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本文将长汀县为研究区域,通过定性的方法,对长汀县土地利用变化进行深入地分析,探寻土地利用变化规律和其变化驱动因素.结合社会经济方面的资料,提取长汀县土地利用变化驱动因子指标,采用定量分析的方法分析土地利用变化驱动力,建立土地利用变化驱动模型,揭示该研究区域土地利用变化与驱动力的关系,进而指导现实决策. 相似文献
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小普林藻(Prymnesium parvum Carter)是一种具有药用价值的金色鞭毛藻,它能形成并产生鱼毒性,溶血性和解痉作用的毒素——普林藻素(Prymnesin)可作溶血剂和解痉药。但是在局部水域,这种鞭毛藻一旦爆发性繁生,会危害渔业生产,是鱼池中的害藻。突起普林藻(P. papillatum Tseng et J.F.Chen)是普林藻属的新种,在外形上和上述小普林藻很相似,而且在山东两个地区都能采到,可见并非是罕见种类,为此引起我们的注意。这里仅对不同地区,分离的两株突起普林藻的适宜生长条件进行研究,将为进一步测定其代谢 相似文献
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接到表达载体上,转化大肠埃希菌BL21 StarTM(DE3),经IPTG诱导表达,表达产物用液相层析法纯化;并用Western Blot(WB)及ELISA法对表达产物的抗原性进行检测。用重组抗原制备登革病毒抗体酶联免疫诊断试剂,用该试剂对广东省登革热监测血清库样本的 相似文献
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Pavlova viridis sp. nov. is described on the basis of light and electron microscope observations. The material was collected from the coast of Haiyang county of Shandong, China. It is characterized by 1) yellowish green to green chloroplast, 2) rudimentary short flagellum 0. 3um long and hook-shaped, 3)long flagellum with small spherical knob-scales, 4) absence of pyrenoid and stigma, and 5) marine habitat. This new species and P . salina seem to be most closely related to each other but their colour, the insertion of their three appendages, the shape of their knob scales, and their cell periplasts are quite different from one another . 相似文献
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Nephroselmis gaoae sp.nov.is described on the basis of light and electron microscope observations ofcultured material originally collected and isolated from seawater of Jiaozhou Bay,Qingdao,China.Theperiplasts on the cell body and flagella are covered by five types of scales,two types on the flagella andthree on the body.Among these,the morphology and the number of spines of large stellate body scalesdiffer remarkably from those of previously described species of Nephroselmis.Apart from these,the unusualfine structure of the eyespot(stigma)is very characteristic.As in the other species of Nephroselmis,theeyespot lies immediately under the two-membraned chloroplast envelope;unlike the others,however,it isnot composed of a number of osmiophilic globules,but consists of about 14 curved rod-shapedosmiophilic bodies arranged loosely and randomly.This feature distinguishes the present new species notonly from the other species of Nephroselmis but also from the other motile algal species,the eyespots struc-ture 相似文献
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等鞭藻的生长及其主要营养成分的研究 总被引:10,自引:2,他引:10
本文记述了从我国山东沿岸海水中分离的一种适高温生长的等鞭藻(Isochrysis galbana Parke)3011,其最适生长温度为25—30℃,用简单的无机盐加少量维生素B_1和B_(12)就能促其快速生长。其粗蛋白、粗脂肪、碳水化合物和灰分的含量分别占干重约46.8%,22.25%,22.54%和8.4%,氨基酸含量为33.37%。 相似文献