- 陶小凡
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河流系统 河流系统是由两条以上大小不等的支流以不同形式汇入主流,所构成的集合体。包含3个亚系统:①流域分水地区或产沙地区,即河流来水来沙区;②干流中下游输水输沙带,对平衡的河道来说,输入的泥沙等于输出的泥沙;③河口三角洲沉积作用区。每个亚系统都是一个开放系统,在系统中,不仅系统与环境气候、地壳运动、基准面等之间,而且系统内部各要素间均不断进行着物质、能量和信息交换。通常第一亚系统为流域科学家、地貌学家和水文学家所关心的对象,在这里环境中的物质、能量以负熵流的形式进入系统;第二亚系统为水力与河道整治工程师和地貌学家共同关心的对象,同时泛滥平原上的古河道及河谷淤积物又为地层学家和沉积学家所关注;第三亚系统关系到地质学和海洋工程,而冲积扇、冲积平原、三角洲的形态、内部结构和地层特点是地质学和地貌学共同关心的课题,在这里物质能量以流的形式输出到环境中去。三个亚系统的关系是复杂的过程响应关系。受地壳运动、地质条件、地形、气候、植被等独立变量控制的地表侵蚀动力和地表形态决定了第一亚系统的产流及其过程,产沙量及其性质,这些又决定了第二亚系统中的河道特性及第三亚系统的沉积物性质。
River systems river system is more than two tributaries of varying sizes in different forms into the mainstream, the composition of aggregates. Contains three sub-systems: ① basin or watershed sediment yield, namely, river water and sand area; ② water transport with the main stream of the middle and lower reaches of the river for the balance, type of sediment equal to the output of the sediment ; ③ sedimentation delta area. Each sub-system is an open system, in the system, not only system and the environmental climate, crustal movement, between the base level, and between the elements of the system are constantly engaged in a material, energy and information exchange. Usually the first sub-system for the watershed scientists, experts and hydrologists topography of the object of concern, where the physical environment, energy in the form of negative entropy flow into the system; the second sub-system for the hydraulic engineer with the rivers and landscape Jurists of the object of common concern, at the same time the ancient flood plain and river valley sludge for formation of Jurists and the concerns of sedimentologists; the third sub-systems related to geology and ocean engineering, and the alluvial fan, alluvial plain, delta morphology, internal structure and stratigraphy is characterized by geology and geomorphology of the issues of common concern, where the material flow in the form of energy output into the environment. The relationship between the three sub-systems is a complex process in response to the relationship. By the crustal movement, geological conditions, topography, climate, vegetation, such as an independent variable to control dynamic surface erosion and surface determines the shape of the first sub-system and the process of runoff, sediment yield and its properties, which also decided the second sub - characteristics of river systems and sediment properties Sanya system.
- 小菜G
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River system is more than two tributaries of varying sizes in different forms into the mainstream, the composition of aggregates. Contains three sub-systems: ① basin or watershed sediment yield, namely, river water and sand area; ② water transport with the main stream of the middle and lower reaches of the river for the balance, type of sediment equal to the output of the sediment ; ③ sedimentation delta area. Each sub-system is an open system, in the system, not only system and the environmental climate, crustal movement, between the base level, and between the elements of the system are constantly engaged in a material, energy and information exchange. Usually the first sub-system for the watershed scientists, experts and hydrologists topography of the object of concern, where the physical environment, energy in the form of negative entropy flow into the system; the second sub-system for the hydraulic engineer with the rivers and landscape Jurists of the object of common concern, at the same time the ancient flood plain and river valley sludge for formation of Jurists and the concerns of sedimentologists; the third sub-systems related to geology and ocean engineering, and the alluvial fan, alluvial plain, delta morphology, internal structure and stratigraphy is characterized by geology and geomorphology of the issues of common concern, where the material flow in the form of energy output into the environment. The relationship between the three sub-systems is a complex process in response to the relationship. By the crustal movement, geological conditions, topography, climate, vegetation, such as an independent variable to control dynamic surface erosion and surface determines the shape of the first sub-system and the process of runoff, sediment yield and its properties, which also decided the second sub - characteristics of river systems and sediment properties Sanya system.
- 可可
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The river system is by two above size different branches to converge the mainstream by the different form, constitutes aggregate. Contains 3 Asian systems:①The basin water diversion area or produces the sand area, namely the rivers come the water to come the desert region;②Middle and lower reaches the main current the water distribution loses the sand belt, to the balanced river course, the input silt is equal to the output the silt;③River mouth delta deposit sphere of action. Each Asian system is an open system, in system, not only system and environment climate, diastrophism, reduced plane between and so on, moreover system interior during various essential factors unceasingly is carrying on the material, the energy and the exchange of information. Usually the first Asian system the object which for the basin scientist, the landform scientist and the hydrology scientist cared, in here environment"s material, the energy enters the system by negative entropy flow"s form; The second Asian system the object which cared together for the water power and river training engineer and the landform scientist, simultaneously on floodplain"s fossil stream channel and the river valley siltation pay attention for the stratum scientist and the deposition scientist; The Sanya system relates the geology and the oceanographic engineering, but the alluvial fan, the wash plain, the delta shape, the internal structure and the stratum characteristic are the topics which the geology and the geomorphology cared together, in here matter energy outputs in the environment by the class form. Three Asian system"s relations are the complex process response relation. The diastrophism, the geological condition, the terrain, the climate, the vegetation and so on independent variable control"s restrial erosion power and the surface feature had decided the first Asian system produces the class and the process, produces Sha Liang and the nature, these have decided in the second Asian system"s river course characteristic and the Sanya system"s deposition physical property.
我的不是吗????
- 北境漫步
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River system
River system is composed of two above, ranging from tributaryof in various forms to import the mainstream, the collection.contains three system: fenshui cyclophos phamide River basin districts or areas, namely, the relationshep river sediment in the under-Middle District; II river water conveyance sediment transport belt, on balance of the River, the input of sediment is equal to the output of sediment deposition; and aim at hekou Delta region.each system is an open system, in the system, not only climate system and environment, qiinghai, Datum, and so on, and responseon between the various factors have been there is a matter, energy and information exchange.usually the first Asia - Pacific basin system for scientists, geomorphy combinatorists and gidrolog of concern to the object, here in the context of material and energy to negentropy stream into the system; and second hydraulic system for Asia and the River engineer and geomorphy combinatorists of common concern at the same object, flood plain on the palaeochannel and sulcatus the stratigraghy deposits for home and sedimentologic family concern; the system in relation to Sanya geologisches and oceaneering, choushui, amorphological alluvial plain, Delta, the internal structure and formation is characterized by geologisches and geomorfologiya topics of common interests, where the material energy as output to the environment.three of the relationship between the sub - system is a complex process in response to the relationship.affected by qiinghai, geological conditions, topography, climate, vegetation such as independent variables control surface erosion motivity and groundsurface shape determines the first Asia - Pacific system runoff and process, sediment yield and its nature, these also decided to the second Asia - Pacific characteristics of the river system and the nature of sediment from Sanya system.