干旱区生态环境知识资源中心(Arid): 荒漠植物持水力研究

Arid

	荒漠植物持水力研究
其他题名	Water-retaining Capability of Desert Plants
	何明珠 1; 王辉 2; 陈智平 2
ISSN	1000-694X
出版年	2006
卷号	26 期号:3 页码:403-408
中文摘要	持水力是表征植物耐早性的一个重要指标。对62种荒漠植物，包括10种乔木、39种灌木和13种草本植物失水过程进行了测定，并对累计失水曲线进行逻辑方程的拟合，拟合方程的决定系数都在0．8以上。按照枝、叶构件所拟合的逻辑方程拐点不同，将荒漠植物分为弱持水型、中等持水型和强持水型。灌木和草本植物的持水能力较乔小植物强。从枝构件的分类结果分析，属于弱持水型、中等持水型和强持水型荒漠植物的植物种类依此为23种、26种及13种，说明多数植物枝条的持水能力不太强。而从叶构件的分类结果分析，依次有2种，19种和41种植物属于上述3种类型，说明大多数荒漠植物的叶片的持水能力较枝条强。
英文摘要	Water-retaining capability is one of the important indexes that indicate drought resistance capacity of plants. The dehydration process of 62 desert plants, including 10 tree species, 39 brush species and 13 herb species, were analyzed with fitting of Logistic curves, whose correlation coefficient are all more than 0.8. According to turn points （TP） distribution of different Logistic curves, those plants can be sorted into weak water-retaining capability type, medium water-retaining capability type and strong water-retaining capability type. The water-retaining capability of brush and herb species is stronger than that of tree species. Among the 62 desert plants there are 23 weak, 26 medium and 13 strong species respectively based on classification of branch configuration, which indicates that the branch water-retaining capability of most species is not strong enough; whereas there are 2, 19 and 41 species correspondingly according to classification of leave configuration, which suggestes that the water-retaining capability of leaves is stronger than that of branches.
中文关键词	荒漠植物 ; 持水力 ; 逻辑方程
英文关键词	desert plants water-retaining capability Logistic equation
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:2451629
来源机构	中国科学院西北生态环境资源研究院 ; 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/2XILL650/220450
作者单位	1.中国科学院寒区旱区环境与工程研究所沙坡头沙漠试验研究站, 兰州, 甘肃 730000, 中国; 2.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	何明珠,王辉,陈智平. 荒漠植物持水力研究[J]. 中国科学院西北生态环境资源研究院, 甘肃农业大学,2006,26(3):403-408.
APA	何明珠,王辉,&陈智平.(2006).荒漠植物持水力研究.,26(3),403-408.
MLA	何明珠,et al."荒漠植物持水力研究".26.3(2006):403-408.