干旱区生态环境知识资源中心(Arid): 暖干化加剧东北半干旱地区油松人工林径向生长的水分限制

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	暖干化加剧东北半干旱地区油松人工林径向生长的水分限制
其他题名	Warming-drying climate intensifies the restriction of moisture on radial growth of Pinus tabuli -formis plantation in semi-arid area of Northeast China
	赵莹; 蔡立新; 靳雨婷; 李俊霞; 崔迪; 陈振举
来源期刊	应用生态学报
ISSN	1001-9332
出版年	2021
卷号	32 期号:10 页码:3459-3467
中文摘要	相较天然林,人工林生态系统对全球性气候变化更敏感。本文利用树木年代学方法,以东北半干旱地区油松人工林为对象建立油松年轮宽度年表,研究油松生长的动态变化及其径向生长与气象因子的相关关系,探讨升温对油松生长及分布的影响。结果表明:研究区油松年轮宽度主要与生长季5-7月的平均温度呈显著负相关,与生长季早期4月和生长季5-7月的平均降水量和PDSI呈显著正相关,水分可利用性是限制研究区油松径向生长的主要因子。自西南向东北随着年降水量增加,各样点油松径向生长对年均温的敏感性增强,与年降水量的相关关系由显著正相关转变为负相关,说明偏干旱的西南部地区油松生长受水分限制更严重。气候变暖导致的干旱胁迫使得研究区西南部的部分人工林油松生长呈衰退状态。随着暖干化的持续,研究区油松分布边界将发生局地收缩,适宜生长的边界将向北移动。
英文摘要	Plantation ecosystems are more vulnerable than natural ones to global climate change.Using the dendrochronology method,we established tree-ring width chronologies of Pinus tabuliformis distributed in the semi-arid region of Northeast China.We examined its growth dynamics,analyzed the relationship between radical growth and climate factors,and explored the effects of global warming on the growth and distribution of P.tabuliformis.The results showed that tree-ring width chronologies of P.tabuliformis were negatively correlated with mean temperature of growing season(May-July),and positively correlated with precipitation and Palmer drought severity index(PDSI)in the early growing season(April)and in the growing season(May-July).Water availability was the main limiting factor for the radial growth of P.tabuliformis.Along the increasing precipitation gradient from southwest to northeast,tree growth became more sensitive to annual mean temperature, and the correlation with annual precipitation shifted from positive to negative,indicating that tree growth in the relative arid area(southwest of the study area)was more severely restricted by water availability.Drought stress caused by climate warming resulted in growth declines at some sites in the southwest area.With the continuous warming-drying climate,the distribution boundary of P.tabuliformis in the study area would shrink locally,with the suitable growth boundary moving northward.
中文关键词	油松 ; 暖干化 ; 径向生长 ; 半干旱地区
英文关键词	Pinus tabuliformis warming-drying radial growth semi-arid region
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Forestry
CSCD记录号	CSCD:7083485
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/378026
作者单位	赵莹, 沈阳农业大学林学院, 树木年轮实验室, 沈阳, 辽宁 110866, 中国.; 蔡立新, 沈阳农业大学林学院, 树木年轮实验室, 沈阳, 辽宁 110866, 中国.; 靳雨婷, 沈阳农业大学林学院, 树木年轮实验室, 沈阳, 辽宁 110866, 中国.; 李俊霞, 沈阳农业大学林学院, 树木年轮实验室, 沈阳, 辽宁 110866, 中国.; 崔迪, 沈阳农业大学林学院, 树木年轮实验室, 沈阳, 辽宁 110866, 中国.; 陈振举, 沈阳农业大学林学院, 树木年轮实验室;;中国科学院清原森林生态系统观测研究站;;中国科学院沙漠与沙漠化重点实验室, ;;中国科学院清原森林生态系统观测研究站;;中国科学院沙漠与沙漠化重点实验室, 沈阳;;沈阳;;兰州, ;;;; 110866;;110164;;730000.
推荐引用方式 GB/T 7714	赵莹,蔡立新,靳雨婷,等. 暖干化加剧东北半干旱地区油松人工林径向生长的水分限制[J],2021,32(10):3459-3467.
APA	赵莹,蔡立新,靳雨婷,李俊霞,崔迪,&陈振举.(2021).暖干化加剧东北半干旱地区油松人工林径向生长的水分限制.应用生态学报,32(10),3459-3467.
MLA	赵莹,et al."暖干化加剧东北半干旱地区油松人工林径向生长的水分限制".应用生态学报 32.10(2021):3459-3467.