干旱区生态环境知识资源中心(Arid): 罗布泊地区引种植物生理生化指标的主成分及其聚类分析

Arid

	罗布泊地区引种植物生理生化指标的主成分及其聚类分析
其他题名	Principal Components and Cluster Analysis on the Physiological and Biochemical Indexes of Introduced Plants in Lop Nur
	高洁 1; 李从娟 2; 徐新文2 ; 孙永强 2
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2018
卷号	35 期号:1 页码:199-206
中文摘要	对罗布泊人工生态示范区中20种主要引种植物的叶片生理生化指标进行了测定,运用相关性分析、主成分分析和聚类分析等方法分析其抗旱及耐高温能力。结果表明: ①在罗布泊人工生态示范区的正常灌溉制度下,示范区内引种植物的光合色素和游离脯氨酸含量处于较高水平,且两者之间具有极显著相关性。②主成分分析将被测指标用4个主成分来表示,分别为反映植物叶片光合作用能力、植物叶片酶活性、植物的耐旱性和植物叶片内有机溶剂含量的综合指标。③聚类分析将引种植物分为4类:第Ⅰ类为生长状况一般的罗布麻(Apocynum venetum L.)、沙拐枣(Calligonum mongolicum Turcz.)等植物;第Ⅱ类是生长状况较好的黑果枸杞(Lycium barabrum L.);第 Ⅲ类是作为优势物种的滨藜(Atriplex patens Iljin.)和苦马豆(Sphaerophysa salsula DC.);第Ⅳ类是长势优良的沙枣(Elaeagnus angustifolia L.)。
英文摘要	Lop Nor is a desert area in the eastern part of the Taklimakan Desert in Xinjiang,China. It is extremely arid and there are scarcely any plants in this region. In 2013,Xinjiang Institute of Ecology and Geography, the Chinese Academy of Sciences,established a 1.3 hm~2. artificial ecological demonstration zone and introduced more than 70 plant species. Because of the extremely harsh natural conditions, fewer than 30 species have been introduced so far. In the process of growth and development,plants will be subject to a variety of abiotic factors. Water and temperature are the main factors affecting plant growth. Under the conditions of high temperature and water shortage, the plants adjust their physiological and biochemical processes to adapt the changes of temperature and moisture. In addition, the plants form a certain high temperature resistance and drought resistance mechanism. In order to study the drought resistance and high temperature resistance capability of different species, the high resistance species groups suitable for the severe environment and ensure the introduction of artificial vegetation to Lop Nor, the correlation, principal component and cluster methods were used to analyze the physiological and biochemistry indicators of 20 main introduced plant species in the artificial ecological demonstration garden in the Lop Nur area. The results are as follows: ① There was an extremely significant correlation between photosynthetic pigment and free proline content in leaves,both of them were at a high level under normal irrigation system; ② The indexes of plants were measured by four principal components, they were the photosynthetic capacity,enzyme activity of plant leaves, drought tolerance and organic solvent content in plant leaves. The principal component factor score and ranking showed that Elaeagnus angustifolia L.,Atriplex patens Iljin. and Sphaerophysa salsula DC. were the top 3,which revealed that the growth status of the three species was the best; ③ When the Euclidean distance was 7, the plants were divided into four categories by cluster analysis: (Ⅰ) General growth plants, including Apocynum venetum L., Calligonum mongolicum Turcz. and other plants,accounting for 80% of the total samples, the high sugar content in leaves of these plants was the main physiological characteristic; (Ⅱ) Good growth plant,Lycium barabrum L., the high photosynthetic pigment content high soluble protein and high free proline content in leaves were the main physiological characteristics; (Ⅲ) Dominant plants,Atriplex patens Iljin. and Sphaerophysa salsula DC., the high photosynthetic pigment content but the low soluble sugar and free proline content in leaves of these plants were the main physiological characteristics; (Ⅳ) Best growth plant,Elaeagnus angustifolia L., the extremely high Chla /b value in leaves but low one in other organic solvents were the main physiological characteristics. The results also showed that the physiological mechanism of introduced plants in the severe environment varied greatly. How do these dominant plants adapt the severe environmental conditions in their morphology and organization structure? How does the physiology of the plant change in such severe environment? What are the most significant factors for environmental stress change? What are the causes of this difference in the climate mechanisms of different plants adapting to drought? These issues should be carefully analyzed for future study.
中文关键词	引种植物 ; 植物生理 ; 主成分分析 ; 聚类分析 ; 极端生境 ; 罗布泊
英文关键词	introduced plants plant physiology principal component analysis cluster analysis severe habitat Lop Nor
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:6157154
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/2XILL650/237633
作者单位	1.中国科学院新疆生态与地理研究所;;中国科学院大学, 国家荒漠- 绿洲生态建设工程技术研究中心;;, 乌鲁木齐;;, 新疆;;北京 830011;;100049, 中国; 2.中国科学院新疆生态与地理研究所, 国家荒漠- 绿洲生态建设工程技术研究中心, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	高洁,李从娟,徐新文,等. 罗布泊地区引种植物生理生化指标的主成分及其聚类分析[J]. 中国科学院新疆生态与地理研究所,2018,35(1):199-206.
APA	高洁,李从娟,徐新文,&孙永强.(2018).罗布泊地区引种植物生理生化指标的主成分及其聚类分析.干旱区研究,35(1),199-206.
MLA	高洁,et al."罗布泊地区引种植物生理生化指标的主成分及其聚类分析".干旱区研究 35.1(2018):199-206.