Divergent Seasonal Patterns of Qinghai Spruce Growth with Elevation in Northwestern China
文献类型：期刊论文
| 作者 | Wan, Yanfang; Yu, Pengtao; Li, Xiaoqing; Wang, Yanhui; Wang, Bin; Yu, Yipeng; Zhang, Lei ; Liu, Xiande; Wang, Shunli
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| 刊名 | FORESTS
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| 出版日期 | 2022-03 |
| 卷号 | 13期号:3页码:388 |
| 关键词 | STEM RADIAL GROWTH TREE-GROWTH BALSAM FIR ENVIRONMENTAL-FACTORS QILIAN MOUNTAINS CLIMATE-CHANGE INCREMENT PINE VARIABILITY PRECIPITATION |
| 英文摘要 | Dryland montane forests are important agents for soil and water resource conservation. The growth of these forests under climate warming is strongly affected by local environmental factors. However, how environmental factors impact intra-annual stem growth dynamics across environmental gradients in these regions remains unclear. This work focused on assessing seasonal patterns of stem growth across different elevations and how environmental factors impact stem growth in the Qilian Mountains, northwestern China. The stem growth of 50 Qinghai spruce trees was monitored for two years across an elevation gradient from 2500 m to 3300 m above sea level (a.s.l.). We found that growth initiation occurred later as the elevation increased, and growth commenced when elevation-specific temperature thresholds were reached. However, growth cessation presented large elevational differences: cessation occurred much earlier at low elevations (2500 m and 2700 m a.s.l.). Exceptionally early growth cessation occurred predominantly at 2700 m a.s.l., which was correlated with seasonal drought/insufficient rainfall and low soil moisture occurring since mid-July 2015. Temperature and soil moisture were the key factors governing the daily rate of stem growth in the beginning, rapid growth, and end stages. Overall, due to effects of seasonal drought and low temperature on growth cessation and growth rate, the annual growth of Qinghai spruce was rather low at both low (2500-2700 m a.s.l.) and high (3100-3300 m a.s.l.) elevations; middle elevations (approximately 2900 m a.s.l.) might be the most favorable Qinghai spruce growth. Our results implied that tree growth will likely decline at low elevations and that the optimal elevation for Qinghai spruce growth in northwestern China is expected to shift upward under future climate warming. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47227]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 通讯作者 | Yu, Pengtao |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China 2.Chinese Acad Forestry, Ecol & Nat Conservat Inst, Natl Forestry & Grassland Adm, Key Lab Forest Ecol & Environm, Beijing 100091, Peoples R China 3.Qinghai Nationalities Univ, Sch Polit & Publ Managements, Xining 810000, Peoples R China 4.Ludong Univ, Coll Resources & Environm Engn, Yantai 264025, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wan, Yanfang,Yu, Pengtao,Li, Xiaoqing,et al. Divergent Seasonal Patterns of Qinghai Spruce Growth with Elevation in Northwestern China[J]. FORESTS,2022,13(3):388. |
| APA | Wan, Yanfang.,Yu, Pengtao.,Li, Xiaoqing.,Wang, Yanhui.,Wang, Bin.,...&Wang, Shunli.(2022).Divergent Seasonal Patterns of Qinghai Spruce Growth with Elevation in Northwestern China.FORESTS,13(3),388. |
| MLA | Wan, Yanfang,et al."Divergent Seasonal Patterns of Qinghai Spruce Growth with Elevation in Northwestern China".FORESTS 13.3(2022):388. |
入库方式： OAI收割
来源：生态环境研究中心
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