干旱区生态环境知识资源中心(Arid): 沙木蓼和沙枣对地下水位变化的生理生态响应Ⅰ、叶片养分、叶绿素、可溶性糖和淀粉的变化

Arid

	沙木蓼和沙枣对地下水位变化的生理生态响应Ⅰ、叶片养分、叶绿素、可溶性糖和淀粉的变化
其他题名	Ecophysiological responses of two xerophytes atraphaxis ffrutescens and elaeagnus angustifolia to the change of groundwater depth in arid area I. changes in leaf nutrient, chlorophyll, soluble sugar and starch contents
	赵广东 1; 刘世荣 1; 马全林2
来源期刊	植物生态学报
ISSN	1005-264X
出版年	2003
卷号	27 期号:2 页码:228-234
中文摘要	在甘肃民勤沙生植物园内利用植物蒸腾耗水量观测场，研究了两种优势旱生植物沙木蓼（Atraphaxis frutescens)和沙棘（Elaeagnus angustifolia)叶片中的叶绿素、可溶性糖，淀粉和N、P、K、含量等对不同地下水深度（1－3．4m）的响应。结果表明：1）1.4m,2.4m和3．4m 3种不同地的地下水深度处理，产生了3种差异显著的土壤水分梯度；2）地下水深度的变化导致了这两种旱生植物叶绿素a、叶绿素b、叶绿素总量、叶绿素a与叶绿素b的比值等的显著变化（P＜0．01）；3）地下水深度的增加引起了两种植物叶片可溶性糖含量的升高和淀粉含量的降低；4）地下水深度的增加引起了两种植物叶片中N、P、K含量的降低；5）不同的地下水深度引起沙棘和沙木蓼叶绿素a、叶绿素b、叶绿素总量、叶绿素a与叶绿素b的比值、N、P、K含量，可溶性糖和淀粉增加或减少的程度不同。沙棘是非豆科固氮植物，两者的差异是否与固氮作用相关还有待于进一步研究。
英文摘要	In order to elucidate the adaptation and ability of different xerophilous plants to soil water availability and provide the theories of vegetation regeneration for western desert areas in China, the photosynthetic physio-ecological characteristics and the contents of leaf chlorophyll, soluble sugar, starch, nitrogen, phosphorus and kalium of two desert plants ( Atraphaxis frutescens and Elaeagnus angustifolia in response to ground water availability were investigated in a controlled environment at the Plant Transpiration Consume Water Observation Station in Minqin Desert Botanical Garden, Gansu province.In this experiment, the depths of groundwater (DGW) were set at three levels: 1.4 m, 2.4 m and 3.4 m. In each treatment, the two desert plants were transplanted to the observation sites with different DGW after growing naturally for 3 or 4 years. The contents of leaf chlorophyll, soluble sugar, starch, nitrogen, phosphorus and kalium of the two desert plants were measured by the methods described in Experimental manual of plant physiology" and the photosynthetic measurements were conducted by using an open gas-exchange system (LI-6400P, LI-CORInc. Lincoln, NE.USA).The results showed that: 1) the three different DGW treatments resulted in a marked soil moisture gradient; 2) The changes of DGW led to significant changes in the leaf content of chlorophyll a (Chi a) , chlorophyll b (Chi b), total chlorophyll (Chi a + Chi b) and the ratio of Chi a to Chi b (Chi a/Chl b) (p < 0.01) ; 3) The increment of DGW depths caused the increase of soluble sugar content and the decrease of starch content irrespective of plant species, but the extent of these changes varied between the two species; 4) Increased DGW caused a decrease in the content of nitrogen, phosphorus and kalium; 5) The changes of either increase or decrease in chlorophyll a, chlorophyll b, total chlorophyll, nitrogen, phosphorus, kalium, soluble sugar, starch and the ratio of Chi a and Chi b of A. frutescens and E. angustifolia varied with DGW.The original conclusions were drawn as follows; compared with A. frutescens , E. angustifolia may be more adaptive to the dry desert environment. Since E. angustifolia is a nitrogen-fixing species, further studies are needed to verify whether the differences between these two species are related to nitrogen fixation.
中文关键词	沙木蓼 ; 沙枣 ; 地下水位变化 ; 叶片养分 ; 叶绿素 ; 可溶性糖 ; 淀粉 ; 土壤水分梯度 ; 旱生植物 ; 生理指标
英文关键词	Soli water availability Xerophilous plants Physiological characters
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:1280598
来源机构	甘肃省治沙研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/204564
作者单位	1.中国林业科学院研究院林林生态环境与保护研究所, 北京 100091, 中国; 2.甘肃省治沙研究所, 武威, 甘肃 733000, 中国
推荐引用方式 GB/T 7714	赵广东,刘世荣,马全林. 沙木蓼和沙枣对地下水位变化的生理生态响应Ⅰ、叶片养分、叶绿素、可溶性糖和淀粉的变化[J]. 甘肃省治沙研究所,2003,27(2):228-234.
APA	赵广东,刘世荣,&马全林.(2003).沙木蓼和沙枣对地下水位变化的生理生态响应Ⅰ、叶片养分、叶绿素、可溶性糖和淀粉的变化.植物生态学报,27(2),228-234.
MLA	赵广东,et al."沙木蓼和沙枣对地下水位变化的生理生态响应Ⅰ、叶片养分、叶绿素、可溶性糖和淀粉的变化".植物生态学报 27.2(2003):228-234.