Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | DOI10.1088/1748-9326/abd214 |
High risk of growth cessation of planted larch under extreme drought | |
Xianliang Zhang; Xue Li; Rubén D Manzanedo; Loïc D’Orangeville; Pengcheng Lv; Chunkai Wang; Chen Xu; Meiting Hou; Xuanrui Huang; Tim Rademacher | |
2021-01-08 | |
发表期刊 | Environmental Research Letters |
出版年 | 2021/01/08 |
英文摘要 | Larch trees are widely used in afforestation and timber plantations. Yet, little is known on how planted larch trees cope with increasing drought. We used a tree-ring network of 818 trees from 31 plantations spanning most of the distribution of Larix principis-rupprechtii to investigate how extreme drought influences larch radial growth in northern China. We found that summer drought, rather than temperature or precipitation, had the strongest relationship with radial growth throughout the region. Drought increased in frequency in recent decades, leaving a strong imprint on the radial growth of larch, particularly in dry sites. Across its distribution, radial growth in larch trees that experienced extreme droughts more frequently displayed lower resistance to drought, but higher recovery after it, suggesting these populations were better adapted to extreme droughts. Radial growth decreased with increasing drought, with particularly severe declines below a threshold Palmer Drought Severity Index (PDSI) value of −3 to −3.5. Extreme droughts (PDSI < −4.5) caused a reduction of 62% of radial growth and chronic drought events caused around 20% reduction in total radial growth compared with mean growth on the driest sites. Given that current climate projections for northern China indicate a strong increase in the frequency and severity of extreme drought, trees in large portions of the largest afforestation project in the world, particularly those in the drier edge, are likely to experience severe growth reductions in the future. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/310379 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Xianliang Zhang,Xue Li,Rubén D Manzanedo,et al. High risk of growth cessation of planted larch under extreme drought[J]. Environmental Research Letters,2021. |
APA | Xianliang Zhang.,Xue Li.,Rubén D Manzanedo.,Loïc D’Orangeville.,Pengcheng Lv.,...&Tim Rademacher.(2021).High risk of growth cessation of planted larch under extreme drought.Environmental Research Letters. |
MLA | Xianliang Zhang,et al."High risk of growth cessation of planted larch under extreme drought".Environmental Research Letters (2021). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论