干旱区生态环境知识资源中心(Arid): Long-Term Effects of Climate and Competition on Radial Growth, Recovery, and Resistance in Mongolian Pines

Arid

DOI	10.3389/fpls.2021.729935
	Long-Term Effects of Climate and Competition on Radial Growth, Recovery, and Resistance in Mongolian Pines
	Sun, ShouJia; Zhang, JinSong; Zhou, Jia; Guan, ChongFan; Lei, Shuai; Meng, Ping; Yin, ChangJun
通讯作者	Meng, P ; Yin, CJ (corresponding author), Chinese Acad Forestry, Res Inst Forestry, Key Lab Tree Breeding & Cultivat, Natl Forestry & Grassland Adm, Beijing, Peoples R China. ; Meng, P ; Yin, CJ (corresponding author), Nanjing Forestry Univ, Collaborat Innovat Ctr Sustainable Forestry South, Nanjing, Peoples R China.
来源期刊	FRONTIERS IN PLANT SCIENCE
ISSN	1664-462X
出版年	2021
卷号	12
英文摘要	Understanding the response of tree growth and drought vulnerability to climate and competition is critical for managing plantation forests. We analyzed the growth of Mongolian pines in six forests planted by the Three-North Shelter Forest Program with tree-ring data and stand structures. A retroactive reconstruction method was used to depict the growth-competition relationships of Mongolian pines during the growth period and their climatic responses under different competition levels. Drought vulnerability was analyzed by measuring the basal area increment (BAI) of different competition indices (CIs). In young trees, differences in BAIs in stands with different CIs were not statistically significant. After 15-20 years, medium- and high-CI stands had significantly lower tree-ring widths (TWs) and BAIs than the low-CI stands (p < 0.05). The standardized precipitation evapotranspiration index (SPEI), precipitation, relative humidity, and vapor pressure deficit were major factors affecting tree growth. On a regional scale, climate outweighed competition in determining radial growth. The relative contribution of climatic factors increased with the gap in SPEI between plantation sites and the native range, while the reverse pattern of the competition-growth relationship was observed. Drought reduced TWs and BAIs at all sites. Stands of different CIs exhibited similar resistance, but, compared with low-CI stands, high- and medium-CI stands had significantly lower recovery, resilience, and relative resilience, indicating they were more susceptible to drought stresses. Modeled CI was significantly negatively related to resistance, resilience, and relative resilience, indicating a density-dependence of tree response to drought. After exposure to multiple sequential drought events, the relative resilience of high-CI stands decreased to almost zero; this failure to fully recover to pre-drought growth rates suggests increased mortality in the future. In contrast, low-CI stands are more likely to survive in hotter, more arid climates. These results provide a better understanding of the roles of competition and climate on the growth of Mongolian pines and offer a new perspective for investigating the density-dependent recovery and resilience of these forests.
英文关键词	Mongolian pine climate change competition index radial growth vulnerability to drought
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000704893700001
WOS关键词	SCOTS PINE ; TREE SIZE ; FOREST DYNAMICS ; DROUGHT ; RESILIENCE ; MORTALITY ; OAK ; PLANTATIONS ; RESPONSES ; IMPACTS
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363353
作者单位	[Sun, ShouJia; Zhang, JinSong; Zhou, Jia; Guan, ChongFan; Lei, Shuai; Meng, Ping; Yin, ChangJun] Chinese Acad Forestry, Res Inst Forestry, Key Lab Tree Breeding & Cultivat, Natl Forestry & Grassland Adm, Beijing, Peoples R China; [Sun, ShouJia; Zhang, JinSong; Zhou, Jia; Guan, ChongFan; Lei, Shuai; Meng, Ping; Yin, ChangJun] Nanjing Forestry Univ, Collaborat Innovat Ctr Sustainable Forestry South, Nanjing, Peoples R China
推荐引用方式 GB/T 7714	Sun, ShouJia,Zhang, JinSong,Zhou, Jia,et al. Long-Term Effects of Climate and Competition on Radial Growth, Recovery, and Resistance in Mongolian Pines[J],2021,12.
APA	Sun, ShouJia.,Zhang, JinSong.,Zhou, Jia.,Guan, ChongFan.,Lei, Shuai.,...&Yin, ChangJun.(2021).Long-Term Effects of Climate and Competition on Radial Growth, Recovery, and Resistance in Mongolian Pines.FRONTIERS IN PLANT SCIENCE,12.
MLA	Sun, ShouJia,et al."Long-Term Effects of Climate and Competition on Radial Growth, Recovery, and Resistance in Mongolian Pines".FRONTIERS IN PLANT SCIENCE 12(2021).