干旱区生态环境知识资源中心(Arid): 准噶尔荒漠小山蒜的形态与生物量特征及其相互关系

Arid

	准噶尔荒漠小山蒜的形态与生物量特征及其相互关系
其他题名	Morphology and Biomass Characteristics of Ephemeroid Plant Allium pallasii and Their Relationships in Junggar Basin,China
	陶冶 1; 张元明1 ; 全永威 2; 侯建秀 2
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2012
卷号	32 期号:5 页码:1328-1334
中文摘要	小山蒜(Allium pallasii)是中国新疆特有的类短命植物。调查了准噶尔荒漠16个20m*20m样地内小山蒜种群的分布概况,研究了小山蒜盛花期的生物学特征、器官生物量分配及其相互关系。结果表明:①小山蒜多生于沙丘中下部,密度为0.187株·m~(-2);平均株高为(22.935.15)cm,多为3片叶;花序近球形,平均半径(2.440.37)cm,纵断面角度211.39°60.4°,表面积和体积分别为(50.9534.19)cm~2和(43.3729.45)cm~3。②其形态指标(平均叶长、4个花球指标及鳞茎直径)间、生物量指标(根生物量除外)间,及二者之间多为显著(P<0.05)或极显著(P<0.01)正相关,协同生长关系较强。③小山蒜生物量分配呈鳞茎>花葶>花球>叶片>根的格局,根冠比为0.873,生殖分配占49.66%。④形态指标与生物量间均呈alpha<1的异速生长关系,而生物量指标间多为等速关系,其中地上、地下生物量间符合alpha=3/4的异速关系。⑤生物量估测表明,小山蒜单株地上生物量平均为0.312g,单株地下生物量平均为0.264g,种群总生物量密度仅为0.106g·m~(-2),其生物量在整个荒漠生态系统中可忽略不计,但它作为准噶尔荒漠重要而独特的种质资源,应从多个方面深入研究,同时进行适当保护。
英文摘要	Allium pallasii,an ephemeroid species,is widely distributed in Junggar Basin,China,and it plays a certain role in synusiae communities of the herbaceous plants in spring.The distribution of A.pallasii population in sixteen 20 m*20 m plots were surveyed by the method of whole plant excavation,and the biological characteristics,biomass allocation and their relationships were studied in this paper.Results indicate that(1) A.pallasii population is mostly distributed at the lower parts of sand dunes,and the population density is 0.187 individual per square meter;The mean shoot height is 22.93~5.15 cm,most of the individuals have 3 sheets of leaves;The inflorescence is nearly spherical,and the mean radius of the flowers is 2.44~0.37 cm,the mean angle of vertical section of the flowers is 211.39~60.4,and the surface area and volume of the flowers are 50.95~34.19 cm~2 and 43.37~29.45 cm~3,respectively.(2) There are markedly(P<0.05) or very markedly(P<0.01) positive correlations among morphological indices(mean leaf length,the four flower morphology indicators and the bulb diameter),among organ biomasses(except root biomass),and between morphological indices and organ biomasses of A.pallasii,indicating there existed evident cooperative growth relationships between the indices.(3) The organ biomass distribution order of A.pallasii is bulb>scape>flower>leaf>root,and the root/shoot ratio is 0.873,and the reproductive allocation ratio is 49.66%.(4) There are obviously allometric relationships between morphological indicators and organ biomasses with allometric exponents less then 1.0.The allometric exponents among organ biomasses are mostly close to 1.0,only the allometric exponent between aboveground and belowground biomass is 3/4.(5) The biomass measurement of A.pallasii samples showed that mean aboveground biomass of A.pallasii population is 0.312 g per individual,mean belowground biomass is 0.264 g per individual,and the total biomass density is only 1.06 g per square meter.It is founded that the ratio of A.pallasii biomass in the desert ecosystem is nearly negligible.However,as an important germplasm in Junggar basin,A.pallasii should be deeply studied on many aspects,and also should be protected properly.
中文关键词	小山蒜 ; 形态特征 ; 生物量 ; 异速生长 ; 类短命植物 ; 准噶尔荒漠
英文关键词	Allium pallasii morphological character biomass allometric growth ephemeroid plant the Junggar Desert
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:4636576
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/229056
作者单位	1.中国科学院新疆生态与地理研究所, 中国科学院干旱区生物地理与生物资源重点实验室, 乌鲁木齐, 新疆 830011, 中国; 2.新疆额尔齐斯河流域开发工程建设管理局, 乌鲁木齐, 新疆 830000, 中国
推荐引用方式 GB/T 7714	陶冶,张元明,全永威,等. 准噶尔荒漠小山蒜的形态与生物量特征及其相互关系[J]. 中国科学院新疆生态与地理研究所,2012,32(5):1328-1334.
APA	陶冶,张元明,全永威,&侯建秀.(2012).准噶尔荒漠小山蒜的形态与生物量特征及其相互关系.中国沙漠,32(5),1328-1334.
MLA	陶冶,et al."准噶尔荒漠小山蒜的形态与生物量特征及其相互关系".中国沙漠 32.5(2012):1328-1334.