气象

Ammonia volatilization in relation to N application rate and climate factors was studies through field experiment in red soil under the crop rotation of Smooth Crabgrass in spring and Winter Radish in autumn Results indicate that ammonia volatilization in Treatments N90, N160 and N230 in spring dragged on for 10~17 days, and peaked at the 6th~8th day after urea application, reaching N0.11, 0.57 and 1.84kg hm^(-2)d^(-1), respectively, and the total amount of N loss through ammonia volatilization was N0.67~5.16kg hm^(-2) accounting for 0.74%~2.24% of the total N applied.

通过红壤旱地种植牧草马唐和蔬菜冬萝卜轮作试验，研究了在春秋二季红壤旱地氨挥发对不同施氮量和气象因子的响应。结果表明，红壤旱地春季牧草实验，氮肥处理N90、M60和N230，氨挥发持续10~17d，在施肥后6~8d达到峰值，峰值分别为N0.11、0.57和l.84kg hm^(-2)d^(-1)。

According to the weather forecast , there will be rain in parts of the area today.

据气象预报，今天局部地区有雨。

The results showed the modelling es-tablished and its condition for determination and solving could be used as predic-tion and simulation of the flucturation of soil water in the field under subdrainagecondition,the soil water status in the winter wheat and barley field could be ob-tained at different falling rates of underground water table under any meterologi-cal boundary condition.

结果表明，所建立的模型和定解条件能较好地拟合排降条件下田间土壤水分的变化，可以求获一定外界气象条件下，不同地下水降落速度时，麦田水分变化状况。

The results show:(1) The meteorological environment over the Beijing area is complex, which is controlled mainly by the combined influence of the mountain valley wind circulation cycling day and night, the urban heat island circulation, and large scale system.

数值模拟结果表明：(1 )北京地区的气象环境很复杂，其主要特点是受昼夜循环的山谷风气流、城市热岛环流以及大尺度系统共同影响。

The approaching Chinese New Year of 2009 is a good occasion to get together and thus Ox Warehouse is inviting all the 2003 Ox Exhibition participating artists, as well as new creative people, to fill in different colors at this special occasion and join this re-exhibition, looking at creation in a more free and relaxing way.

踏入2009年的新春，我们共聚一堂，牛房希望再次邀约当年曾参展的艺术家及一些创作新人类，为新春开年注入不同的色彩，也让创作这回事变得自在、轻松起来，对进入第六个年头的牛房仓库，回望也好，期望也好，希冀透过不同的展示方式保持独特的艺术气象。

Promoting-disease-index models were established to determine and the suitable degree and occurrence grades of meteorological conditions on wheat scab.

结果经过42年资料的拟合、验证，模型能够准确判别出气象等级为4级的年份。

The results showed that the temperature had the tendency of increasing in these regions; the rainfall, raining days and relative humidity had no significant changes; the index of K was over 0 in most areas, that is, the possibility of wheat scab occurrence will be increased year by year.

结果表明，冀京津区域气温有增加趋势，有利于小麦赤霉病的发生流行；冀京津区域降雨量、降雨日数、相对湿度等气象因子未表现出明显的变化；大部分地区K指数大于0，即春季小麦赤霉病发生流行的可能性逐年加大。

Finally, according to the critical overpressure values and concentration values, vapor cloud explosion model, Gaussian model and atmospheric dispersion model of the special weather conditions, accident consequence is analyzed and the qualitative and quantitative comparisons on consequences of these two kinds of accidents of artificial gas are made.

最后根据各级临界超压值选用蒸气云爆炸模型，根据各级临界浓度值选用高斯模型及其发展出的特殊气象条件下的大气扩散模式进行事故后果分析，并对人工燃气的这两种事故的结果加以定性、定量比较。

We analyzed and discussed the characteristics of cycle of carbon and water,and after having obtained important physiological parameters based on field experiment,a process-based, multilayer two-leaf model which calculates energy and material cycle separately for sunlit and shaded leaves was developed,then characteristic of CO_2 fluxes above the canopy was simulated.The main results are as follows:1.Characteristics of carbon and water cycle in the relationship of leaf photosynthesis -stomatal conductance-transpiration.

本研究以冬小麦为研究对象，利用LI-6400R光合—蒸腾测量系统、LI-6400-09土壤呼吸室和禹城生态试验站涡度相关系统等高精度仪器设备，对2007年和2008年小麦拔节至乳熟期间涉及碳、水循环过程的叶片光合—蒸腾作用、土壤呼吸作用及相关农田气象要素和植被特征进行了野外试验测定和分析，在试验观测基础上提取了重要生理参数，建立了基于过程的农田与大气间物质输送和能量交换的多层—双叶模型，并对2008年试验期间冠层上方碳通量特征进行了模拟，试验分析和模拟的主要结论如下：1。

The visualization of two-dimensioned railway information could be implemented by the component of MapX of MAPINFO and the relative component of SuperMap.

可将铁路沿线的管网信息、设备信息、气象信息、突发事件的图像信息通过无线网络进行共享、发布和远程监控管理。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。