📚 Year 10 CAIE Geography: Core Knowledge Summary | 10年级CAIE地理：核心知识点梳理
Year 10 CAIE Geography introduces students to the key themes of population, settlement, natural environments, and economic development. A solid grasp of these core topics not only builds a strong foundation for the IGCSE examination but also helps you understand the dynamic relationships between people and the planet. This article distills the essential knowledge points you need to master, with paired English–Chinese explanations to support bilingual learners.
10 年级 CAIE 地理课程引导学生探索人口、聚落、自然环境与经济发展等核心主题。掌握这些基础知识不仅为 IGCSE 考试打下扎实根基，也能帮助你理解人与地球之间不断变化的关系。本文梳理了必须掌握的核心知识点，并以英文-中文对照讲解的方式助你复习。
1. Population Dynamics | 人口动态
The crude birth rate (CBR) is the number of live births per 1,000 people per year. Together with the crude death rate (CDR), it determines natural population change.
粗出生率 (CBR) 是每年每 1 000 人中的活产婴儿数。它与粗死亡率 (CDR) 共同决定人口的自然变动。
Natural increase = Birth rate − Death rate
自然增长率 = 出生率 − 死亡率
Countries with high birth rates and falling death rates, such as many in sub-Saharan Africa, experience rapid population growth. In contrast, many high-income countries have low birth rates and an ageing population, leading to a high old-age dependency ratio.
出生率高且死亡率下降的国家（如撒哈拉以南非洲的许多国家）会经历人口快速增长。相反，许多高收入国家出生率低、人口老龄化，导致老年抚养比高企。
The Demographic Transition Model (DTM) describes how birth and death rates change as a country develops. Stage 2 sees a falling death rate, Stage 3 a falling birth rate, and Stage 4 low, stable rates. Stage 5, found in some post-industrial societies, shows a very low birth rate below the death rate.
人口转变模型 (DTM) 描述了一个国家在发展中出生率和死亡率的变化。第二阶段死亡率下降，第三阶段出生率下降，第四阶段二者均低且稳定。第五阶段出现在一些后工业化社会，出生率极低甚至低于死亡率。
Population pyramids illustrate the age–sex structure of a population. A wide base indicates a high proportion of young dependents (0–14), while a narrow apex reveals a smaller elderly cohort. Expansive pyramids are typical of developing countries; constrictive pyramids are found in ageing populations.
人口金字塔显示人口的年龄-性别结构。宽阔的底座代表少年抚养人口 (0–14 岁) 占比高，而狭窄的顶端表示老年人数较少。扩张型金字塔常见于发展中国家；收缩型金字塔则多出现在人口老化地区。
2. Migration | 人口迁移
Migration is the permanent or semi-permanent movement of people from one place to another. It can be internal (within a country) or international (across borders). Push factors drive people away from their origin, while pull factors attract them to a destination.
迁移是指人们从一个地方永久或半永久性地迁往另一地。可分为国内迁移和国际迁移。推力因素驱使人离开原居地，拉力因素则吸引人前往目的地。
Common push factors include unemployment, war, natural disasters, and poor services. Pull factors often include better job opportunities, higher wages, political stability, and superior healthcare and education.
常见的推力因素包括失业、战争、自然灾害和公共服务薄弱。拉力因素通常包括更好的就业机会、较高的工资、政治稳定以及更优质的医疗和教育。
Rural-to-urban migration is particularly significant in developing countries, fuelled by push factors like rural poverty and pull factors like the perception of city jobs. It contributes to rapid urbanisation and the growth of megacities, often placing pressure on urban infrastructure.
乡城迁移在发展中国家尤为突出，受农村贫困等推力因素和城市就业机会等拉力因素驱动。这促成了快速城镇化和超大城市的增长，往往给城市基础设施带来压力。
Forced migration, such as that of refugees fleeing conflict or persecution, can create humanitarian crises. Voluntary migration, such as labour migration, can be temporary or permanent and often results in remittances sent back to the home country.
被迫迁移（如难民为逃离冲突或迫害）可能造成人道主义危机。自愿迁移（如劳务移民）可以是临时或永久性的，并常常带来寄回母国的汇款。
3. Settlement Patterns and Urban Land Use | 聚落模式与城市土地利用
Settlements can be classified by their size and function into a hierarchy: isolated dwelling, hamlet, village, town, city, and conurbation. As you move up the hierarchy, the number of settlements decreases but their size and the range of services they offer increase.
聚落可按规模和功能划分为层级：孤立住宅、小村庄、村庄、镇、城市和大都市圈。沿着层级向上，聚落数量减少，但规模和服务范围扩大。
The Burgess concentric zone model describes urban land use as a series of rings around the Central Business District (CBD). The inner city often consists of older housing and industry, while the suburbs feature newer residential areas. The Hoyt sector model modifies this by suggesting development occurs in wedges along transport routes.
伯吉斯同心圆模型将城市土地利用描述为围绕中央商务区 (CBD) 的一系列圆环。内城区通常由老旧住宅和工业区组成，而郊区则以较新的住宅区为特征。霍伊特扇形模型则加以修正，认为城市沿交通线呈楔形发展。
In many modern cities, land use is influenced by urban redevelopment and the growth of edge-of-town shopping centres and business parks. The rural–urban fringe is a zone of mixed land uses including airports, garden centres, and suburban housing estates.
在许多现代城市，土地利用受到城市再开发以及城郊购物中心和商务园区增长的影响。城乡边缘带是功能混合区，包括机场、园艺中心和郊区住宅区等。
Urbanisation is the increase in the proportion of people living in towns and cities. Counter-urbanisation is the movement of people out of large urban areas to smaller settlements, often driven by a desire for green space and lower housing costs.
城镇化是指城镇人口比例上升的过程。逆城镇化则是人们从大城市迁往较小聚落的现象，往往出于对绿色空间和较低房价的追求。
4. Plate Tectonics and Associated Hazards | 板块构造及相关灾害
The Earth's crust is divided into tectonic plates that float on the semi-molten mantle. Convection currents in the mantle cause plates to move. At constructive (divergent) boundaries, plates move apart and magma rises to form new crust, creating mid-ocean ridges and rift valleys.
地壳被分为多个构造板块，它们漂浮在半熔融的地幔之上。地幔中的对流导致板块移动。在建设性（分离型）边界，板块相互远离，岩浆上升形成新地壳，造就了大洋中脊和裂谷。
At destructive (convergent) boundaries, an oceanic plate is subducted beneath a continental plate, generating deep ocean trenches, volcanic arcs, and powerful earthquakes. When two continental plates collide, fold mountains like the Himalayas are formed.
在破坏性（汇聚型）边界，大洋板块俯冲到大陆板块之下，形成深海沟、火山弧和强烈地震。当两个大陆板块碰撞时，会形成如喜马拉雅山这样的褶皱山脉。
At conservative (transform) boundaries, plates slide past each other laterally. Friction builds up and, when suddenly released, causes earthquakes, such as those along the San Andreas Fault. Volcanic activity is not typical here.
在保守型（转换型）边界，板块横向滑过彼此。摩擦力累积并突然释放时引发地震，例如沿圣安德烈亚斯断层发生的地震。这种边界通常没有火山活动。
An earthquake's focus is the point underground where the pressure is released, while the epicentre is the point on the surface directly above it. The Richter scale measures magnitude, and the Mercalli scale measures intensity based on observed effects. Primary impacts include ground shaking and building collapse; secondary impacts can include tsunamis, fires, and landslides.
震源是地下压力释放的点，震中则是其正上方地表的点。里氏震级衡量地震规模，麦加利烈度则根据观察到的效应衡量强度。主要影响包括地面震动和建筑物倒塌；次生影响可能包括海啸、火灾和山体滑坡。
5. Weather and Climate | 天气与气候
Weather refers to day-to-day atmospheric conditions, whereas climate is the average weather of a place over a period of at least 30 years. Key elements of weather include temperature, precipitation, wind speed and direction, humidity, and atmospheric pressure.
天气指每日的大气状况，而气候是一个地方至少 30 年间的平均天气。天气要素主要包括气温、降水、风速风向、湿度和气压。
Global atmospheric circulation creates distinct climate zones. Low-pressure belts near the equator (Intertropical Convergence Zone) bring heavy rainfall, while high-pressure belts around 30° latitude produce deserts. The UK's temperate maritime climate is influenced by prevailing south-westerly winds and the North Atlantic Drift.
全球大气环流形成了明显的气候带。赤道附近的低压带（热带辐合带）带来丰沛降雨，而纬度 30° 附近的高压带则形成沙漠。英国的温带海洋性气候受盛行西南风和北大西洋暖流影响。
Three main types of rainfall are convectional, relief (orographic), and frontal. Convectional rain is common near the equator where intense heating causes rapid uplift. Relief rain occurs when moist air is forced to rise over mountains. Frontal rain happens when warm and cold air masses meet.
三种主要降水类型是对流雨、地形雨和锋面雨。对流雨常见于赤道附近，因强热导致空气快速上升。地形雨在潮湿空气被迫翻越山脉时发生。锋面雨则出现在冷暖气团相遇时。
Climate graphs (climographs) display monthly temperature as a line graph and precipitation as a bar chart. They allow rapid identification of seasonal patterns, total annual rainfall, and temperature range. Tropical rainforest climates show consistently high temperatures (around 26–28°C) and rainfall (over 2,000 mm per year) with no dry season.
气候图表用折线显示月均气温，用柱状图显示月降水量。它们能快速反映季节规律、年总降水量和气温年较差。热带雨林气候全年高温（约 26–28 °C），降水量大（年均超过 2 000 mm），没有旱季。
6. Rivers and Coasts | 河流与海岸
Rivers erode, transport, and deposit material. The four main erosion processes are hydraulic action, abrasion (corrasion), attrition, and solution. In the upper course, vertical erosion dominates, creating V-shaped valleys and interlocking spurs. In the lower course, lateral erosion and deposition widen the valley, forming meanders and floodplains.
河流进行侵蚀、搬运和沉积。四种主要侵蚀作用是水力作用、磨蚀（刻蚀）、磨蚀（磨损）和溶蚀。上游以垂直侵蚀为主，形成 V 形谷和交错山嘴。下游侧蚀和沉积作用加宽河谷，形成曲流和泛滥平原。
Meanders develop as the river swings from side to side, with erosion on the outer bend forming a river cliff and deposition on the inner bend forming a slip-off slope. When a meander is cut off, an oxbow lake is left behind. Levees are natural embankments built up by repeated flooding, while deltas form when sediment is deposited at the river mouth faster than the sea can remove it.
当河道左右摆动时形成曲流，凹岸侵蚀形成河蚀崖，凸岸沉积形成滑走坡。曲流被截断后留下牛轭湖。天然堤是河流反复泛滥堆积而成的；当河流在河口沉积的速度超过海洋搬运速度时则形成三角洲。
At the coast, waves are the main agent of erosion and deposition. Destructive waves have a strong backwash and remove material, while constructive waves have a strong swash and build up beaches. Processes like hydraulic action, abrasion, and solution create landforms such as cliffs, wave-cut platforms, caves, arches, and stacks.
在海岸带，波浪是侵蚀和沉积的主要营力。破坏性波浪回流强，带走物质；建设性波浪冲流强，堆积海滩。水力作用、磨蚀和溶蚀等过程塑造出悬崖、浪蚀平台、海蚀洞、海蚀拱和海蚀柱等地貌。
Longshore drift moves sediment along the coast in the direction of the prevailing wind. This can build spits where the coastline changes direction and form baymouth bars across a bay. Coastal management often uses hard engineering (groynes, sea walls) or soft engineering (beach nourishment, managed retreat) to reduce erosion and flooding risks.
沿岸漂移使沉积物沿主导风向方向移动，可在海岸线转向处形成沙嘴，或横跨海湾形成湾口坝。海岸管理常采用硬工程（丁坝、海堤）或软工程（沙滩养护、有管理撤退）来减少侵蚀和洪水风险。
7. Economic Development and Indicators | 经济发展与指标
Development refers to improvements in people's quality of life and standard of living. It is not just about wealth but also includes access to healthcare, education, clean water, and political freedom. Countries can be grouped into low-income, middle-income, and high-income according to GNI per capita.
发展指人们生活质量和生活水准的提升。它不仅关乎财富，还包括医疗、教育、清洁水源及政治自由的获取。按人均国民总收入，国家可分为低收入、中等收入和高收入国家。
Gross domestic product (GDP) is the total value of goods and services produced in a country in a year. GNI includes GDP plus net income from abroad. GDP per capita is a useful average but masks internal inequalities. The Human Development Index (HDI) combines life expectancy, education (mean and expected years of schooling), and GNI per capita to give a broader measure.
国内生产总值 (GDP) 是一国一年内生产的商品和服务总价值。GNI 则包括 GDP 加上来自国外的净收入。人均 GDP 是有用的平均值，但掩盖了内部不平等。人类发展指数 (HDI) 综合了预期寿命、教育（平均和预期受教育年限）和人均 GNI，提供了更全面的衡量。
The development gap describes the growing differences between wealthy and poor countries. Causes include historical factors (colonialism), debt, unfair trade, climate, and political instability. Strategies to close the gap include fair trade, debt relief, aid, and investment in education and infrastructure.
发展差距描述了富国与穷国之间日益扩大的差异。原因包括历史因素（殖民主义）、债务、不公平贸易、气候和政治不稳定。缩小差距的策略包括公平贸易、债务减免、援助以及投资于教育和基础设施。
Sustainable development meets the needs of the present without compromising the ability of future generations to meet their own needs. It balances economic growth, social inclusion, and environmental protection, as highlighted in the UN Sustainable Development Goals (SDGs).
可持续发展既满足当代人需求，又不损害后代人满足其需求的能力。它平衡经济增长、社会包容和环境保护，正如联合国可持续发展目标 (SDGs) 所强调的。
8. Agriculture and Food Production | 农业与粮食生产
Agriculture can be classified by intensity (intensive or extensive), purpose (subsistence or commercial), and output (arable, pastoral, or mixed). Intensive subsistence rice farming in the Ganges Delta supports high population densities, while extensive commercial grain farming in the prairies of North America uses large machinery and low labour inputs per hectare.
农业可按密集程度（集约或粗放）、目的（自给或商业）和产出（种植业、畜牧业或混合农业）来分类。恒河三角洲的集约型自给水稻种植支撑了高密度人口，而北美大平原的粗放型商业谷物种植则使用大型机械，单位面积劳动力投入少。
Physical inputs affecting farming include climate (temperature, precipitation, growing season), relief, and soils. Human inputs include labour, capital, technology, and government policies. The Green Revolution introduced high-yielding varieties (HYVs) of wheat and rice, along with irrigation, pesticides, and fertilisers, dramatically boosting food production in many parts of Asia and Latin America.
影响农业的自然投入包括气候（气温、降水、生长季）、地形和土壤。人为投入包括劳动力、资本、技术和政府政策。绿色革命引进了小麦和水稻的高产品种 (HYVs)，配合灌溉、农药和化肥，大幅提升了亚洲和拉丁美洲许多地区的粮食产量。
Food shortages can be caused by drought, pests, conflict, poor distribution, and poverty. Solutions range from improving storage and transport to using genetically modified (GM) crops and developing more resilient farming systems such as agroforestry. However, a debate continues over the environmental and social impacts of intensive farming and GM technology.
粮食短缺可能由干旱、虫害、冲突、分配不公和贫困引起。解决方案包括改善储存和运输、使用转基因 (GM) 作物以及发展农林业等更具韧性的耕作系统。不过，关于集约化农业和转基因技术的环境与社会影响仍存在争论。
9. Industry and Tourism | 工业与旅游业
Industry can be classified into primary (extracting raw materials), secondary (manufacturing and processing), tertiary (services), and quaternary (research and information technology). As countries develop, employment shifts from primary to secondary, and later to tertiary and quaternary sectors.
工业可分为第一产业（原料开采）、第二产业（制造加工）、第三产业（服务业）和第四产业（研究与信息技术）。随着国家发展，就业从第一产业转向第二产业，再转向第三和第四产业。
Industrial location depends on physical factors (raw materials, power, site) and human factors (labour, capital, market, transport, government policy). Footloose industries, such as software development, are not tied to a particular location and can choose areas with a high quality of life and skilled workforce.
工业区位取决于自然因素（原料、动力、厂址）和人为因素（劳动力、资本、市场、交通、政府政策）。自由布局型产业，如软体开发，不受特定位置束缚，可选择生活质量高、有技术劳动力的地区。
Tourism is one of the world’s fastest-growing industries. It brings foreign exchange, employment, and infrastructure development—but can also cause environmental damage, cultural erosion, and seasonal employment. Eco-tourism aims to minimise impact and benefit local communities, as seen in Costa Rica’s rainforest lodges.
旅游业是全球增长最快的产业之一。它带来外汇、就业和基础设施发展，但也可能造成环境破坏、文化侵蚀和季节性就业。生态旅游旨在将影响降至最低并惠及当地社区，例如哥斯达黎加的雨林旅馆。
The tourist life cycle model shows how a destination can go through exploration, involvement, development, consolidation, and stagnation. Without careful management, stagnation can lead to decline, but rejuvenation is possible through investment and diversification.
旅游地生命周期模型展示了一个目的地如何经历探查、参与、发展、巩固和停滞阶段。若不精心管理，停滞可能导致衰落，但通过投资和多样化，可以走向复兴。
10. Resource Management: Water and Energy | 资源管理：水与能源
Water security is a major global challenge. Only about 2.5% of the Earth's water is freshwater, and much of it is locked in glaciers or deep aquifers. Areas with high population density and low precipitation, such as the Middle East, face physical water scarcity, while others suffer economic scarcity due to poor infrastructure.
水资源安全是一个重大的全球挑战。地球上仅约 2.5% 的水是淡水，且大部分封存于冰川或深层含水层中。人口密度大而降水少的地区（如中东）面临物理性水稀缺，而其他地区则因基础设施差而遭受经济性水稀缺。
Non-renewable energy sources include coal, oil, and natural gas. These fossil fuels are being consumed rapidly and contribute to greenhouse gas emissions. Renewable sources—solar, wind, hydro, tidal, geothermal, and biomass—are sustainable but may have high initial costs or location constraints.
不可再生能源包括煤、石油和天然气。这些化石燃料消耗迅速并导致温室气体排放。可再生能源——太阳能、风能、水能、潮汐能、地热能和生物质——是可持续的，但初始成本高或受位置限制。
Energy use per capita is much higher in high-income countries, reflecting deeper industrialisation and higher living standards. The energy mix—the combination of different energy sources used—varies by country depending on available resources, technology, and policy. The UK’s energy mix has shifted towards renewables, yet natural gas still dominates electricity generation.
高收入国家的人均能源消耗远高于他国，反映出更高程度的工业化和生活水平。能源结构——所用各种能源的组合——因国家的资源禀赋、技术和政策而异。英国的能源结构已向可再生能源转型，但天然气仍在发电中占主导。
Resource management strategies include conservation, recycling, and substitution. Reducing, reusing, and recycling materials can lower the demand for virgin resources. On a larger scale, international agreements like the Paris Agreement aim to cut carbon emissions and promote a transition to a low-carbon economy.
资源管理策略包括节约、回收和替代。减少使用、重复使用和回收材料可降低对原生资源的需求。在更大范围内，《巴黎协定》等国际协议旨在削减碳排放，推动向低碳经济转型。
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