干旱区生态环境知识资源中心(Arid): 新疆南准噶尔荒漠优势植物的化学成分含量特点

Arid

	新疆南准噶尔荒漠优势植物的化学成分含量特点
其他题名	The Characteristics of Element Content of Dominant Species in South Junggar Desert, Xinjiang
	孔令韶; 郭柯; 王其兵
来源期刊	生态学报
ISSN	1000-0933
出版年	2002
卷号	22 期号:8 页码:1202-1210
中文摘要	南准噶尔荒漠62种植物8种元素的含量测定结果显示，含量算术平均值的大小顺序为Na>K>Ca>S>P>Al>Fe>Mn，与阿拉善荒漠植物元素含量的顺序一致。其中，Mn、Fe、Al、Na、S的含量变异系统数比P、K和Ca的大。植物元素含量之间相关分析结果表明，Fe与Al、S与P、Na与S呈极显著正相关，表明荒漠植物对它们的吸收是协同的，而Fe与K显著负相关，表明植物对它们的吸收具有拮抗作用。聚类分析和排序结果说明不同生态功能群植物都有自身的元素含量特点，盐生植物Na、S含量高，沙生植物为高K低Na含量功能群植物。
英文摘要	The contents of 8 elements, i. e. Na, Ca, S, P, Al, Fe and Mn, in 62 plant species in South Junggar desert were studied. These the climate was continental arid, with an annual precipitation of 110-220mm falling mainly in the spring and summer and a potential annual evaporation of about 2000mm. Along with the various but regular topography, various types of soil occurred in the desert. The vegetation was sparse in coverage. Dominant species of the communities were mainly of Chenopodiaceae, Compositae, Cruciferae, Leguminosae and Graminosae. They were Seriphidium borotalense, Ceratocarpus arenarius, and Petresimonia brachiata on the alluvial fans; Reaumuria soongorica and Haloxylon ammodendron on the alluvial plain, with Tamarix ramosissima often occurred in the relatively low places; Haloxylon persicum and some grasses on the fixed sandland; Kalidium foliatum, K. caspicum, Halocnemum strobilaceum and Suaeda physophora on saline land or salinized soil; Phragmites australis and Achnatherum splendens at the edge of alluvial fans where the groundwater was shallow and even seeps out on ground surface. Plant materials were collected during two periods between 1959 and 1963 and between 1989 and 1993. 400 samples of above ground parts for herbaceous species and leaves of twigs for woody plants were collected. The contents of the 8 elements were determined in normal method of chemical analysis. The results show the contents of these elements and their variations differed among the 72 species: sorted by the mean content, a sequence was Na>K>Ca>S>P>Al>Fe>Mn. This was quite similar to that in Alashan desert, Inner Mongolia. The variation coefficients of Mn, Fe, S, Na, Al, Ca, K and P were 1.875, 1.695, 1.392, 1.302, 1.062, 0.894, 0.491, respectively. The content of each of the elements also different among samples of the same species and from different environments. The variation coefficient of P was relative large, even significantly larger than that among species. In contrast, the variation coefficients of K and Ca were relatively small. Similar to those found from the plants in Alashan desert, the contents of pairs of elements, i. e. Fe and Al, S and P, Na and S, in these species showed significantly positive correlation. It indicates that these desert plants absorbed these pairs of elements in coordination. The correlation coefficient between the contents of Fe and K was significantly negative, suggesting the two elements might repel each other in absorption. The results of clustering and ordination of 62 species and their communities, based on the element contents, also demonstrate that each ecologically functional group of species had its characteristics of element content. Saline plants had high content of Na and S. Plants preferring to grow on sandland had high content of K, and low content of Na, and lower ratios of Fe to Al than other plants.
中文关键词	荒漠植物 ; 元素含量 ; 生态功能群 ; 聚类 ; 排序
英文关键词	desert plants element content in plant ecologically functional group clustering ordination
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:1067479
来源机构	中国科学院植物研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/203389
作者单位	中国科学院植物所, 植被数量生态学开放研究实验室, 北京 100093, 中国
推荐引用方式 GB/T 7714	孔令韶,郭柯,王其兵. 新疆南准噶尔荒漠优势植物的化学成分含量特点[J]. 中国科学院植物研究所,2002,22(8):1202-1210.
APA	孔令韶,郭柯,&王其兵.(2002).新疆南准噶尔荒漠优势植物的化学成分含量特点.生态学报,22(8),1202-1210.
MLA	孔令韶,et al."新疆南准噶尔荒漠优势植物的化学成分含量特点".生态学报 22.8(2002):1202-1210.