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The floristic components have character as following: geographic -al elements of species is relatively simple;there are more species of world distributi -on and tropical genera,and there have world blazon predestined relationship and tropical predestined relationship.Composite,standing grain,legumina have absolutely predominance make of the backbone of floristic.Seed plants are mainly made up of herbage plants.

种子植物区系成分具有以下特点:种的地理成分相对简单;表现出明显的亚热带特征,并具有热带向温带过渡的特点;菊科、禾本科、豆科占有绝对优势,构成植物区系的骨干;种子植物主要由草本植物组成,草本植物占绝对优势。

It was revealed that the total cell density increased from early March to May, with a variation of 3 order of magnitudes in cell richness; Amphidinium britannicum and Adenoides eludens were two dominant species in the spring, however Gyrodinium viridescence and Peridinium quinquecorne might be abundant in the early summer; the cell density of dominant species inclined from the high-tide zone to middle- and low-tide zone. Finally, the importance of sonification treatment in precise cell enumeration of nature samples was discussed.

发现初春甲藻数量少,而春末夏初数量显著增多,由春初的0~20个/1 000 g湿砂增加到春末夏初的几千个/10 g湿砂,相差3个数量级以上;Amphidinium britanicum和Adenoides eludens为春季优势种;Gyrodinium viridescense和Peridinium quinquecorne在5月份数量明显增多,与温度升高以及底栖藻类各类群总量增加有密切关系;底栖甲藻的总细胞密度和主要优势种的细胞密度呈现由高潮带向中、低潮带增加的趋势。

The species diversity of Dipentodon sinicus communities in Yushe National Forest Park of Guizhou province was studied based on the quadrate method. The results showed that Rosaceae, Ericaceae, Betulaceae, Fagaceae, Theaceae, Lauraceae, Caprifoliaceae, Cornaceae were the dominant families in D. sinicus communities of Yushe National Forest Park. In the 10 sample plots, there were 8 which were absolutely dominated with D. sinicus population, the importance value came up to 135.69 on average, and it was far higher than the others. For D. sinicus communities, the abundance index (2.847), Simpson index (0.601), Shannon-Wiener index (1.523), probability of inter-specific encounter (0.601) and species evenness (0.569) of the tree layer were lower than those of the shrub layer (5.580, 0.830, 2.377, 0.829, 0.672, respectively) on the whole. It markedly showed a species diversity characteristic of the mixed broadleaved evergreen and deciduous forest in middle subtropics. In the 10 sample plots, the species diversity level of Q1 was the highest, followed by Q3, Q5 and Q6 was the lowest.

摘要运用样方法对贵州省玉舍国家级森林公园稀有保护植物十齿花群落的物种多样性进行了研究,结果表明:玉舍国家级森林公园十齿花群落以蔷薇科、杜鹃花科、壳斗科、桦木科、山茶科、樟科、忍冬科、山茱萸科等为优势科;10个样地中有8个样地以十齿花种群占绝对优势,其平均重要值高达135.69,远远高于其它种群;十齿花群落乔木层物种丰富度为2.847、Simpson指数为0.601、Shannon-Wiener指数为1.523、种间相遇机率为0.601、均匀度指数为0.569,总体上均小于灌木层(分别为:5.580、0.830、2.377、0.829、0.672),表现为较明显的亚热带常绿落叶阔叶混交林的物种多样性特征。10个样地中,Q1的物种多样性程度最高,Q3次之,Q5和Q6最小,多样性程度最低,10个样地的物种多样性排序为Q1>Q3>Q9>Q7>Q2>Q4>Q10>Q8>Q5>Q6。

There were only 94 vascular plant species, belonging to 50 family and 75 genera. The dominant species in the communities were deciduous broadleaf species Liquidambar formosana, Robinia pseudoacacia, Ailanthus altissima, Acer buergerianum, and Celtis sinensis, evergreen broadleaf species Cinnamomum camphora and Elaeocarpus glabripetalus, and Phyllostachys heterocycla. Robinia pseudoacacia+Cinnamomum camphora community had the highest Shannon-Wiener index (1757) and Phyllostachys heterocycla+Acer buergerianum community had the highest Simpson index (0163), but no consistency was observed between the curves of H and D. For vertical structure, most communities had no significant understory stratification.

结果表明:辰山植物区系以泛热带和北温带占优势,具有典型亚热带和温带成分交汇和南北植物分布交错特征;但保育区内种类单一,维管束植物仅有49科69属94种;主要群落是以枫香、刺槐、臭椿、三角枫和朴树等为优势树种的落叶阔叶林,以香樟和秃瓣杜英等为优势树种的常绿阔叶林,以及毛竹林;物种多样性普遍较低,Shannon-Wiener多样性指数最高为刺槐+香樟群落(1.757),Simpson均匀度指数最高值为毛竹+三角枫群落(0.163);多样性指数曲线和均匀度指数曲线不具有一致性的变化趋势;多数群落垂直结构中无明显林下分层现象;演替前期的落叶乔木种群后续个体不足。

The contrast of lesion-to-normal and lesion-to-CSF were higher in FLAIR, was particularly superior in demonstrating lesions in the hypophloeodal or paraventricular area.Small hemorrhagic foci in Sylvian cistern and the cerebral sulci can be easily shown in FLAIR and can?t be done in conventional T2WI.FLAIR was particular of superiority to demonstrate trauma and subarachnoid haemorrhage.

结果 FLAIR共检出病灶1889个,常规T2加权像检出1343个,FLAIR显示病灶的轮廓更为清晰,病灶与正常脑组织的对比度更高,在显示脑皮层下、脑室旁病灶方面更有优势,可显示常规MR T2加权像未能显示的侧裂池及脑表面脑沟的小出血病灶,在诊断颅脑外伤及蛛网膜下腔出血方面具有明显的优势。

The contrast of lesion-to-normal and lesion-to-CSF were higher in FLAIR,which was particularly superior in demonstrating lesions in the hypophloeodal or paraventricular area.Small hemorrhagic foci in Sylvian cistern and the cerebral sulci can be easily shown in FLAIR and can?t be done in conventional T2WI.FLAIR was particular of superiority to demonstrate trauma and subarachnoid haemorrhage.

结果 FLAIR共检出病灶1889个,常规T2加权像检出1343个,FLAIR显示病灶的轮廓更为清晰,病灶与正常脑组织的对比度更高,在显示脑皮层下、脑室旁病灶方面更有优势,可显示常规MR T2加权像未能显示的侧裂池及脑表面脑沟的小出血病灶,在诊断颅脑外伤及蛛网膜下腔出血方面具有明显的优势。

The study of the spectrum of ore deposits in the belt demonstrates that the regional mineralization is temporally characterized by polycycling, inheritance, neoformation and superimposition. The Variscan, late Indosinian to Yanshanian epochs are favorable periods to form large and giant ore deposits.

对区域优势矿种的成矿谱系研究表明,本区成矿在时间演化上表现出明显多旋回性、继承性、新生性和叠加性特征,华力西期与印支末-燕山期是成矿大爆发期,最有利于大型超大矿床形成;在空间分布上,具有明显的侧向和垂向分带性。

Is one of the most important vegetable crops, it shows remarkable heterosis, producing hybrid seed using Cytoplasmic Male Sterile line as female parent is a very important way to utilize the heterosis in radish.

是一种非常重要的蔬菜作物,其具有明显的杂种优势,以细胞质雄性不育系为母本,实行三系配套的制种方式是萝卜杂种优势利用的重要途径。

May 6, 2009 Although LCD has been clearly outselling plasmas TVs in recent times, plasma still maintains a number of advantages over LCD, most notably in contrast ratio.

2009年5月6日:近段时间,尽管LCD电视的销售量已经明显超过了等离子电视,但是等离子技术仍就在某些方面比LCD有优势,其中最明显的就是对比率。

This paper deals with the advantages of agricultural production in Jiujiang from atmosphere, water resources, soil and water areas. Jiujiang has high level and high intensity of agricultural production, great advantages of economic crops and sea fishery, the framework of agricultural distribution has already formed. Cotton, forestry, and fishery have level advantage and product advantage in Jiangxi province.

本文从气候、水资源、土壤、水域,探讨了九江发展农业生产的有利条件;探讨了九江具有农业生产水平和集约化程度较高,经济作物和水产养殖优势明显,农业专业化生产布局框架初步形成的农业发展特点,以及棉、麻、林业和渔业具有的规模和产值比较优势。

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