河流

The competing role of surface uplift and climatic change on terrace formation remains controversy in geomorphic community.

气候变化和地面上升在河流阶地形成过程中所起的作用一直是河流地貌学界争论的焦点。

The hydrological, geomorphological and sedimentological characteristics of some anastomosing river s have been revealed.

网状河流是受到人们关注的新型冲积河流，其水文特征、地貌特征和沉积特征已经不同程度地被揭示。

EPA officials working on the Housatonic cleanup have agreed that the next few years will determine the river's long-term environmental recovery .

着手清理H河流的EPA的官员已经同意在今后几年将作出这条河流的长期环境恢复工程解决方案。

EPA officials working on the whole Housatonic cleanup has agreed that the next two years will determine the river's long term environmental recovery.

着手清理H河流的EPA的官员已经同意在今后几年将作出这条河流的长期环境恢复工程解决方案。

River hydrochemistry change may reflect human influence on water environment in a certain degree,and the grasp of river hydrochemistry characteristic and distribution rule is helpful to reasonable use and protect water resources.

河流水化学的变化可以从一定程度上反映出人类活动对水环境的影响，掌握河流水化学特征及其分布规律有助于合理利用和保护宝贵的水资源。

Therefore,tapping potencial of remaining oil to improving oil recovery,the recognition of reservoir intraformational heterogeneity in channel sandbodies is proposed and the main targets of reservoir IOR in channel sandbodies of mature oilfields are pointed out as follows:①shutting off strongly-waterflooded intervals to control ineffective circulation of injected water;②strengthening water washing in medium-waterflooded intervals in order to achieve the aimed waterflood efficiency and even to exceed it;③enhancing injection-production consistency and injector-producer ratio of non-waterflooded or weakly-waterflooded intervals for the propose of realizing effective displacement and imporving conforma nce.

根据我国东部主力油田储层绝大多数都属于河道砂体，注水开发进入高含水阶段后，层内剩余油超过层间剩余油，层内矛盾上升为主要矛盾这一特点，从挖掘层内剩余油潜力出发，提出要重新认识河流砂体储层层内非均质性，并指出高含水期河流砂体储层改善采油目标主要有：①封堵强水洗段，控制注入水无效循环；②加大中水洗段注水冲洗强度，达到目标水驱效率，并有可能超过目标效率；③提高未、弱水洗段的注采对应程度和注采井数比，达到有效驱替，提高波及程度。

Base of it, the relationship between ecosystem and factors mentioned above is discussed and the frame for downstream riverine ecosystem model is presented.

这是河流动力学与河流生态学相融合的初步尝试。

The paper sees Horton code as a primary characteristic value and generalizing condition of the river network, and selects, simplifies and generalizes river based on scale of before and after generalization,, The main contents of paper include:(1)Reviews generalization concept, arithmetic operators, methods, influence factor and frame of map generalization and design, analyze core theory of feature —oriented map generalization, discuss the main context and applicable method of river feature generalization(2) Summarizes natural form and spatial configuration characteristic of the river network, and describe the river network using digraph Paper mostly researches tree —like river, identifies the direction of river based on the angle of the main and secondary reach, and identifies the main river based on most length and predominant continuation of the flow direction along the major channel , then receives the grade of river by recursion and structuralize river network, builds hiberarchy rank system of river based on Horton coding(3)Designs the model of river network based on Horton code, and organizes the data of node, branch and river.

本论文把Horton编码作为水系网的一个主要特征值并以此作为综合条件，并根据综合前后的比例尺对水系网进行选取、化简和概括。论文的主要工作包括：(1)总结地图综合的概念、算子分解、实现方法、主要影响因素和总体设计框架，分析面向地理特征的制图综合的核心理论支撑，在此基础上讨论水系专题要素综合的主要内容和综合适用的方法。(2)总结水系网的自然形态和空间结构特征，用图论对水系网进行描述。以树状水系作为主要研究对象，依据树状水系的主支流交汇关系确定水系流向，依据水系中主流的长度最长和主流保持原有的流向趋势确定主流，按此递归得到河流的不同级别，对基于河段组织的水系网结构化，自动建立水系的Horton编码。(3)设计基于Horton码的水系网模型，对结点、河段、河流和河系的数据进行有效的组织。

River is a bridge between terrene and ocean. It is very important to study the flux of river active material flowing into the sea for current ecological geochemical evaluation.

河流是陆地与海洋相互作用的重要纽带，查明陆地河流活性物质入海通量是当前生态地球化学评价的一项重要任务。

The Tiber is the third-longest river in Italy, rising in the Apenine mountains in Emilia-Romagna and flowing 406 kilometres (252 mi) through Umbria and Lazio to the Tyrrhenian Sea ...

阿諾河（意大利语： Arno ），或译为阿爾諾河，是意大利托斯卡尼地區的河流，除了台伯河以外，阿諾河是義大利中部最重要的河流之一。佛罗伦斯、恩波利与比萨也位在阿諾河畔。

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。