干旱区生态环境知识资源中心(Arid): 降水变化对混生红砂-珍珠生物量及分配的影响

Arid

	降水变化对混生红砂-珍珠生物量及分配的影响
其他题名	Effect of Precipitation on Biomass and Biomass Allocation of Mixed Reaumuria soongorica and Salsola passerina
	张鹏; 李毅; 单立山; 解婷婷
来源期刊	草地学报
ISSN	1007-0435
出版年	2021
卷号	29 期号:3 页码:1007-0435
中文摘要	为研究两种植物生物量及分配对生长方式和降水变化的响应,本研究以混生群落优势种单生-混生红砂(Reaumuria soongorica)和珍珠(Salsola passerina)幼苗为研究对象,采用收获法测定不同降水量条件下单生与混生红砂和珍珠各器官生物量。结果表明:生长方式对两种荒漠植物生物量有显著影响(P<0.05),与单生相比,混生红砂与珍珠总生物量及各器官生物均减少;红砂总生物量变化是由根系生物量决定,而珍珠总生物量变化则是由根、茎、叶生物量共同作用。生长方式对红砂根冠比和珍珠源汇比也有显著影响(P<0.05),与单生相比,混生珍珠源汇比平均增长量为24.74%,混生红砂叶根比平均增加了33.19%,而根冠比则有所下降。物种不同生物量在不同器官的分配有所差异,红砂生物量主要分配在根上,而珍珠生物量主要分配在叶上。红砂根生物量和珍珠叶生物量比受降水量显著影响(P<0.05)。
英文摘要	To investigated the responses of biomass and distribution of two plants to growth pattern and precipitation change.We measuered biomass of organs of single and mixed R.soongaricaand S.passerina seedlings,the dominant species of the mixed community,under different precipitation conditions.The results showed that growth pattern had a significant effect on the biomass of the two desert plants(P< 0.05).Compared with the single plants,the total biomass and each organ biomass of mixed R.soongarica and S.passerina were decreased.The total biomass of R.soongarica was determined by the biomass of root,while that of S.passerina was determined by root,stem and leaf biomass.The growth pattern had a significant effect on root-shoot ratio of R.soongarica and source-sink weight ratio of S.passerina (P< 0.05).Compared with single plants,the source-sink weight ratio of mixed S.passerina was increased by 24.74% than the average growth rate.The leaf root ratio of mixed R.soongarica was increased by 33.19%,while the root-shoot ratio was decreased.Biomass distribution of different species in different organs is different.R.soongaricabiomass is mainly distributed in roots,while S.passerinabiomass is mainly distributed in leaves.R.soongaricaroot biomass and S.passerinaleaf biomass are significantly affected by precipitation(P<0.05).
中文关键词	降水变化 ; 种间关系 ; 根冠比 ; 红砂 ; 珍珠
英文关键词	Precipitation change Interspecific relationship Root shoot ratio,Reaumuria soongarica Salsola passerina
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6953238
来源机构	甘肃农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/354165
作者单位	张鹏, 甘肃农业大学林学院, 兰州, 甘肃 730070, 中国.; 李毅, 甘肃农业大学林学院, 兰州, 甘肃 730070, 中国.; 单立山, 甘肃农业大学林学院, 兰州, 甘肃 730070, 中国.; 解婷婷, 甘肃农业大学林学院, 兰州, 甘肃 730070, 中国.
推荐引用方式 GB/T 7714	张鹏,李毅,单立山,等. 降水变化对混生红砂-珍珠生物量及分配的影响[J]. 甘肃农业大学,2021,29(3):1007-0435.
APA	张鹏,李毅,单立山,&解婷婷.(2021).降水变化对混生红砂-珍珠生物量及分配的影响.草地学报,29(3),1007-0435.
MLA	张鹏,et al."降水变化对混生红砂-珍珠生物量及分配的影响".草地学报 29.3(2021):1007-0435.