Subtropical forests provide diverse ecosystem services to human society. However, how subtropical tree species respond climate change is still unclear. Using a dendrochronological method, we studied the radial growth patterns and species-specific responses of four main in China recent warming drought. Results showed that long-term drought caused by global reduced precipitation since 1997 had resulted decline Pinus massoniana, Castanea henryi Castanopsis eyrei but not for Liquidambar...

Climate change affects vegetation growth around the world. It has been recognized that effect of climate on exhibits hysteresis. However, duration and intensity time-lag factors is still difficult to quantify. We analyzed impacts in 32 major cities China from 2010 2016. Vegetation conditions were characterized using enhanced index (EVI) datasets Moderate Resolution Imaging Spectrometer (MODIS). The data extracted Daily Value Data Set Surface (V3.0), including precipitation (PRE; mm), air...

Temperate forests in northeast Asia are crucial to maintaining biodiversity conservation and ecological security. Under the background of global warming drought, it is great significance study special indicator effect tree growth on climate change. Dendrochronological analysis different species same community under change can provide valuable information for adaptive potential species-specific indications. Here, we compared radial patterns 13 co-occurring a temperate forest China. Pearson...

ABSTRACT Northeast China is one of the most vulnerable areas to climate change in high latitude regions Northern Hemisphere. The past temperature variations are critical reveal driving mechanism and reduce uncertainty predicting future climates. Pre‐instrument climatic variability poorly understood, because scarcity centuries‐long data. Here, we present a 211‐year (1803–2013) growing season (May–July) reconstruction based on tree‐ring width chronology Korean pine ( Pinus koraiensis ) from...

Abstract. The rate of global warming has led to persistent drought. It is considered be the preliminary factor affecting socioeconomic development under background dynamic forecasting water supply and forest ecosystems in West Asia. However, long-term climate records semiarid Hindu Kush range are seriously lacking. Therefore, we developed a new tree-ring width chronology Cedrus deodara spanning period 1537–2017. We reconstructed March–August Palmer Drought Severity Index (PDSI) for past 424...

Abstract The earlywood vessels (EWVs) of ring‐porous species are formed in the outermost tree ring to guarantee efficient water transport before bud break. At present, it is unclear which climatic factors influence formation EWV traits trees temperate forests, limits accuracy predicting forest response climate change. We investigated Manchurian ash ( Fraxinus mandshurica Rupr.) a network 19 sites northeast China. Ring width (RW) was significantly negatively correlated with vessel density...

Rapid warming and increasing drought intensity are exposing forest ecosystems to stress, challenging silvicultural decision-making. Tree growth-climate relationships may provide valuable information on tree species' adaptive potentials. However, it is not clear how subtropical trees will respond climate change. Here, we present a dendrochronological study Pinus massoniana Castanopsis eyrei growing at two elevations (400 m 890 m) the northern Luoxiao Mountain in China reveal their...

Abstract. We present a reconstruction of July–August mean maximum temperature variability based on chronology tree-ring widths over the period AD 1646–2013 in northern part northwestern Sichuan Plateau (NWSP), China. A regression model explains 37.1 % variance during calibration from 1954 to 2012. Compared with nearby reconstructions and gridded land surface data, our had high spatial representativeness. Seven major cold periods were identified (1708–1711, 1765–1769, 1818–1821, 1824–1828,...

Permafrost melting due to climate warming in recent decades has produced significant effects on forest ecosystems, especially the boreal biome at its southernmost limit Asia. How this affects wood formation of trees intra-annual resolution is unclear, yet crucial for assessing impact permafrost growth. In study, we compared radial growth and density fluctuations (IADFs) Dahurian larch (Larix gmelinii Rupr.) a (PF) non-permafrost (NPF) site northeast China quantified their relationships with...

Abstract Vegetation growth is affected by past rates and climate variability. However, the impacts of vegetation carryover (VGC; biotic) lagged climatic effects (LCE; abiotic) on tree stem radial may be decoupled from photosynthetic capacity, as higher photosynthesis does not always translate into greater growth. To assess interaction tree‐species level VGC LCE with ecosystem‐scale processes, we utilized tree‐ring width (TRW) data for three species: Castanopsis eyrei (CE), Castanea henryi...

Abstract We used a dendrochronological approach to identify the spatial variability in growth‐climate relationships of Amur cork tree ( Phellodendron amurense ), using network 12 sites across its natural range Northeast China. Results showed that signal‐noise ratio, expressed population signal, and mean interseries correlations site chronologies decreased significantly with decreasing latitude. Correlation matrix, cluster, rotated empirical orthogonal function (EOF) analysis all indicated...

In recent decades, the global climate has changed significantly. The in Northwest China became warm-wet, especially Tianshan Mountains. order to explore response of tree growth change, two dominant trees species, Picea schrenkiana Fisch. et Mey. and Larix sibirica Ledeb., were studied with dendrochronological method western Mountains (WT) eastern (ET). Our results showed that: (1) four sample sites WT significantly increased while three ET decreased. (2) WT, except for Manas site, tree-ring...

Abstract Climate changes have dramatically affected forest succession. However, how trees at different successional stages respond to climate warming is unclear in the subtropics. Here, we compared radial growth (RW) and xylem features of early-successional stage Castanea mollissima late-successional Quercus fabri subtropical forests assessed their response changes. All parameters, including RW, number vessels (VN), vessel density (VD), mean (MVA) total (TVA) area, percentage conductive area...

Abstract Trees progress through various growth stages, each marked by specific responses and adaptation strategies to environmental conditions. Despite the importance of age-related on overall forest health management policies, limited knowledge exists regarding effects dendroclimatic relationships in key subtropical tree species. In this study, we employed a dendrochronological method examine impact rapid warming dynamics climatic sensitivity young (40–60 years) old (100–180 Pinus...

Abstract. We present a 260-year annual Palmer drought severity index (PDSI) reconstruction based on tree-ring width chronology of Scots pine (Pinus sylvestris var. mongolica) from four sample sites in the central Daxing'an Mountains, northeast China. The equation explained 38.2 % variance PDSI calibration period 1911 to 2010. Our confirmed local historical documents and other nearby hydroclimate reconstructions. Drought 1920s–1930s was more severe Mountains than surrounding areas. A slight...

As an important barrier against desert invasion in Northwest China, Helan Mountains (HL), Luoshan (LS) and their natural forests have extremely ecological status. It is of great significance to study the relationship between forest growth climate this region under background global change. At present, relevant research mostly focuses on Chinese pine (Pinus tabulaeformis Carr.), little known about how Qinghai spruce (Picea crassifolia Kom.) responds To investigate potential relationships...