Von Thünen Model · 冯·杜能模型
| English | 中文 | Pinyin · 拼音 |
|---|---|---|
| von Thünen model/vɒn ˈθuːnən ˈmɒdl/ | 冯·杜能模型 | féng · dù néng mó xíng |
Rings around a market
- The von Thünen model 冯·杜能模型 (1826) explains what farmers grow where.
- It is based on transport cost and distance to market.
- Land use forms concentric rings around a central market.
围绕市场的环带
- 冯·杜能模型(von Thünen model,1826)解释农民在哪里种什么。
- 它基于运输成本和到市场的距离。
- 土地利用围绕中心市场形成同心圆环带。
The von Thünen model explains agricultural land use mainly using... · 冯·杜能模型主要利用...解释农业土地利用
It is built on transport cost and distance to market. · 它建立在运输成本和距市场距离的基础上。
The four rings
- Ring 1: market gardening and dairying (perishable, must be near market).
- Ring 2: forest (heavy fuel/timber, costly to move in his day).
- Ring 3: field crops and grain; Ring 4: ranching (extensive, low value, far out).
四个环带
- 第 1 环:菜园和乳业(易腐,必须靠近市场)。
- 第 2 环:森林(沉重的燃料/木材,在他那个时代运输昂贵)。
- 第 3 环:大田作物和谷物;第 4 环:放牧(粗放、低价值、位于远处)。
Which von Thünen ring? · 这是冯·杜能的第几圈层？
Sort each land use by its ring, from nearest to farthest. · 按圈层从近到远对土地利用进行排序。
Perishable products like dairy locate in the ring nearest the market. · 易腐产品（如乳制品）位于距市场最近的圈层。
Perishable, high-value goods crowd Ring 1, nearest the market. · 易腐、高值商品占据Ring 1，即距市场最近的一圈。
In the von Thünen model, land use forms ____ rings around a central market. · 在冯·杜能模型中，土地利用形成围绕中心市场的____圈层。
The model predicts concentric rings of land use. · 该模型预测土地利用呈同心圆分布。
Match each ring to its land use. · 将每个圈层与其土地利用相匹配。
Ring 1 = perishable near; Ring 3 = grain; Ring 4 = ranching far. · 环 1 = 易腐品靠近；环 3 = 谷物；环 4 = 牧场远离。
Assumptions and reality
- The model assumes a flat, uniform plain with one market and equal transport.
- Real regions bend the rings — roads, rivers, terrain, and refrigeration change things.
- But the core idea, that transport cost shapes land use, still holds.
假设与现实
- 模型假设一个只有一个市场、运输相同的平坦、均质平原。
- 现实区域会扭曲环带——道路、河流、地形和冷藏改变一切。
- 但核心思想,即运输成本塑造土地利用,仍然成立。
Select all · 所有 assumptions of the von Thünen model. · 选择所有冯·杜能模型的假设条件。
It assumes a flat plain, one market, equal transport; refrigeration is a modern reality that breaks it. · 它假设平坦平原、单一市场和均质运输；冷藏是现代现实，打破了这些假设。
Von Thünen's rings are a model, not a map. Its assumptions (flat land, one market, no roads or refrigeration) never hold perfectly. Modern refrigeration lets perishable goods travel far, breaking the innermost ring. Use it to explain patterns, not to predict exact locations.
冯·杜能的环带是模型,不是地图。它的假设(平坦土地、一个市场、无道路或冷藏)从不完美成立。现代冷藏让易腐货物远行,打破了最内环。用它来解释格局,而非预测确切位置。
Near a city you find perishable dairy and vegetables (Ring 1); far out, cheap grazing land for cattle (Ring 4). But a modern highway can bend the rings, letting a distant farm ship fresh produce quickly — reality adjusting the model.
城市附近你看到易腐的乳业和蔬菜(第 1 环);远处是养牛的便宜放牧地(第 4 环)。但一条现代高速公路能扭曲环带,让远处的农场快速运送新鲜农产品——现实调整了模型。
The von Thünen model predicts concentric rings of land use around a market based on transport cost and distance: perishable/intensive near, extensive/cheap far. It assumes a flat uniform plain; reality bends the rings, but transport cost still shapes land use.
冯·杜能模型基于运输成本和距离预测围绕市场的同心圆环带:易腐/集约在近,粗放/便宜在远。它假设平坦均质平原;现实扭曲环带,但运输成本仍塑造土地利用。