查询词典 climate change

Based on previous study, climate marker of clay minerals, composition of the rocks, this study discusses climate and its evolution of the Sichuan Basin and adjacent areas in the Middle Jurassic to the Early Paleogene.

本文在前人地层古生物学研究的基础上，借助粘土矿物气候指标、结合沉积物碎屑成分，着重讨论了中侏罗世-古近纪早期四川盆地及周边地区的气候状况及演变过程。

From the agro-climatic statistics point of view, using the application of stepwise regression, least squares, the moving average method, the correlation coefficient, partial regression coefficient method to determine the critical period of climate sorghum and climate key factor influencing sorghum output.

方法］从农业气候统计学角度，应用逐步回归、最小二乘法、滑动平均法、相关系数、偏回归系数方法，确定高粱气候关键期和影响高粱产量的气候关键因子。

The results of this article are of great value to evaluate phenology and the response of different phenological index to climate changes on climate changes.

该研究对于评价物候及物候不同指标对气候变化的响应有一定的参考价值。

The Heartbeat of the Oligocene Climate System - Marine sediments from 34 to 21 million years ago reveal an intricate response to orbital forcing on the part of Earth's climate, carbon cycle, and ice sheets.Authors: Heiko Plike, Richard D.

渐心跳的气候系统--从1934年至1921年海洋沉积物万多年前就揭示了错综复杂的轨道，迫使一部分地球气候、碳循环、冰sheets.authors：plike时Heiko理查德丁诺里斯的Jens澳海尔勒保罗威尔逊甲、海伦coxall悦、加罗林老义形式尼古拉j。

The result of factor analysis can provide the changes of relative precipitation and temperature variations. In trace elements, Cu, As, Zn, Pb and Ni were apparently enrichmented in soil layers and are sensitive to climatic changes. Carbon isotope is more sensitive to climatic changes than that of oxygen isotope in loess stratigraphy. The heavy mineral are varified in the loess stratigraphy, but their content differences between loess and palaeosol is little. Though the palynologic analyses results reveal that pollens and spores are fewer in the loess stratigraphy, they differ greatly in loess layer and palaeosol layer not only in species but also in types, i. e., the pollens and spores indicating warm and moist climate, such as Lles, Podocarpus, Polopydium, Pteris grerilliana Wall, Pterocarya and Juglans appear in palaeosol layers, while those indicating cold and dry climate such as Ephedra, Artemisia, Chinopodiaceae, Picea and Abies exist mainly in loess layers. The pollen content of broad-leaved tree mainly consisting of Pterocarya is up to 60% in palaeosol 〓, while the content of Ephedra is more than 50% in 〓 loess layer, showing that the environment differed greatly when 〓 and 〓 were formed.

当然，常量元素氧化物的组合因子分析结果可提供相对降水与相对温度在剖面的变化，因而来反映气候状况更为理想；微量元素中Cu、As、Zn、Pb与Ni在成土过程中富集明显，亦较好地反映了气候变化；稳定同位素中的碳同位素比氧同位素更能敏感记录气候的变化；研究区黄土地层中重矿物种类较多，但黄土层与古土壤层中含量差异不大；孢粉分析结果揭示，尽管研究区黄土层中孢粉总量相对较为贫乏，但黄土层与古土壤层中孢粉种属相差较大：在古土壤层内出现了指示相对暖湿环境的冬青属、罗汉松属、水龙骨属、林下凤尾蕨、枫杨、胡桃等植物孢粉，而黄土层中麻黄、藜科、蒿属及冷杉、云杉含量较高。

Based on the above two models, the meteorological data of Baseline (1961~ 1990), A2 (2071—2079), and B2 (2071~2090) exported directly by PRECIS were used in crop model to output yield, and the number of growth date of 11 maize stations in the future climate changed. At last, the affection of future climate changed for maize production was evaluated.

在此基础上，用PRECIS的模拟结果直接为CERES-Maize模型提供Baseline 30年(1961～1990年)、A2情景9年(2071～2079年)、B2情景20年(2071～2090年)的气候变化情景，计算现在和未来气候条件下的全国11个玉米站点的产量和生育期天数，评估未来气候变化对中国玉米生产的影响。

But there was exception in some regions with relative wet climate, such as southern Europe, southwest America. The wetter climate in these regions were contributed to strong cold high pressure systems over the ice sheets which forced westerlies shift southward and brought more precipitation and caused high lake level in these regions.

但也有一些地区例外，如欧洲南部和美国西南部由于受到大陆冰流反气旋控制，造成的西风带南迁而引起降水变化，湖泊反映出具有寒冷但潮湿的大湖或高湖面。

In a word,it is more credible to use Mg/Ca ratio as climate psychrometer which has less external influence and it is questionable to use Sr/Ca and Ba/Ca ratios as one climate proxy because they are sensitive to many factors just like vegetation,soil microbe activity.

总体来看，石笋中Mg/Ca与Ba/Ca值的相关性很弱，可以认为分别受到降水和土壤微生物作用的影响，而Sr/Ca比值却可以与两者同时保持一定的正相关关系，表明其至少受到以上两种因素共同制约。

The impact of rain gauge measurements is to increase the precipitation estimated from satellite data. The main difference is in Taiwan and the southeastern China where satellite retrieval underestimates the precipitation rate during boreal spring and summer. For the different precipitation climate analyses, the Legates- Willmot rainfall climate analysis produces the largest annual mean regional rainfall.

微波放射的雨量反演比微波散射法所估计的雨量略高，增加了测站雨量计分析的综合估计，使得区域平均年降雨量比只用卫星资料的估计大，而主要的差异是源自於春、夏季以及台湾与大陆东南沿海地区，显示卫星资料低估区域的锋面降雨。

Results demonstrate that climate fluctuations recorded by the two boreholes correspond to the marine oxygen isotope stages. Thick layer of coarser grained fluvial deposits and the third layer of "hard mud" were deposited in the study area during MIS 6, reflecting a cold climate. The sediments became fine-grained and indicate a coastal marsh depositional environment during MIS 5. The second layer of "hard mud" was deposited during MIS 4. Fine-grained coastal marsh deposits dominated in the study area during early MIS 3, while lagoon-beach ridges prevailed during middle and late MIS 3, forming a layer of silt and fine sand in the coastal plain. The MIS 2 strata are composed of a typical sedimentary sequence with coarse grain in the lower section and fine grain in the upper section, i. e. yellowish grey or brownish yellow silt and brownish yellow or dark green "hard mud", respectively.

研究结果显示，两孔记录的古气候波动可与深海氧同位素曲线进行对比：对应于深海氧同位素曲线第6阶段(MIS6)，堆积厚层的河道相粗颗粒沉积及第3硬土层，反映当时气候寒冷；第5阶段(MIS5)，为滨海湖沼沉积，沉积物的颗粒显著变细；第4阶段(MIS4)，本区形成第2硬土层；第3阶段(MIS3)的早期，本区也发育滨海湖沼沉积，中晚期则形成潟湖—砂坝体系，在滨海平原区普遍发育粉、细砂层；第2阶段(MIS2)，地层由下粗上细的沉积序列构成，下部为黄灰、棕黄色粉砂，上部则为棕黄色或暗绿色硬粘土。

Objective To investigate the relationship between ovum fertilization rate and sperm morphology, acrosome reaction in IVF and to explore the influence of parameters of sperm on fertilization rate.

目的 研究体外受精(in vitro fertilization，IVF)中精子形态、顶体反应与卵子受精率之间的关系，分析精子各参数在IVF受精率方面的参考意义。

A: I hear Mr. White wants to run for the Presidency!

我听说怀特先生要参加总统竞选！