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The result of stepwise regression analysis showed the amount of rainfall and the relative humidity in the three days before investigation and the number of apothecium in the investigation day were the key factors affecting the number of the spores in the air.

逐步回归分析结果表明调查日前三天内降水量、调查当天的子囊盘数量和调查日前三天的相对湿度是影响田间空中孢子量的最主要因素。

Investigating the ecology environment and present situation of the endemic Cycas plants to Yunnan, especially the population structure and dynamics of C. Hongheensins and C. tanqingii. The results show that C. hongheensis is a critically endangered species because the number its individuals had decreased by 47% from 1992 to 2002 and no flowering and fruiting tree has found. While the population of C. tanqingii in Xiaoheijiang River is in a status of restoration because there are more young individuals and its age structure takes on the relatively stable shape of pyramid.

对云南苏铁属特有植物的生态环境、现状等进行了较为全面的调查,特别是对红河苏铁、潭清苏铁的种群结构和动态进行较为详细的调查,结果表明红河苏铁是一个极度濒危的种,2002年的个体数量比1992年减少了47%,连续3年的调查未发现具繁殖能力的个体;而潭清苏铁种群的年龄结构基本呈金字塔形,属较稳定的结构,且处于恢复期,繁殖更新基本正常。

We only censused 10% of waterfowl habitat in the reserve this time, and the cloudy and fogy weather might affect the bird counting, even though Mr.

由于本次调查时间紧,所选的观测地点较少,调查面积占仅占水鸟栖息地面积的10%,加上天气状况不佳,因此,调查区域实际拥有的水鸟种类和数量肯定要大大超出调查统计数。

Six species of the nine primates are first class protected animals in China, and one species and two subspecies of them are endemic primates in the range. Hylobates concolor is most endanger among the nine species pri mate. The animals exist in Bawanglin Nature Reserve, Hainan,and the population estimated in the end of 1994 is about 20 individuals. The s...

在本区所分布的灵长类动物中有6种是国家一级保护动物,有一种及两个亚种为本区所特有,在这9种灵长类动物中现存数量最少的是黑长臂猿,仅约20只左右,现存数量最多的是猕猴,大约10000只,其它几种的数量都为几千只本文根据80年代以来在华南地区开展的猕猴、叶猴、长臂猿等研究及其它野生动物调查结果,对本区内的灵长类动物分布等综述报道,为制定本地区灵长类动物整体保护策略提供基础资料。

Our results show that there were no significant difference in insect species and abundance between the massion pine forest and the slash pine forest.

通过对6种不同林分结构下的马尾松林和湿地松林内昆虫群落调查与多样性指数分析,表明2种松树内的昆虫种类和数量无显著差异,混交林中的昆虫群落的种类和数量比纯林多,尤其以捕食天敌类群的种类和数量更为明显。

This experiment is studying the quantities of Change development about the Microorganism Vicinity Manpower wet land with MPN,Last we work out the the quantities of Nitrification bacterium、Oppose the nitrification bacterium and Aminate a bacterium in water Unit volume with Biostatistics.we analysis gets conclusion that the quantities of Three kinds microorganisms is the most Vicinity Manpower wet land according to the last data.

本试验采用稀释培养计数法对湿地附近水中微生物的数量变化动态进行计数调查,最后用最大可能数法求出单位体积水样中硝化细菌、反硝化细菌和氨化细菌三类微生物的数量。根据最终数据分析得到的结论是:在人工湿地附近的水中氨化细菌、硝化细菌、反硝化细菌的数量是最多的。

As a result, the DNA segment of predicted size, about 372 bp, appeared in the two kinds of vibrio, but didn't appear in the others. Therefore, a rapid detection kit for V. alginolyticus was developed successfully. It could provide a quick, exact diagnosis and detection method for the diseases in aquatic animals and human beings, and also for the aquatic food security caused by V.alginolyticus. 3. Furthermore, this detection kit was used to investigate the distribution of V.alginolyticus in seawater of living area, healthy aquicultural seawater ...

此外,我们利用此试剂盒对海南地区的生活区附近海水、水产动物养殖健康区海水和发病区海水进行了溶藻弧菌存在情况的调查,结果显示,生活区附近海水的溶藻弧菌数明显低于水产动物养殖健康区海水和发病区海水,后两者中又以发病区海水的溶藻弧菌数量最多;无论是在水产动物养殖健康区还是在水产动物养殖发病区,养殖场的进水处海水中溶藻弧菌的数量也明显低于养殖池水中的数量。

Species richness and Pielou evenness index were used to measure species diversity. Species richness in polluted area was 32-67, while in control area it was 47-82. Pielou evenness index of tree layer was 0.1161-0.8509, while those of shrub layer and herb layer were 0.1763-0.3249 and 0.0443-0.2601, respectively. The results showed that both species richness and Pielou evenness index were influenced by the point source pollution. Species importance values showed significant differences between polluted area and control area. Dominance of different species had changed, and some species even disappeared under the pressure of pollution, indicating a process of species replacement in plant communities. Such species replacement can provide a scientific basis for species selection for restoration of human-damaged ecosystem. The natural regeneration of Quercus variabilis was insensitive to pollution, while Cupressus funebris was effected seriously.

仅在污染区中出现的物种数量远低于仅在对照区中出现的物种数量;(2)可分出4种基本的群落类型:马尾松林、柏木林、栓皮栎林和马尾松+栓皮栎林,各群落特定层次的物种丰富度指数以及Pielou均匀度指数在污染区与对照区之间存在显著差异;(3)污染胁迫下,物种在群落中的生态优势度发生了变化,反映了群落中不同物种相互替代的过程,这种物种的替代可为今后受损生态系统人为恢复过程中物种的筛选提供一定的理论参考;(4)对群落中王要物种更新的调查发现:栓皮栎林对污染不敏感;柏木林污染区与对照区幼苗数量及分布格局均有明显差异,污染条件下群落未来演替受到严重干扰。

Based on a systematic field investigation and laboratory experiments, the structures of arthropod communities and the evalution of dominant predatory enemies in cabbage fields of different seasons were studied. The main results were as follows:1 The structures and their dynamics of arthropod communities in cabbage fields1.1 Species composition and population dynamics of each species of the arthropodcommunities in the cabbage fieldsThe research results showed that the occurrence of Pieris rapae in spring cabbage fields was relatively grave.

本文在田间系统调查和室内试验的基础上,对不同季节甘蓝田节肢动物群落结构及捕食性天敌优势种的评价进行了研究,主要结果如下:1甘蓝田节肢动物群落结构及其动态1.1节肢动物群落物种构成和各种群数量动态研究结果表明,春甘蓝田菜青虫的发生比较严重,菜青虫在调查期间种群数量呈上升趋势,5月初高峰期平均每株甘蓝接近20头;菜蚜与小菜蛾的发生相对较轻,菜蚜在5月中旬有个明显高峰。

objective in order to investigate the variety of the airborne fungi in jingzhou area and study the relationships between airborne fungi and allergic diseases.methods we surveyed the fungi sensitizing of air in jingzhou city from feb.1th,2007 to jau.31th,2008 to quantitatively observe the daily airborne fungi and count under microscope through one year.results the fungi spores were present through all year.more than 20 taxa of airborne fungi have been collected,among which the most common fungi were uredinales,ustilaginales,alternaria,etc.fungi spores were ralated with the season and weather,the most aboudant period in sring and summer.conclusion the airborne fungi were seen one year and were mostly allergenic.many of then had seasonal distribution.

目的:调查荆州市气传真菌的种类、数量变化及飘散规律,了解优势菌群与过敏性疾病的关系,为荆州市空气真菌过敏症的防治提供参考。方法:2007年2月1日至2008年1月31日,在荆州市设曝片点,每日换片,收集全年气传真菌样品,在显微镜下统计,定量获得每天及全年的真菌数量。结果:全年均可见真菌孢子,共收集真菌种类20多种,其中最常见的有链格孢、锈菌、黑粉菌等,其数量和季节、气候有关,以春季、夏季最多,秋季和冬季依次降低。结论:气传真菌全年均有分布并具有较强的致敏性,部分真菌具有明显的季节性变化。

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