Arid
DOI10.1016/j.flora.2013.02.002
Alterations in canopy size and reproduction of Caragana stenophylla along a climate gradient on the Inner Mongolian Plateau
Ma, Cheng-Cang1; Zhang, Jian-Hua1; Guo, Hong-Yu1; Li, Qing-Fang1; Xie, Li-Na1; Gao, Yu-Bao1,2
通讯作者Ma, Cheng-Cang
来源期刊FLORA
ISSN0367-2530
EISSN1618-0585
出版年2013
卷号208期号:2页码:97-103
英文摘要

In this study, we examined the alterations in canopy size and reproduction of Caragana stenophylla along the climatic drought gradient on the Inner Mongolia Plateau, China. We found that the canopy area and height of C. stenophylla increased gradually with increase of drought stress from the semi-arid zone to the strongly arid zone. The proportions of sexual reproduction decreased and the asexual reproduction increased with increase of the climatic drought stress. The majority of C. stenophylla offspring grew (separately) outside shrubs in the semi-arid (63.9%) and the arid zones (45.8%). But in the strongly arid zone, C. stenophylla offspring only grew inside shrubs. With the increase of climatic drought stress the ramet radius increased, while the spacer length decreased. In both the semi-arid and arid zones, the spacer length was more than 2 times of the ramet radius. Thus, some spaces were kept between the crowns of ramets. On the other hand, the spacer length was less than 2 times of the ramet radius in the strongly arid zone, so that the crowns were closely intertwined. Our results demonstrate that with the increase of climatic drought stress and associated desertification, the reproduction of C. stenophylla changes from more sexual reproduction to more clonal propagation; offspring establishment strategy changes from having more outside-shrub offspring to having only inside-shrub offspring; the clonal architecture changes from guerrilla type to phalanx type. Alterations in the reproduction of C. stenophylla along the climatic drought gradient result due to an increase of its canopy size from the northeast to the southwest on the Inner Mongolia Plateau. (c) 2013 Elsevier GmbH. All rights reserved.


英文关键词Arid habitat Clonal architecture Drought stress Guerilla strategy Phalanx strategy Nurse plant
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000318210200003
WOS关键词SEXUAL REPRODUCTION ; MORPHOLOGICAL PLASTICITY ; CLONAL GROWTH ; DESERT ; HETEROGENEITY ; GUERRILLA ; AVAILABILITY ; POPULATIONS ; STRATEGY ; MOISTURE
WOS类目Plant Sciences ; Ecology
WOS研究方向Plant Sciences ; Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/177135
作者单位1.Tianjin Normal Univ, Coll Life Sci, Tianjin Key Lab Anim & Plant Resistance, Tianjin 300387, Peoples R China;
2.Nankai Univ, Coll Life Sci, Tianjin 300071, Peoples R China
推荐引用方式
GB/T 7714
Ma, Cheng-Cang,Zhang, Jian-Hua,Guo, Hong-Yu,et al. Alterations in canopy size and reproduction of Caragana stenophylla along a climate gradient on the Inner Mongolian Plateau[J],2013,208(2):97-103.
APA Ma, Cheng-Cang,Zhang, Jian-Hua,Guo, Hong-Yu,Li, Qing-Fang,Xie, Li-Na,&Gao, Yu-Bao.(2013).Alterations in canopy size and reproduction of Caragana stenophylla along a climate gradient on the Inner Mongolian Plateau.FLORA,208(2),97-103.
MLA Ma, Cheng-Cang,et al."Alterations in canopy size and reproduction of Caragana stenophylla along a climate gradient on the Inner Mongolian Plateau".FLORA 208.2(2013):97-103.
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