新疆呼图壁种牛场地区13种优势植物水溶性盐分的含量特点及数量分析  

QUANTITATIVE ANALYSIS AND CHARACTERISTICS OF WATER-SOLUBLE SALT CONTENTS IN 13 DOMINANT PLANT SPECIES IN THE AREA OF HUTUBI CATTLE FARM, XINJIANG

作　　者：马茂华[1] 孔令韶[1] 

机构地区：[1]中国科学院植物研究所

出　　处：《生态学报》1996年第5期509-516,共8页Acta Ecologica Sinica

基　　金：国家自然科学基金

摘　　要：通过对新疆呼图壁种牛场地区１３种耐盐植物水溶性盐分含量的分析，结果阐述了盐分分布和积累的特点：１）大部分植物在盐分含量水平上是：Ｎａ＋＞Ｋ＋＞Ｍｇ２＋＞Ｃａ２＋，Ｎａ＋超过２００００μｇ／ｇ，Ｃａ２＋不足８００μｇ／ｇ；Ｃｌ－达４．１６％，仅为０．１１％。全盐量平均为２５．８１％；２）和Ｃａ２＋的变异系数较高，其中Ｃａ２＋达到２０８．７０％，Ｍｇ２＋和Ｋ＋相对较低；３）盐节木（Ｈａｌｏｃｎｅｍｕｍｓｔｒｏｂｉｌａｃｅｕｍ）、有叶盐爪爪（Ｋａｌｉｄｉｕｍｆｏｌｉａｔｕｍ）、里海盐爪爪（Ｋ．ｃａｓｐｉｃｕｍ）和囊果碱蓬（Ｓｕｓｅ－ｄａｐｙｓｏｐｈｏｒａ）１，２年生枝叶中的盐分含量高于多年生枝，但Ｃａ２＋含量低于多年生枝；４）不同植物种的盐分含量季节变化有较大差异。相关分析表明：和和Ｋ＋、Ｃｌ－和Ｎａ＋、和Ｍｇ２＋、Ｃｌ＋和全盐量以及Ｎａ＋和全盐量之间在０．００１水平上呈正相关；和全盐量以及Ｃａ２＋和之间在０．０１水平上呈正相关。以水溶性盐分数据对１３种植物进行ＴＷＩＮＳＰＡＮ分类和ＤＣＡ排序，划分出聚集Ｎａ＋、Ｃｌ＋、Ｃａ２＋等植物类型，为耐盐牧草的利用和改良提供了科学的依据。Through analysis of water-soluble salt contents in 13 dominant plant species in the area of Hutubi Cattle Farm, Xinjiang, the characteristics of their distributions and accumulations are expounded:1) on the level of water-soluble salt contents in most plant species, Na+>K>Mg2+>Ca2+, Cl-, Na+ was more than 20, 000 μg· g-1, Ca2+was less than 800 μg· g-1, Cl- reached 4. 16%, was only 0. 11 %, the range of total salt contents was 7. 19 % ￣45. 1 % 1 2) In different plant species, the coefficient of variations of and Ca2+ were higher , the coefficient of variations of Ca2+ reached 208. 70%,Mg2+ and K+ were lower; 3) water-soluble salt contents in twig(1 st, 2 nd year) and leaf were higher than those in old branch in Kalidium foliatum, K. caspicum, Halocnemum strobilaceum,and Suaeda physophora, Ca2+ was on the contrary; 4) The seasonal variations of water-soluble salt contents in different plant species had very significant variety.Corelation analysis between water-soluble salt contents show that there were statistical positive correlations(p≤0. 001) between and and Mg2+, and K+,Cl- and Na+, Cl- and total salt contents, and statistical positive correlations(p≤0. 01) between and total salt contents, Ca2+ and total salt contents. The different plant types of concentrating on Na+, Cl-, Ca2+ et al. were divided by classification and ordination of TWINSPAN and DCA using the data of water-soluble salt contents in 13 plant species.

关 键 词：耐盐植物 新疆 呼图壁种牛场 

分 类 号：Q949.408[生物学—植物学]