干旱区生态环境知识资源中心(Arid): 沙埋对河西走廊荒漠绿洲过渡带一年生草本植物的影响

Arid

	沙埋对河西走廊荒漠绿洲过渡带一年生草本植物的影响
其他题名	Effects of sand-buried on annual herbaceous plants in desert-oasis ecotone of Hexi Corridor Gansu,China
	宋冰; 王国华; 缑倩倩; 席璐璐
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2021
卷号	41 期号:3 页码:1000-694X
中文摘要	一年生草本植物是荒漠绿洲过渡带人工固沙植物群落草本层的优势植物类群,由于风沙活动剧烈,风蚀和沙埋成为一年生草本植物生存的关键选择动力因素。以河西走廊荒漠绿洲过渡带典型一年生草本植物狗尾草(Setaria viridis)、虎尾草(Chloris virgata)、白茎盐生草(Halogeton arachnoideus)和雾冰藜(Bassia dasyphylla)为研究对象,通过0(对照)、1、2、3、5、10、15 cm深度沙埋试验,探寻沙埋对一年生草本植物的影响。结果表明:(1)4种一年生草本植物在01 cm埋深出苗率最高,狗尾草最大出苗深度为10 cm,虎尾草和雾冰藜为5 cm,白茎盐生草为3 cm;(2)不同沙埋深度下,4种一年生草本植物的生长(株高和总生物量)和繁殖(种子数量和百粒重)高值区位于23 cm埋深,3 cm往下虎尾草和雾冰藜存活率显著下降,而狗尾草仍保持较高存活率;(3)不同沙埋深度下,4种一年生草本植物的渗透调节物质(可溶性糖、可溶性蛋白和游离脯氨酸)含量在23 cm埋深达到最高,丙二醛(MDA)含量高值主要位于35 cm埋深,叶绿素含量在12 cm埋深最高,2 cm往下开始降低;(4)一年生草本植物的生长存活与游离脯氨酸和叶绿素含量呈极显著相关关系,表明二者对保持植物叶片水分平衡和保证光合作用、维持植物正常生长起着更关键的作用。研究可为荒漠绿洲过渡带一年生草本植物恢复提供科学依据。
英文摘要	Annual herbaceous plants are the dominant plant groups in the herb layer of the artificial sand-fixing plant community in the desert-oasis ecotones.In order to assess the impact of the depth of sand burial on the emergence,growth and reproduction of annual herbaceous plants,the typical annual herbaceous plants Setaria viridis,Chloris virgata,Halogeton arachnoideus and Bassia dasyphylla were selected in a typical desert oasis ecotone of Hexi Corridor as the research object,through 7 sand burial depth experiments of 0(CK),1,2,3,5,10 cm and 15 cm,aiming to explored the impact mechanism of sand burial on annual herb.The research results showed that:(1)Four kinds of annual herb plants had the highest emergence rate at a depth of 0-1 cm,the maximum emergence depth of S.viridis was 10 cm,C.virgata and B.dasyphylla 5 cm,and H.arachnoideus 3 cm;(2)Under different sand depths,the growth(plant height and total biomass)and reproduction(number of seeds and 100-seed weight)of the four annual herbaceous plants were high in 2-3 cm.After 3 cm,the survival rate of Chloris virgata and B.dasyphylla significantly decreased,and S.viridis still maintained a high survival rate.(3)Under different sand burial depths,the content of osmotic adjustment substances(soluble sugar,soluble protein and free proline)of four annual herbaceous plants reached the highest at 2-3 cm,and malondialdehyde(MDA))the high content was mainly located at the depth of 3-5 cm,the chlorophyll content was the highest at 1-2 cm,and then started to decreased after 2 cm;(4)Correlation analysis showed that the growth and survival of annual herb plants are extremely significantly correlated with free proline and chlorophyll content The relationship showed that the two played a more critical role in maintaining plant leaf water balance,ensuring photosynthesis,and maintaining normal plant growth.The research can provide a scientific basis for the restoration of annual herbaceous plants in the desert-oasis ecotones.
中文关键词	荒漠绿洲过渡带 ; 一年生草本植物 ; 沙埋阈值 ; 生理特征 ; 生长存活
英文关键词	desert-oasis ecotones annual herbaceous plants sand burial threshold physiological characteristics growth and survival
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Plant Sciences
CSCD记录号	CSCD:6981193
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/365454
作者单位	宋冰, 山西师范大学地理科学学院, 临汾, 山西 041000, 中国.; 席璐璐, 山西师范大学地理科学学院, 临汾, 山西 041000, 中国.; 王国华, 山西师范大学地理科学学院;;中国科学院西北生态环境资源研究院, ;;中国科学院临泽内陆河流域研究站, 临汾;;兰州, 山西;;甘肃 041000;;730000, 中国.; 缑倩倩, 山西师范大学地理科学学院;;中国科学院西北生态环境资源研究院, ;;中国科学院临泽内陆河流域研究站, 临汾;;兰州, 山西;;甘肃 041000;;730000, 中国.
推荐引用方式 GB/T 7714	宋冰,王国华,缑倩倩,等. 沙埋对河西走廊荒漠绿洲过渡带一年生草本植物的影响[J],2021,41(3):1000-694X.
APA	宋冰,王国华,缑倩倩,&席璐璐.(2021).沙埋对河西走廊荒漠绿洲过渡带一年生草本植物的影响.中国沙漠,41(3),1000-694X.
MLA	宋冰,et al."沙埋对河西走廊荒漠绿洲过渡带一年生草本植物的影响".中国沙漠 41.3(2021):1000-694X.