Increasing climate sensitivity of subtropical conifers along an aridity gradient

Gou, Xiaohua; HilleRisLambers, Janneke; Deng, Yang; Fan, Haowen; Zheng, Wenjuan; Zhang, Ruibo; Manzanedo, Rubén D.

doi:10.1016/j.foreco.2020.118841

Cited by 22 publications

(8 citation statements)

References 43 publications

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“…Hence, warming and increasing atmospheric drought at our study sites can lead to a decline in tree growth. Our results are consistent with studies by Su et al (2021) and Huang et al (2021), where drought contributed to the decline of forests in subtropical regions. Firstly, drought stress reduces leaf size, stem extension, and root proliferation, disturbs plant water relations, and reduces water-use efficiency (Farooq et al, 2009;Allen et al, 2015).…”

Section: Tree Growth Decline In Subtropical Forestsupporting

confidence: 93%

“…In the last decade, an increasing number of tree-ring studies have been carried out in subtropical regions (Liang et al, 2019;Su et al, 2021;Sharma et al, 2022;Yang et al, 2022a). Many studies conducted in subtropical regions ecosystems suggest that drought stress caused by regional warming has caused vegetation shifts (Allen et al, 2010), increased tree mortality (Allen et al, 2015), increased die-off of some species (Breshears et al, 2005), decreased tree radial growth (Sharma et al, 2022), and decreased carbon sequestration in vegetation (Brienen et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

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Warming-induced drought leads to tree growth decline in subtropics: Evidence from tree rings in central China

et al. 2022

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Subtropical forests provide diverse ecosystem services to human society. However, how subtropical tree species respond to climate change is still unclear. Using a dendrochronological method, we studied the radial growth patterns and species-specific responses of four main tree species in subtropical China to recent warming and drought. Results showed that the long-term drought caused by global warming and reduced precipitation since 1997 had resulted in the growth decline of Pinus massoniana, Castanea henryi and Castanopsis eyrei but not for Liquidambar formosana. Four species had similar sensitivities to the previous year and the current year, which is probably due to the carryover effect and temporal autocorrelation of climate data. Tree growth was positively correlated with growing season precipitation and relative humidity while negatively correlated with vapor pressure deficit. The negative relationship of tree radial growth with temperatures in the previous and current summer and the positive correlation with precipitation gradually strengthened after 1997. Therefore, we highlighted that drought-induced tree decline in subtropical forests is probably a common phenomenon, and it needed to verify by more tree-ring studies on a large scale. The species-specific responses of tree radial growth to climate change are not obvious, but they still should be considered in regional carbon balance and forest dynamics. Considering future climate change, species that are more drought tolerant should be considered as potential plantation species.

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Section: Tree Growth Decline In Subtropical Forestsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Warming-induced drought leads to tree growth decline in subtropics: Evidence from tree rings in central China

et al. 2022

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“…The underlying mechanisms and drivers of drought can be complex and are potentially dependent on the background aridity that regulates the type of control (energy‐limited or water‐limited) on surface evaporation over a region (Forzieri et al., 2020; Mukherjee et al., 2018; Mukherjee & Mishra, 2021; Seneviratne et al., 2010; Su et al., 2021). As such, it is essential to understand the effect of background aridity on the (a) association between RZSM and ESR specific to all FD episodes and (b) uncertainties associated with the key drivers of FDs, represented by two distinct FD indicators (ESR and RZSM).…”

Section: Resultsmentioning

confidence: 99%

Global Flash Drought Analysis: Uncertainties From Indicators and Datasets

Mukherjee

Mishra

2022

Earth's Future

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Drought is a complex and extreme climatic condition leading to significant impact on water availability, socio-economic systems, and environmental sustainability (A. K. Mishra & Singh, 2010;Mukherjee et al., 2018). Flash droughts (FDs), unlike slow evolving drought events, are characterized by sudden and rapid intensification within a few pentads or weeks. The FD events are generally unforeseen and can cause devastating socio-economic impacts quickly (

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“…Therefore, soil is an important shelter of EF and a pathogen pool of insects as well. However, soil environments undoubtedly are influenced by the human activities under rapid development of society and economy, and impacted by the constantly climatic changes [8]. These factors could affect the EFs distribution and persistence in soil [9,10].…”

Section: Introductionmentioning

confidence: 99%

Entomopathogenic Fungi Biodiversity in the Soil of Three Provinces Located in Southwest China and First Approach to Evaluate Their Biocontrol Potential

Chen

Xie

Cai

et al. 2021

JoF

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Entomopathogenic fungi (EF), who represent active agents to control insect natural populations, usually persist in terrestrial habitats. Southwest area in China has various climate conditions and abundant plant biodiversity (crop, forest, grassy, orchard and arable areas). Nevertheless, the potential of soil-inhabitant EF as insect pest biocontrol agents, is unknown. In this study, first the EF biodiversity from soil of three provinces (Guizhou, Sichuan, and Yunnan) was surveyed. Then, the virulence of 29 isolated strains against Bemesia tabaci and Spodoptera litura was assessed. After analyzing 212 soil samples, 497 isolated fungi were identified. Out of them, 490 isolates were classified in 45 species of 24 genera, whereas the other seven isolates, belonging to Paecilomyces and Purpureocillium genera, were not identified under species level. Furthermore, the EF biodiversity from soil of Sichuan, Yunan, and Guizhou areas, analyzed by Shannon Wiener Index (SWI) was rated at 2.98, 1.89, and 2.14, while SWIs-biodiversity in crop, forest, grassy, orchard and arable areas was rated at 2.88, 2.74, 3.05, 2.39, and 2.47. SWI data suggested that soil from Sichuan area and grassy had higher EF biodiversity compared with other analyzed provinces and areas. Virulence bioassay results indicated that, out of the 29 isolates tested, 24 were pathogenic against B. tabaci and S. litura, resulting in mortality rates >10%. In conclusion, this study reports the EF distribution and biodiversity in soil from three provinces located at Southwest China, whereas their potential use as a tool for the B. tabaci and S. litura biocontrol must be further investigated.

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Increasing climate sensitivity of subtropical conifers along an aridity gradient

Cited by 22 publications

References 43 publications

Warming-induced drought leads to tree growth decline in subtropics: Evidence from tree rings in central China

Warming-induced drought leads to tree growth decline in subtropics: Evidence from tree rings in central China

Global Flash Drought Analysis: Uncertainties From Indicators and Datasets

Entomopathogenic Fungi Biodiversity in the Soil of Three Provinces Located in Southwest China and First Approach to Evaluate Their Biocontrol Potential

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