干旱区生态环境知识资源中心(Arid): 塔里木河下游21种荒漠植物繁殖体形态特征及对环境的适应

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	塔里木河下游21种荒漠植物繁殖体形态特征及对环境的适应
其他题名	Morphological Characters and Survival Strategy of Diaspores of the Main Desert Plants in the Lower Reaches of Tarim River,Xinjiang,China
	赵新风 1; 朱艳芬 2; 徐海量1 ; 叶茂 2; 李媛 1
ISSN	1000-4025
出版年	2009
卷号	29 期号:2 页码:283-290
中文摘要	以塔里木河下游分属于9科16属的21种荒漠植物为对象,调查了它们的植冠种子库情况以及繁殖体的附属物、形状(三维方差)、大小(三维之和)及质量(百粒重)等形态特征,并探讨了各种繁殖体的生态适应对策.结果表明:(1)13种荒漠植物可利用植冠种子库来躲避环境干扰:7种繁殖体具绢毛,2种繁殖体具翅,1种繁殖体具芒,3种繁殖体具冠毛,可利用风力实现传播与定居,而且它们可利用有水时期的速萌特性来适应当地生态输水这一辅助措施;5种繁殖体形状远离球形(三维方差≥0.126),6种繁殖体形状接近圆球形(三维方差＜0.06).(2)5种具速萌特性的繁殖体(形状圆筒形、圆锥形和蝌蚪形)与8种具有持久土壤种子库的繁殖体(三维方差较小≤0.1且三维之和≤2.75 mm)利用它们互补的生态适应对策使其在研究区成功定居与繁衍; 13种以r-型生活史对策为主且粒小质轻的繁殖体(三维之和≤2.75 mm,单粒重<1 mg)与4种粒大质重的繁殖体(三维之和≥4.8 mm,单粒重＞3.3 mg)利用其互补式繁殖对策将研究区生物多样性维持于一定水平.(3)7～9月份为一年生草本、多年生草本、(半)灌木植物及乔木同时落种的时期,可将人工输水集中于这一时期以实现研究区种子最大数量地萌发.
英文摘要	In this paper we investigated the canopy characteristics of 21 diaspores (belong to 9 families, 16 genera) in the lower reaches of Tarim River, analyzed the diaspores morphology, shape (three-dimension varience) ,size (sum of three-dimension) and weight (100- grain weight) characteristics,etc. The ecological adapting strategies are further probed into. The results show that-(l)There were 13 plants can use canopy to avoid environmental disturbance among the studied 21 desert plants;7 diaspores have hairs,2 diaspores have alulaes,l diaspore has awn,3 diaspores have pappus. They can use wind power to spread and settle,in addition,they can also use quickly germination property to adapt to the local ecological water supply;5 dia-spores shape stands aloof from round sphere( three-dimension variance≥0. 126) and 6 diaspores shape close to round sphere (three-dimension variance<0. 06). (2)In terms of the special shape of diaspores,5 diaspores with quickly germination property (with cylindrical,cone and tadpole-shape) and 8 diaspores with persistent soil seed bank (three-dimension variance≤0. 1 and sum of three-dimension ≤2. 75 mm) use their complementary ecologic adaptation strategy to reproduce in the lower reaches of Tarim River; 13 small and light diaspores(sum of three-dimension≤2. 75 mm,single-grain weight <1 mg) mainly have r-type life history strategy and 4 large and heavy diaspores (sum of three-dimension≥4. 8 mm,single-grain weight>3. 3 mg) use the complementary ecologic adaptation strategy to keep local living creature diverse in a level. (3) The period from July to September was the time that annual herb,perennial herb, (semi) shrub and arbor throw seeds to land. Therefore,the water supply should be focused on this period to promote the most germination quantity.
中文关键词	荒漠植物 ; 繁殖体 ; 附属物 ; 形态特征 ; 生存对策 ; 塔里木河下游
英文关键词	desert plants diaspores appurtenance morphological character survival strategy the lower rea-ches of Tarim River
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:3606878
来源机构	中国科学院新疆生态与地理研究所 ; 新疆师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/224345
作者单位	1.中国科学院,新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国; 2.新疆师范大学,地球科学与旅游学院, 乌鲁木齐, 新疆 830054, 中国
推荐引用方式 GB/T 7714	赵新风,朱艳芬,徐海量,等. 塔里木河下游21种荒漠植物繁殖体形态特征及对环境的适应[J]. 中国科学院新疆生态与地理研究所, 新疆师范大学,2009,29(2):283-290.
APA	赵新风,朱艳芬,徐海量,叶茂,&李媛.(2009).塔里木河下游21种荒漠植物繁殖体形态特征及对环境的适应.,29(2),283-290.
MLA	赵新风,et al."塔里木河下游21种荒漠植物繁殖体形态特征及对环境的适应".29.2(2009):283-290.