取样分布

The project will make full use of Cretaceous marine, terrestrial strata and paleontological records.

项目将充分利用中国大陆发育完好的白垩纪海相、陆相地层及古生物记录，通过松辽盆地白垩系科学钻探全岩芯取样和多学科综合研究的途径，着眼于厘定反映地质事件和气候变化的层位及标志和时间格架，解决高分辨率海、陆相沉积事件的精确对比，分析地层记录中气候标志和古生物类群的地理分布，集中研究陆地和海洋环境对同一事件的响应机制，重溯白垩纪地球表层系统重大地质事件过程及成因，探究陆相烃源岩大规模形成、陆地生物群更替与温室气候变化和碳循环之间的正/负反馈关系和机制等科学问题，为预测全球长时间尺度上的气候变化趋势提供科学依据。

And such methods V/m ratio t-test, negative binomial parameter, index of dispersion, Cassie index, index of clumping, index of mean crowing and index of patchiness are employed to analyse various dominant populations of Heptacodium miconioides community in the Tiantai Mountain in Zhejiang province and distributive patterns of Heptacodium miconioides community in different quadrats, and this paper also examines the intensity of Heptacodium miconioides population in different quadrats by means of stand classes.

摘 要 以浙江省天台山七子花群落为研究对象，采用相邻格子样方法取样数据，应用方差／均值比的t检验法、负二项参数、扩散型指数、Cassie指标、丛生指标、平均拥挤指数和聚块性指数等方法，分析了七子花群落各优势种群以及七子花种群在各样地中的分布格局，并分立木级对七子花种群在不同样地内的集群强度进行了测定。

A fast simulation method for sampled fiber Bragg gratings with periodic index distribution .

折射率周期分布取样光纤Bragg光栅的快速分析方法。

This study was conducted in Taiyuan sewage irrigation area from 1997 to 2000.The research process included field investigation, sampling, lab test, model experiment and data analysis by geo-statistics method. The source, affecting factors, content condition, transference regularity, spatial distribution of heavy metal in sewage irrigation area were studied. The results showed that mercury, cadmium and lead contents of soil were higher than soil background value.

本文以在中国北方具有代表性的太原污水灌溉区为研究对象，污灌区位于山西省中部的太原盆地北端，总面积2.7万公顷，在研究区共布土样点49个，粮食作物样33个，水样点26个，大气样点6个，通过实地调查取样监测和室内模拟试验，采用地统计学和多元统计等方法，系统研究了污灌区土壤-作物系统中重金属Hg、Cd、Pb的来源、含量状况、累积影响因素、空间分布特征、迁移转化规律、重金属环境容量的区域分异与应用等内容。

Using uniform 25-point sampling method, soil water distribution of subsurface drip irrigation in cotton fields was evaluated.

采用均匀25点取样，对大田棉花地下滴灌的土壤水分分布状况进行了评价。

Glass eels use the behavioral pattern of semidiurnal vertical migration called selective tidal stream transport, and a greater number of glass eels were caught during flood tide than that during ebb tide.

长江口是日本鳗鲡鳗苗的主要产区，利用2007年1-5月在长江口的长兴岛、横沙和杭州湾小洋山4个取样点得到的日本鳗鲡鳗苗渔获量数据，初步研究了鳗苗的补充时间分布以及补充量与潮汐、月相等环境因素之间的关系。

The herbaceous Smilax species form a monophyletic clade, and it is also the case for the South American species. Their positions in the cladogram are intriguing and may help to shed light on evolutionary and biogeographic history of the family.

Nemexia的单系得到很好的支持(93％)；(4)分布于南美洲巴西的种类聚为一个单系类群，表明它们可能有共同的起源，但由于取样局限，南美洲种类的系统地位有待进一步研究。

The spatial pattern and sampling methods of verticillium wilt on eggplant were studied.

对茄子黄萎病在田间的空间分布及取样方法进行了研究，并探讨了田间土壤带菌量的准确测定方法。

It is very peculiar that the region of arsenism and the number of arsenism people caused by burning high arsenic coals.

因此根据目前国内外对煤中砷的研究进展，在全国范围内有计划取样，研究中国煤中砷的含量、分布及其影响因素；探讨我国煤砷的赋存状态；选择大气中出现砷异常的西南地区，研究煤中砷脱洗机理；在室内模拟燃烧的基础上，研究燃煤砷排放机制。

It indicated that, brecciated granodiorite was foemed mainly by chemical attack, brecciated ore and brecciated marble were hydraulic breccias which were formed mainly by mechanical process, and the energy when brecciated ore was formed is higher than the energy when brecciated marble was formed.During the research of tectono-geochemistry in the south part of Fenghuangshan copper deposit, it is discovered that the fractal character of Cu is multifractality, and different from each other according to the geological bodies.

凤凰山铜矿床南区构造地球化学取样分析中的Cu元素含量具有多重分形的特点，且不同的地质体中其分形特征不同，结合Cu元素在不同地质体中的分布特点，说明本区不同地质体所经历的成矿作用不同，其中以石英二长闪长岩所经历的成矿作用强度较大，较有利于成矿元素的富集。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。