Investigating the long-term response of plateau vegetation productivity to extreme climate: insights from a case study in Qinghai Province, China

An, Hexuan; Song, Xiaoyan; Wang, Ziyin; Geng, Xubo; Zhou, Pingping; Zhai, Jun; Sun, Wenyi

doi:10.1007/s00484-023-02593-2

Cited by 2 publications

(2 citation statements)

References 56 publications

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“…Vegetation change caused by extreme climate represents the most urgent and significant consequences of climate change for both the economy and the environment. As a result, extensive research has been implemented for the sake of the impacts of extreme climate upon vegetation [12][13][14][15]; monitoring vegetation change and its response to climate extremes is essential to inform ecosystem mitigation responses [16].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, some scholars have improved the vegetation index and constructed a comprehensive index through multiple vegetation ecological indices to reflect the comprehensive growth of vegetation. At present, the study on vegetation NPP and FVC is still in the research and application phase of individual estimation methods [14,19], and few models and methods based on the two have been observed to estimate the overall ecological quality of vegetation [23]. In 2019, the China Meteorological Administration released the Land Vegetation Meteorological and Ecological Quality Monitoring and Evaluation Level, which introduced the Vegetation Ecological Quality Index (EQI) composed of the FVC and NPP as two key characteristic quantities to comprehensively reflect the overall condition of vegetation and ecosystems; by adjusting the weight coefficients of FVC and NPP, the EQI can be applied to different regions [24].…”

Section: Introductionmentioning

confidence: 99%

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Dynamic Changes in Vegetation Ecological Quality in the Tarim Basin and Its Response to Extreme Climate during 2000–2022

Zhang,

Lu,

Sun

et al. 2024

Forests

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The Tarim Basin is located in an arid inland area; the ecological environment is fragile, and it is extremely sensitive to climate change. For the purpose of studying dynamic changes in the vegetation response of vegetation in the Tarim Basin to extreme climate, this study used the Vegetation Ecological Quality Index (EQI) as a vegetation indicator and calculated 12 extreme climate indices using Rclimdex. Pearson correlation analysis was used to explore the relationship between EQI values and various extreme climate indices at both inter-annual and intra-annual scales. Additionally, geographic detector analysis was employed to examine the single and interactive effects of extreme climate on the EQI for different vegetation types. The following was found: (1) During 2000–2022, the EQI showed an upward trend in the Tarim Basin, and the increase in agricultural vegetation was the fastest. (2) Since 2000, the extreme warm temperature indices have risen, whereas the extreme cold temperature indices have declined. The warming rate of nighttime temperatures exceeds that of daytime, and the extreme precipitation rises intensively. Simultaneously, continuous dry days have also increased. (3) On an inter-annual scale, the EQI is primarily negatively correlated with the most extreme warm temperature indices, while it is positively correlated with extreme cold temperatures and extreme precipitation indices. On an intra-annual scale, there is an obvious regional concentration in the correlation between the EQI and extreme climate indices. The diurnal temperature range (DTR) and cold daytimes (TX10P) have inhibitory and promoting effects on areas with high and low EQI, respectively. The extremum indices, temperature warm indices, and precipitation intensity indices have a promoting effect on areas with a high EQI and an inhibiting effect on areas with a low EQI. The interaction between extreme climate indices has a greater impact on the EQI than the effect of a single extreme climate index, especially with a significant impact on forests and shrubs. This study provides a reference for the early warning of meteorological disasters, ecosystem protection, and sustainable management in the Tarim Basin.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dynamic Changes in Vegetation Ecological Quality in the Tarim Basin and Its Response to Extreme Climate during 2000–2022

Zhang,

Lu,

Sun

et al. 2024

Forests

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Study on the Characteristics of Flash Drought and the Response Regularity of Photosynthesis to Flash Drought in Different Vegetation Ecosystems in the Middle and Lower Reaches of the Yangtze River Basin.

Zhan,

Ma,

Yan

et al. 2024

Preprint

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In recent decades, flash drought events have frequently occurred in the humid regions of southern China. Due to the sudden onset and rapid intensification of these droughts, they often cause severe damage to vegetation photosynthesis. Our current understanding of the spatiotemporal evolution characteristics of flash droughts across different vegetation types remains limited. Moreover, insufficient consideration of the early stress of vegetation during flash droughts has constrained our understanding of the response regularity of vegetation photosynthesis to flash drought events. This study analyzes the spatial and temporal evolution characteristics of flash drought for different vegetation types in the middle and lower reaches of the Yangtze River Basin from 2000 to 2023. Using the flash drought event of 2013 as a case study, solar-induced chlorophyll fluorescence (SIF) and fluorescence yield (ΦF) were employed to further explore the Response Regularity of vegetation photosynthesis to flash drought. The results show that, over the past 24 years, the frequency of flash drought for different vegetation types in the middle and lower reaches of the Yangtze River Basin has decreased, but the total duration has increased, with forests experiencing a higher frequency of flash drought. Cropland photosynthesis is the most sensitive to flash drought, responding on the 10th day after the onset and reaching a negative anomaly by the 26th day. Forests and grasslands respond later, beginning on the 20th day and showing a negative anomaly by the 36th day. The findings of this study contribute to a deeper understanding of vegetation photosynthesis responses to flash drought and provide a reference for developing effective flash drought management strategies.

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Investigating the long-term response of plateau vegetation productivity to extreme climate: insights from a case study in Qinghai Province, China

Cited by 2 publications

References 56 publications

Dynamic Changes in Vegetation Ecological Quality in the Tarim Basin and Its Response to Extreme Climate during 2000–2022

Dynamic Changes in Vegetation Ecological Quality in the Tarim Basin and Its Response to Extreme Climate during 2000–2022

Study on the Characteristics of Flash Drought and the Response Regularity of Photosynthesis to Flash Drought in Different Vegetation Ecosystems in the Middle and Lower Reaches of the Yangtze River Basin.

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