Different trends and divergent responses to climate factors in the radial growth of Abies georgei along elevations in the central Hengduan Mountains

Yuan, Shuai; Jiang, Yuan; Zhao, Zefang; Cui, Minghao; Shi, Dongyan; Wang, Shengjie; Kang, Muyi

doi:10.1016/j.dendro.2023.126114

Cited by 4 publications

(4 citation statements)

References 46 publications

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“…In addition, the location of the sampling environment on the southeastern leeward slopes, coupled with the rapid warming process during the winter season, exacerbated the effects of winter (early spring) drought on the growth of trees at low altitudes [42,43]. However, this drought effect gradually weakened with altitude (Figure 7f,h) because water evapotranspiration decreases rapidly with the increase in altitude, and trees are less susceptible to water stress at high altitudes than at low altitudes [9]. This variability was also confirmed by the negative correlation between Dahurian larch growth at high altitudes and relative humidity from November to March.…”

Section: Temporal-spatial Differences In Growth-climate Associationsmentioning

confidence: 99%

“…This rapid warming phenomenon is already having major impacts on forest ecosystems, including changes in tree growth and development and in forest composition and function, especially in some alpine and high-altitude areas [5][6][7][8]. Altitude is an important factor that indirectly affects tree growth in mountain habitats, and several studies have reported that rapid warming may negatively affect trees at lower altitudes but favor tree growth at higher altitudes [9,10]. Reduced water availability due to rapid warming in arid and semiarid zones inhibits tree growth and leads to tree mortality and forest decline [11,12].…”

Section: Introductionmentioning

confidence: 99%

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Rapid Warming Exacerbates Winter Drought Stress in Trees at High-Altitude Areas in Northeast China

Zhang,

Bai,

Tian

et al. 2024

Forests

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Against the background of global warming, trees in high-latitude and high-altitude areas are more sensitive to rapid warming. Revealing the response patterns of trees at different altitudes to rapid warming in typical alpine mountain environments can help to predict the future distribution of forests in the region and the associated changes in the timberline. This study used tree-ring width data (band sampling) from Dahurian larch (Larix gmelinii Rupr.) along an altitudinal gradient (970–1409 m) on Oakley Mountain to establish 10 chronologies and to analyze the growth–climate response of larch to warming and altitudinal changes along a gradient. The results showed that before rapid warming, larch growth was strongly influenced mainly by precipitation in July–August, while after warming, the growth was controlled mainly by precipitation (snowfall) in winter (October–April) and showed a significant positive correlation with the SPEI in winter and a negative correlation with temperature in February–April (early spring). This indicates that the rapid warming event led to a drastic change in the water heat balance during the pre-growth period of the trees in the study area, which shifted the tree growth from being restricted by drought in the growing season before warming to being restricted by winter drought (i.e., the lagged effect of snowfall in the pre-growing season) after warming and that the trees at low altitudes suffered from more severe winter drought. In the future, as the global climate warms further, the growth of mountain larch at low altitudes (below 1200 m) will continue to decrease, and the coupling of winter snowfall and seasonal (February–April) warming will increase the upper altitude limit at which winter drought occurs for larch in the study area; additionally, larch at higher altitudes will be able to cope with this ecological process better.

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Section: Temporal-spatial Differences In Growth-climate Associationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Rapid Warming Exacerbates Winter Drought Stress in Trees at High-Altitude Areas in Northeast China

Zhang,

Bai,

Tian

et al. 2024

Forests

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“…Many studies have investigated the responses of the radial growth of trees to climate in southwestern China. Increased mean or lowest air temperature in previous winters or pre-monsoon before growth season can promote radial growth [8][9][10][11][12][13][14][15][16][17][18]. Reduced rainfall in growing season is another beneficial factor [17,[19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

“…Increased mean or lowest air temperature in previous winters or pre-monsoon before growth season can promote radial growth [8][9][10][11][12][13][14][15][16][17][18]. Reduced rainfall in growing season is another beneficial factor [17,[19][20][21][22][23][24][25]. The higher the elevation at which a tree is located, the more significant the response pattern [26].…”

Section: Introductionmentioning

confidence: 99%

Tree Radial Growth Responses to Climate and Reservoir Impoundment in Valleys in Southwestern China

Sun,

Ding,

Zhou

et al. 2024

Forests

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Southwestern China is a critical biodiversity hotspot area, and many large hydroelectric projects have been established in the valleys in the region. Tree growth in the valleys will be affected by both regional climate and reservoir impoundment. However, it remains unknown whether the radial growth of trees in the valleys has a common response pattern to the regional climate, and it is also unclear whether the response of radial growth to reservoir impoundment can be detected. In this study, we developed tree-ring width chronologies of Pinus yunnanensis Franch. collected at 11 sites with vertical and horizontal gradients to three hydroelectric reservoirs in three riverine valleys in southwestern China. We analyzed the radial growth responses to the regional climate from 1986 to 2017 by correlation with instrumental meteorological data. Tree growth responses to reservoir impoundment were investigated through spatial and temporal comparisons using the change in the Euclidean distance and difference test. We also distinguished their responses at tree-ring sites without influenced by reservoir impoundment including two sites in the valleys and seven sites at high elevations. The results showed that the climate conditions in May and the dry season before the growth season significantly limit the radial growth in the valleys, which is different to that at high-elevation areas in southwestern China. Growth variations in the valleys are related to elevations and the trees in similar slopes positions exhibit similar responses. For trees in the low slope positions, both variance and mean values of radial growth are affected by reservoir impoundment. Trees at relatively low sites (i.e., sites M2, R2, L2), rather than the trees close to the reservoirs (i.e., sites M1, R1, L1), respond more sensitively to reservoir impoundment.

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Landslide development and susceptibility along the Yunling–Yanjing segment of the Lancang River using grid and slope units

Wen,

Zhao,

Liang

et al. 2024

Nat Hazards

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Different trends and divergent responses to climate factors in the radial growth of Abies georgei along elevations in the central Hengduan Mountains

Cited by 4 publications

References 46 publications

Rapid Warming Exacerbates Winter Drought Stress in Trees at High-Altitude Areas in Northeast China

Rapid Warming Exacerbates Winter Drought Stress in Trees at High-Altitude Areas in Northeast China

Tree Radial Growth Responses to Climate and Reservoir Impoundment in Valleys in Southwestern China

Landslide development and susceptibility along the Yunling–Yanjing segment of the Lancang River using grid and slope units

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