干旱区生态环境知识资源中心(Arid): 黑河下游绿洲过渡带戈壁荒漠群落优势种叶片性状和生态化学计量特征

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	黑河下游绿洲过渡带戈壁荒漠群落优势种叶片性状和生态化学计量特征
其他题名	Leaf traits and ecological stoichiometry of dominant desert species across oasis-Gobi desert ecotone in the lower reaches of Heihe River, China
	张晓龙 1; 周继华 2; 来利明 2; 姜联合 2; 郑元润 2; 史利江 3
来源期刊	应用与环境生物学报
ISSN	1006-687X
出版年	2019
卷号	25 期号:6 页码:1270-1276
中文摘要	植物性状是植物与环境共同作用的结果,研究不同生境条件下植物叶片性状和生态化学计量特征,有助于揭示植物对环境变化的响应及生态适应策略.以黑河下游河岸绿洲、绿洲戈壁过渡带和戈壁荒漠群落优势种为研究对象,分析荒漠优势种在生长旺季叶片干物质含量、比叶面积以及碳(C)、氮(N)和磷(P)的生态化学计量特征.结果显示:不同生境条件下叶片干物质含量和比叶面积均值分别为0.30 0.01和31.19 1.75 cm~2/g;叶片C、N、P、C:N、C:P和N:P均值分别为316.51 20.04 mg/g、16.63 1.00 mg/g、1.10 0.18 mg/g、19.77 1.31、434.64 45.88和22.07 2.06;与区域、全国以及全球尺度相比,黑河下游荒漠优势种总体表现出较低的叶片C含量和比叶面积,较高的C:P和N:P.在不同生境条件下,叶片性状和化学计量特征存在显著差异性,河岸绿洲和绿洲戈壁过渡带荒漠优势种叶片N:P大于16,表明河岸绿洲和过渡带荒漠优势种可能倾向于受P元素控制,具有保守性特点;而戈壁荒漠优势种叶片N:P小于14,表明戈壁荒漠优势种可能倾向于受N元素控制,具有较强的适应能力.上述研究表明,在生长旺季,N和P元素是黑河下游荒漠植物生长的限制性营养元素,与戈壁荒漠地区相比,河岸绿洲和过渡带可能受到P限制作用更为强烈,结果可为荒漠绿洲和戈壁荒漠植被恢复和管理提供科学依据.
英文摘要	Plant traits are influenced by the interaction between plants and environment, and the study of leaf traits and ecological stoichiometry of plants in different habitats can reveal how plants respond and adapt to environmental changes. In the lower reaches of Heihe River, dominant desert community species distributed in riparian oasis, Gobi desert-oasis ecotone, and Gobi desert, were selected, and leaf dry matter content, specific leaf area, and stoichiometry of leaf C, N, and P of these species in different habitats were investigated during the growing season. The results showed that the average leaf dry matter content and specific leaf area of desert dominant species were 0.30 0.01 and 31.19 1.75 cm~2/g, respectively. The average leaf C, leaf N, leaf P, leaf C/N, leaf N/P, and leaf C/P were 316.25 20.04 mg/g, 16.63 1.00 mg/g, 1.10 0.18 mg/g, 19.77 1.31, 434.64 45.88, and 22.07 2.06, respectively. Compared to the regional, national, and global scales, the dominant desert species in the lower reaches of Heihe River were characterized by lower leaf C and SLA but higher C:P and N:P. There were significant differences in leaf traits and leaf stoichiometric traits among different habitats. Leaf N:P of dominant desert species in riparian oasis and Gobi desert-oasis ecotone was greater than 16, indicating that these plants might be more limited by P than by N and that they are more conservative, but the leaf N:P of these plants in the Gobi desert was less than 14, indicating that these plants might be more limited by N than by P and have a high level of adaptability. Our observations indicated that N and P were the limiting nutrients for desert plants in the growing season, and compared with the Gobi desert area in the lower reaches of Heihe River, the dominant desert species of riparian oasis and Gobi desert-oasis ecotone may be more strongly affected by P limitation. These results provide a scientific basis for vegetation restoration and sustainable management in desert oasis and Gobi Desert area.
中文关键词	生境 ; 叶片性状 ; 生态化学计量特征 ; 适应策略 ; 黑河下游
英文关键词	habitat leaf trait ecological stoichiometry adaptation strategy lower reaches of Heihe River
语种	中文
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6649988
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315853
作者单位	1.山西财经大学资源环境学院,地表过程与生态环境研究所;;中国科学院植物研究所, ;;, 太原;;, ;;北京 030006;;100093; 2.中国科学院植物研究所, 北京 100093, 中国; 3.山西财经大学资源环境学院,地表过程与生态环境研究所, 太原, 山西 030006, 中国
推荐引用方式 GB/T 7714	张晓龙,周继华,来利明,等. 黑河下游绿洲过渡带戈壁荒漠群落优势种叶片性状和生态化学计量特征[J],2019,25(6):1270-1276.
APA	张晓龙,周继华,来利明,姜联合,郑元润,&史利江.(2019).黑河下游绿洲过渡带戈壁荒漠群落优势种叶片性状和生态化学计量特征.应用与环境生物学报,25(6),1270-1276.
MLA	张晓龙,et al."黑河下游绿洲过渡带戈壁荒漠群落优势种叶片性状和生态化学计量特征".应用与环境生物学报 25.6(2019):1270-1276.