干旱区生态环境知识资源中心(Arid): Effects of Nitrogen Addition and Reproductive Effort on Nutrient Resorption of a Sand-Fixing Shrub

Arid

DOI	10.3389/fpls.2020.588865
	Effects of Nitrogen Addition and Reproductive Effort on Nutrient Resorption of a Sand-Fixing Shrub
	Wang, Lilong; Li, Yulin; Duan, Yulong; Lian, Jie; Luo, Yongqing; Wang, Xuyang; Luo, Yayong
通讯作者	Li, YL (corresponding author), Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Naiman Desertificat Res Stn, Lanzhou, Peoples R China.
来源期刊	FRONTIERS IN PLANT SCIENCE
ISSN	1664-462X
出版年	2020
卷号	11
英文摘要	Caragana microphylla is a sand-fixing leguminous shrub with strong resistance to drought, cold, and low soil fertility. As a result, it plays an essential role in combating desertification in northern China, but little is known about its nutrient budget. Nutrient resorption is a key process in plant nutrient conservation and has marked ecological implications for plant fitness and ecosystem nutrient cycling. We studied the effects of both nitrogen (N) addition and reproductive effort on leaf N resorption of C. microphylla in a temperate semi-arid sandy land in China. The results showed that sprouting of the early leaves from over-wintered buds employs a strategy for slow returns on nutrient investment with smaller specific leaf area (SLA) and higher N resorption efficiency, whereas the late leaves, which sprout from current-year buds, employ a strategy for quick returns on nutrient investment with higher SLA and lower N resorption efficiency. N addition significantly increased the N resorption efficiency from early leaves while exerting no impact on late leaves, suggesting that the increased N recovery from early leaves is done to sustain the high N demands of late leaves. Reproductive effort did not affect the N resorption from early or late leaves due to the temporal separation between fruit production and leaf senescence. Taken together, our results demonstrate that C. microphylla has evolved different investment strategies for leaf N in early and late leaves to conserve nutrients and facilitate its growth in desertified environments.
英文关键词	nutrient resorption nitrogen addition reproductive effort desertification foliar nutrient concentration
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:000603017200001
WOS关键词	CARAGANA-MICROPHYLLA ; PHOSPHORUS RESORPTION ; MINERAL-NUTRITION ; LEAF SENESCENCE ; WATER-USE ; LAND ; PATTERNS ; LEAVES ; CARBON ; PHOTOSYNTHESIS
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/2XILL650/348869
作者单位	[Wang, Lilong; Li, Yulin; Duan, Yulong; Lian, Jie; Luo, Yongqing; Wang, Xuyang; Luo, Yayong] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Naiman Desertificat Res Stn, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Wang, Lilong,Li, Yulin,Duan, Yulong,et al. Effects of Nitrogen Addition and Reproductive Effort on Nutrient Resorption of a Sand-Fixing Shrub[J],2020,11.
APA	Wang, Lilong.,Li, Yulin.,Duan, Yulong.,Lian, Jie.,Luo, Yongqing.,...&Luo, Yayong.(2020).Effects of Nitrogen Addition and Reproductive Effort on Nutrient Resorption of a Sand-Fixing Shrub.FRONTIERS IN PLANT SCIENCE,11.
MLA	Wang, Lilong,et al."Effects of Nitrogen Addition and Reproductive Effort on Nutrient Resorption of a Sand-Fixing Shrub".FRONTIERS IN PLANT SCIENCE 11(2020).