by heavy RE, NAR is dominated by large RE, and QTR is affected by moderate RE. (3) The REs are associated with teleconnection indices, but the impact of these indices varies in different regions. The Western Hemisphere Warm Pool has the greatest impact on the EMR, while the North Atlantic Oscillation and Atlantic Multidecadal Oscillation are the factors influencing RE in NAR and QTR, respectively. (4) On a national scale, for every 1 mm increase in annual total rainfall, the RE increased by 8.54 MJ·mm·ha−1·h−1, a sensitivity of 8.54 MJ·mm·ha−1·h−1/mm. For the three subregions, there are differences in the sensitivity of RE to changes in annual precipitation. The highest sensitivity is found in EMR, at 8.71 MJ·mm·ha−1·h−1/mm, which is greater than the sensitivity indices in NAR (6.19 MJ·mm·ha−1·h−1/mm) and QTR (3.60 MJ·mm·ha−1·h−1/mm). This study can provide theoretical references for future regional soil erosion prediction and sustainable agricultural development in China.

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Local Climatic Factors Mediated Impacts of Large-Scale Climate Oscillations on the Growth of Vegetation Across the Tibetan Plateau

Cited by 8 publications

References 94 publications

Responses of vegetation growth to climate change over the Tibetan Plateau from 1982 to 2018

Responses of vegetation growth to climate change over the Tibetan Plateau from 1982 to 2018

Integrating ecosystem organization, quality and services indicators in the ecological security assessment

Spatiotemporal Variability in Rainfall Erosivity and Its Teleconnection with Atmospheric Circulation Indices in China

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