干旱区生态环境知识资源中心(Arid): Response of C:N:P in the plant-soil system and stoichiometric homeostasis of Nitraria tangutorum leaves in the oasis-desert ecotone, Northwest China

Arid

	Response of C:N:P in the plant-soil system and stoichiometric homeostasis of Nitraria tangutorum leaves in the oasis-desert ecotone, Northwest China
	Wei Yajuan; Dang Xiaohong; Wang Ji; Gao Junliang; Gao Yan
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2021
卷号	13 期号:9 页码:934-946
英文摘要	Nitraria tangutorum nebkhas are widely distributed in the arid and semi-arid desert areas of China. The formation and development of N. tangutorum nebkhas are the result of the interaction between vegetation and the surrounding environment in the process of community succession. Different successional stages of N. tangutorum nebkhas result in differences in the community structure and composition, thereby strongly affecting the distribution of soil nutrients and ecosystem stability. However, the ecological stoichiometry of N. tangutorum nebkhas in different successional stages remains poorly understood. Understanding the stoichiometric homeostasis of N. tangutorum could provide insights into its adaptability to the arid and semi-arid desert environments. Therefore, we analyzed the stoichiometric characteristics of N. tangutorum in four successional stages, i.e., rudimental, developing, stabilizing, and degrading stages using a homeostasis model in an oasis-desert ecotone of Northwest China. The results showed that soil organic carbon (SOC), total nitrogen (TN), and total phosphorus (TP) contents and their ratios in the 0-100 cm soil depth were significantly lower than the averages at regional and global scales and were weakly influenced by successional stages in the oasis-desert ecotone. TN and TP contents and C:N:P in the soil showed similar trends. Total carbon (TC) and TN contents in leaves were 450.69-481.07 and 19.72-29.35 g/kg, respectively, indicating that leaves of N. tangutorum shrubs had a high storage capacity for C and N. Leaf TC and TN contents and N:P ratio increased from the rudimental stage to the stabilizing stage and then decreased in the degrading stage, while the reverse trend was found for leaf C:N. Leaf TP content decreased from the rudimental stage to the degrading stage and changed significantly in late successional stages. N:P ratio was above the theoretical limit of 14, indicating that the growth of N. tangutorum shrubs was limited by P during successional stages. Leaf N, P, and N:P homeostasis in four successional stages was identified as ''strictly homeostasis''. Redundancy analysis (RDA) revealed that soil acidity (pH) and the maximum water holding capacity were the main factors affecting C:N:P stoichiometric characteristics in N. tangutorum leaves. Our study demonstrated that N. tangutorum with a high degree of stoichiometric homeostasis could better cope with the arid desert environment.
英文关键词	nebkhas ecological stoichiometry ecological adaptability successional stages arid area
类型	Article
语种	英语
收录类别	CSCD
WOS类目	Plant Sciences
CSCD记录号	CSCD:7093017
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377429
作者单位	Wei Yajuan, Institute of Desert Control Science and Engineering, Inner Mongolia Agricultural University;;Key Laboratory of State Forest Administration for Desert Ecosystem Protection and Restoration, ;;Key Laboratory of State Forest Administration for Desert Ecosystem Protection and Restoration, Hohhot;;Hohhot, ;; 010018;;010018.; Gao Yan, Institute of Desert Control Science and Engineering, Inner Mongolia Agricultural University;;Key Laboratory of State Forest Administration for Desert Ecosystem Protection and Restoration, ;;Key Laboratory of State Forest Administration for Desert Ecosystem Protection and Restoration, Hohhot;;Hohhot, ;; 010018;;010018.; Dang Xiaohong, Institute of Desert Control Science and Engineering, Inner Mongolia Agricultural University;;Key Laboratory of State Forest Administration for Desert Ecosystem Protection and Restoration;;Inner Mongolia Hangjin Desert Ecological Research Station, ;;Key Laboratory of State Forest Administration for Desert Ecosystem Protection and Restoration...
推荐引用方式 GB/T 7714	Wei Yajuan,Dang Xiaohong,Wang Ji,et al. Response of C:N:P in the plant-soil system and stoichiometric homeostasis of Nitraria tangutorum leaves in the oasis-desert ecotone, Northwest China[J],2021,13(9):934-946.
APA	Wei Yajuan,Dang Xiaohong,Wang Ji,Gao Junliang,&Gao Yan.(2021).Response of C:N:P in the plant-soil system and stoichiometric homeostasis of Nitraria tangutorum leaves in the oasis-desert ecotone, Northwest China.Journal of Arid Land,13(9),934-946.
MLA	Wei Yajuan,et al."Response of C:N:P in the plant-soil system and stoichiometric homeostasis of Nitraria tangutorum leaves in the oasis-desert ecotone, Northwest China".Journal of Arid Land 13.9(2021):934-946.