中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Effects of sand burial disturbance on seedling growth of Nitraria sphaerocarpa

文献类型:期刊论文

作者Zhao, W. Z.; Li, Q. Y.; Fang, H. Y.
刊名PLANT AND SOIL
出版日期2007-06-01
卷号295期号:1-2页码:95-102
关键词biomass allocation sand burial depth seedling size seedling survival
ISSN号0032-079X
DOI10.1007/s11104-007-9265-x
通讯作者Zhao, W. Z.(zhaowzh@lzb.ac.cn)
英文摘要Nitraria sphaerocarpa Maxim. (Zygophyllaceae) is a desert shrub, emerged seedlings may easily be covered by sand, thus the influence of sand burial on seedling survival and growth was studied. The experiment was conducted under controlled greenhouse conditions. Seeds were sorted into three size-classes and buried at 2 cm depths in plastic pots filled with sand. Two weeks after seedling emergence, seedlings were buried in sand to various depths of 0, 33, 67, 100 and 133% of their mean height. Seedling survivorship, height, mass, relative height growth rate, absolute height growth rate, biomass allocation to root, biomass allocation to belowground stem and biomass allocation to aboveground stem were significantly affected by burial depth, however, seedling survivorship, mass, relative height growth rate were not significantly affected by seed size. In the unburied and partial burial treatments, individual seedlings exhibited high survivorship of approximately 85-100% for all size-classes seeds. However, only about 60, 39 and 43% seedlings survived when the burial depth reached 100% of their height, for large, medium and small sized seeds, respectively. When the burial depth increased to 133% of seedling height, no seedlings survived. Seedling height, mass and absolute height growth rate in partial burial treatments, were higher than those of the unburied and completely buried treatments. In each seed size class, with increasing burial depth, or in each burial depth, with decreasing seed size, there was a tendency that both biomass allocation to root and biomass allocation to belowground stem increased, while biomass allocation to aboveground stem decreased. The burial experiment of N. sphaerocarpa showed that partial burial at depth of 33 and 67% of seedling height increased seedling vigor, however, when burial depth reached the whole height of seedlings, it reduced the seedling vigor, and the burial at depth of 133% of their height, led to death of all seedlings.
收录类别SCI
WOS关键词AMMOPHILA-BREVILIGULATA ; CAKILE-EDENTULA ; ELYMUS-FARCTUS ; EMERGENCE ; SIZE ; GERMINATION ; DEPTH ; REPRODUCTION ; ADAPTATIONS ; ALLOCATION
WOS研究方向Agriculture ; Plant Sciences
WOS类目Agronomy ; Plant Sciences ; Soil Science
语种英语
WOS记录号WOS:000247279100008
出版者SPRINGER
URI标识http://www.irgrid.ac.cn/handle/1471x/2555913
专题寒区旱区环境与工程研究所
通讯作者Zhao, W. Z.
作者单位1.Chinese Acad Sci, Engn Res Inst, Chinese Ecosyst Network Res Linze Inland River Ba, Hydrol Lab & Appl Ecol, Lanzhou 730000, Peoples R China
2.Chinese Acad Sci, Inst Geograph Sci & Nat Resources Res, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714
Zhao, W. Z.,Li, Q. Y.,Fang, H. Y.. Effects of sand burial disturbance on seedling growth of Nitraria sphaerocarpa[J]. PLANT AND SOIL,2007,295(1-2):95-102.
APA Zhao, W. Z.,Li, Q. Y.,&Fang, H. Y..(2007).Effects of sand burial disturbance on seedling growth of Nitraria sphaerocarpa.PLANT AND SOIL,295(1-2),95-102.
MLA Zhao, W. Z.,et al."Effects of sand burial disturbance on seedling growth of Nitraria sphaerocarpa".PLANT AND SOIL 295.1-2(2007):95-102.

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来源:寒区旱区环境与工程研究所

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