降水量

Using the adjoint operator of PW, nine sites'PWs are successfully assimilated into the initial condition and altered the initial temperature, water vapor and wind field. The change varies with variable fields and pressure levels.

本文利用开发的用于同化可降水量和天顶延迟的模式，成功地将9个站点的大气可降水量的分布及变化信息同化到初始场中，从而使初始场在湿度场、温度场和风场方面较同化前得到改变，这种改变在不同变量场、各个层次上变化的大小和形势是不相同的。

The conclusion through correlation analysis on annual ring grow quantity and precipitation and temperature is that the precipitation in local area is the main factor which affect forest growth quantity.

从年轮生长量与降水量温度相关分析得出：该地区降水量是影响森林生长量的主导因子。

The result of stepwise regression analysis showed the RH and the precipitation in the three days before investigation and in the ten days before the investigation were the key factors affecting the apothecium number.

逐步回归分析结果表明调查日前三天的相对湿度和降水量，调查日前十天的相对湿度和降水量是影响田间子囊盘数量的最主要因素。

The research results show:(1) we combine time series method with the dispersed Markov Chains theory of stochastic process, and present a Markov Model based the time series analysis for predicting the precipitation for groundwater resources evaluation. Results show that the time series-Markov Model is efficient, and it has higher accuracy than that of the single model of time series;(2) started from the systematic point of view, we analyze the metabolic process of groundwater, establish the ultimate metabolic equation of groundwater for protecting the water resources, and discuss the value of reducing evaporation for making full use of the water resources;(3) Through a theoretical analysis of the results of the experiments, we draw a conclusion: the critical depth on evaporation of groundwater is in step with the height of the maximal capillary rise of media.

通过理论分析与实验研究，得出主要结论如下：(1)论文将传统的时间序列方法与随机过程马尔可夫预报模型相结合，以预报大气降水量，并用于地下水资源评价，创造性的提出了地下水资源评价中降水量的时序——马尔可夫预报模型；(2)论文从系统的观念出发，分析了地球水循环中地下水代谢过程，建立了旨在保护水资源的地下水极限代谢条件方程，并进一步阐明了减少蒸发量和增加补给量在水资源保护中的重要作用；(3)论文通过实验研究和理论分析，论证了潜水蒸发存在极限埋藏深度，得出了潜水蒸发极限埋深与介质最大毛管水上升高度一致的重要结论。

The mass loss patterns of four type litters fitted exponential model, and the decomposition rate could be well predicted by their lignin/N ratio.

结果表明：与对照相比，降水量减少条件下，蒙古栎叶凋落物的初始N、P、K浓度显著升高，初始木质素浓度显著降低，凋落物分解速率大，N、P、K矿化率高，N和P固持时间缩短；降水量增加情况下，其凋落物初始N浓度显著降低、木质素浓度显著升高，N、P、K矿化率低，N和P固持时间延长。4种类型叶片凋落物的质量损失过程均符合指数降解模型，分解速率可以由凋落物木质素／N来预测。

The ratio of EP amount to total precipitation amount is generally increasing in most areas of China,suggesting that the precipitation event has an obvious trend of extremeness.

极端降水量与降水总量的比值表现为全国普遍增加的趋势，说明我国四季降水量均有向极端化方向发展的趋势。

This was lower than the national average annual rainfall of 838 mm (33 inches),[19] and recent droughts have led to hosepipe bans by Mid Kent Water.

降水量低于全国平均年降水量的838毫米(33英寸)，[19] 针对近期大旱，中肯特郡水利部门发布了不准使用喷水管的禁令。

Based on DEM data and by using GIDS method as the interpolation formula, it is derived that there is a latitudinal distribution of annual precipitation, and the precipitation is closely related to landforms.

空间分析是以DEM数据为基础，采用梯度距离平方反比法作为差值公式，得出整个流域的年降水量呈纬向分布特征，降水量的大小与地形分布有着十分密切的关系。

The results showed that in the four rehabilitated forests, the previous month's soil moisture content had stronger effects on the current month's soil moisture content in 0-40 cm and 20-40 cm layers, but had lesser effects on that in 0-10 cm layer. The soil moisture content in 20-40 cm layer was mainly affected by current month's precipitation, while that in 0-10 cm layer was mainly affected by current month's evaporation. The correlation coefficient between current month's precipitation and soil moisture content was the largest in pure Liquidambar formosana plantation, and the auto-interrelation coefficient of soil moisture content was larger in mixed forests than in pure L. formosana plantation.

结果表明：研究区各重建森林前一个月的土壤含水量对当月整个土壤剖面(0~40 cm)平均土壤含水量和当月20~40 cm土层土壤含水量具有较强影响，对当月0~10 cm土层土壤含水量的影响较小；研究区各重建森林20~40 cm土层土壤含水量主要受当月降水量的影响，0~10 cm土层土壤含水量主要受当月蒸发量的影响；在4种森林重建模式中，枫香纯林当月降水量与当月土壤含水量的相关系数最大，混交林模式土壤含水量的自相关系数大于纯林模式。

The result of correlation analysis is as follows, the series of Sitobion avenae of emergence size and period correlate with temperature, precipitation, a sum of heat and a sum of rain. Weather state factor of temperature-precipitation can be used to forecased the population of Sitobion avenae. A problem of risk probability can be settled by the grade series of calculation and stochastic simulation, order transfer of Markov chain, so table of risk value of cantemperature, precipitation and Sitobion avenae.are list This is a new approach about PRA in plant protection.

相关分析的结果是麦长管蚜发生量和发生期等级序列与温度、降水量等级序列及积温、积雨值密切相关，通过温度-降水量天气相关状态因子可以预测有害生物的发生状况；通过随机模拟风险因子各个序列和马尔柯夫链状态转移概率的计算，得出了有害生物风险分析和预测过程中较难估算的风险概率，并计算出了北京市温度、降水量和麦长管蚜不同等级的发生风险值表，这在植保有害生物风险分析的方法上是一种新的探索。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。