干旱区生态环境知识资源中心(Arid): 风吹、沙埋对沙地植物幼苗生长和光合蒸腾特性的影响

Arid

	风吹、沙埋对沙地植物幼苗生长和光合蒸腾特性的影响
其他题名	Effects of wind blow and sand burial on the seedling growth and photosynthetic and transpiration rates of desert plants
	赵哈林1 ; 何玉惠 1; 岳广阳 1; 周瑞莲 2
来源期刊	生态学杂志
ISSN	1000-4890
出版年	2010
卷号	29 期号:3 页码:413-419
中文摘要	为了掌握风吹、沙埋对沙地植物一些生理生态学特性的影响,2006-2007年在科尔沁沙地对优势固沙植物小叶锦鸡儿进行了风吹和沙埋试验.风吹试验设为对照(不吹风)、软风(2 m·s~(-1))、微风(4 m·s~(-1))、和风(6 m·s~(-1))和劲风(8 m·s~(-1))5个处理;沙埋试验设为对照、轻度、中度、重度和严重沙埋5个处理,沙埋深度分别为株高的0%、33%、66%、100%和133%.结果表明:软风(2 m·s~(-1))的持续风吹可使植物叶片蒸腾速率和净光合速率略有下降,和风(6 m·s~(-1))和劲风(8 m·s~(-1))的持续风吹可促进其蒸腾速率和净光合速率明显增加,而微风(4 m·s~(-1))的持续风吹对植物蒸腾速率和光合速率影响不明显;轻度沙埋可以同时促进植物地上茎叶和地下根系的生长和生物产量的提高,中度沙埋仅可促进其根系生长和生物产量的提高,但对其高生长有一定抑制作用,重度沙埋和严重沙埋可对其生长造成严重威胁,甚至导致死亡;锦鸡儿作为沙地一种优势固沙植物能够通过生长调节和生理调节来适应一定程度的风吹和沙埋,因而对风沙环境具有较强的适应性,但重度或严重风吹、沙埋仍然会导致其严重受损,甚至死亡,因此采用锦鸡儿进行植物固沙时应注意不要将其种植在风沙活动过于强烈的地方.
英文摘要	Aimed to understand the effects of wind blow and sand burial on the physiological and ecological properties of desert plants,a field experiment with Caragana microphilla was conducted in Horqin Sand Land in 2006 and 2007.The wind blow experiment had five treatments,i.e.,o,2,4,6,and 8 m·s~(-1) of wind velocity,and the sand burial experiment also had five treatments,i.e.,none,light,moderate,heavy,and severe sand burial,with 0,33%,66%,100%,and 133% of plant height sand-buried.A continuous wind blow with a velocity of 2 m·s~(-1) resulted in a slight decrease of photosynthetic rate and transpiration rate,that of 6-8 m·s~(-1) increased the two rates obviously, while a continuous wind blow with a velocith of 4 m·s~(-1) had no obvious effects on the photosynthetic and transpiration rates.Light sand burial promoted the stem,leaf,and root growth,and increased the biomass of C.microphilla,moderate sand burial only promoted the root growth and increased the biomass but restrained the height growth,while heavy and severe sand burial injured the plant growth seriously,even resulted in plant death.As a dominant sand-fixing plant,C.microphilla could adapt the wind blow and sand burial to a certain degree through regulating its growth rhythm and physiological characteristics,and thus,had strong capability to adapt wind-sand environment.However,severe wind blow and sand burial could result in a severe injury to the plant,even in plant death.Therefore,C.microphilla should be planted in the place without strong wind-sand activity when used for fixing mobile sand.
中文关键词	风吹 ; 沙埋 ; 沙地植物 ; 影响 ; 机制
英文关键词	wind-blowing sand burial desert plant effect mechanism.
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ECOLOGY
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:3835227
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/225555
作者单位	1.中国科学院寒区旱区环境与工程研究所, 兰州, 甘肃 730000, 中国; 2.鲁东大学生命科学学院, 烟台, 山东 264025, 中国
推荐引用方式 GB/T 7714	赵哈林,何玉惠,岳广阳,等. 风吹、沙埋对沙地植物幼苗生长和光合蒸腾特性的影响[J]. 中国科学院西北生态环境资源研究院,2010,29(3):413-419.
APA	赵哈林,何玉惠,岳广阳,&周瑞莲.(2010).风吹、沙埋对沙地植物幼苗生长和光合蒸腾特性的影响.生态学杂志,29(3),413-419.
MLA	赵哈林,et al."风吹、沙埋对沙地植物幼苗生长和光合蒸腾特性的影响".生态学杂志 29.3(2010):413-419.