Case Study Practical Exercises | 案例分析实战演练

📚 Case Study Practical Exercises | 案例分析实战演练

In Key Stage 3 Geography, case studies are essential for understanding how geographical processes affect real places and people. This article is a practical guide to analysing case studies, with examples from population, settlement, coasts, rivers, and hazards. You will learn how to structure your answers, identify causes and effects, and evaluate management strategies. Each section includes a mini-task so you can practise applying your knowledge just like in an exam.

在关键阶段3地理中，案例研究对于理解地理过程如何影响真实的地点和人们至关重要。本文是一篇分析案例研究的实战指南，涵盖人口、聚落、海岸、河流和自然灾害等主题。你将学习如何构建答案、识别因果以及评估管理策略。每个小节都包含一个小任务，让你可以像在考试中一样练习运用所学知识。

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1. Understanding Case Study Structures | 理解案例分析结构

To succeed in case study questions, you should use a clear framework. The ‘PEE’ method (Point, Evidence, Explanation) is widely used. Start by making a point about the case study, then provide specific evidence such as data or place names, and finally explain how this evidence supports your point. For example: Point – ‘Coastal erosion is severe at Happisburgh.’ Evidence – ‘The cliff has retreated by over 50 metres since 1990.’ Explanation – ‘This rapid retreat is caused by soft glacial till and strong waves from the north-east.’ This structure ensures your answers are focused and detailed. You should also use linking words like ‘because’, ‘therefore’ and ‘however’ to connect your ideas.

要成功回答案例研究问题，你应该使用清晰的框架。’PEE’方法（论点、证据、解释）被广泛使用。首先提出关于案例研究的论点，然后提供具体证据，如数据或地名，最后解释该证据如何支持你的论点。例如：论点——’赫姆斯比的海岸侵蚀非常严重。’ 证据——’自1990年以来，悬崖已经后退了超过50米。’ 解释——’这种快速后退是由松软的冰川堆积物和来自东北方向的强浪造成的。’ 这种结构确保你的答案聚焦且详细。你还应使用’因为’、’因此’和’然而’等连接词来衔接观点。

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2. Population Dynamics: China’s One-Child Policy | 人口动态：中国独生子女政策

China introduced the One-Child Policy in 1979 to slow population growth. Families in urban areas were allowed only one child, while rural families could have a second if the first was a girl. The policy reduced the birth rate from 33‰ in 1970 to 12‰ in 2010. However, it also created problems: an ageing population, a skewed sex ratio (118 boys for every 100 girls), and labour shortages. The policy was relaxed in 2015. To analyse this case study, you should consider both positive and negative impacts and link them to demographic indicators like birth rate, death rate and dependency ratio.

中国于1979年推出独生子女政策以减缓人口增长。城市家庭只能生育一个孩子，而农村家庭如果第一个是女孩可以生育第二个。该政策使出生率从1970年的33‰下降到2010年的12‰。然而，它也造成了问题：人口老龄化、性别比例失衡（每100名女孩对应118名男孩）以及劳动力短缺。该政策于2015年放宽。要分析这个案例，你应考虑积极和消极影响，并将其与出生率、死亡率和抚养比等人口指标联系起来。

Let’s practise. Task: Using the One-Child Policy case, give one positive impact with evidence, and one negative impact with explanation.

让我们练习。任务：利用独生子女政策案例，给出一个积极影响及证据，以及一个消极影响及解释。

Positive impact: The policy successfully reduced the birth rate, easing pressure on resources. Evidence: The fertility rate fell from 2.9 in 1979 to 1.7 by 2000. Negative impact: It led to an ageing population, as fewer young people were born to support the elderly. Explanation: In 2020, the proportion of over-65s reached 13.5%, straining pension and healthcare systems.

积极影响：该政策成功降低了出生率，缓解了资源压力。证据：生育率从1979年的2.9降至2000年的1.7。消极影响：它导致了人口老龄化，因为出生的年轻人减少，无法支持老年人。解释：2020年，65岁以上人口比例达到13.5%，给养老和医疗系统带来压力。

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3. Urbanisation: Favelas in Rio de Janeiro | 城市化：里约热内卢的贫民窟

Rocinha is one of the largest favelas in Rio de Janeiro, Brazil. It is a self-built settlement where many houses are constructed from scrap materials and lack secure land tenure. Challenges include overcrowding, lack of sanitation, high crime rates and poor access to formal healthcare and education. However, improvements have been made through schemes such as Favela-Bairro, which provided paved roads, water pipes, electricity and waste collection. Some areas also saw the installation of cable cars to improve access and reduce the isolation of hillside communities. When analysing this case, it is useful to weigh up the original problems against the effectiveness of the solutions.

罗西尼亚是巴西里约热内卢最大的贫民窟之一。这是一个自建的聚落，许多房屋用废料搭建，缺乏安全的土地所有权。面临的挑战包括过度拥挤、缺乏卫生设施、高犯罪率以及难以获得正规医疗和教育。然而，通过 Favela-Bairro 等项目进行了改善，铺设了道路，安装了水管、电力和垃圾收集服务。一些地区还修建了缆车以改善交通，减少山坡社区的隔离感。分析此案例时，权衡最初的问题与解决方案的有效性很有帮助。

Task: Describe one challenge faced by residents of favelas and evaluate one improvement project, mentioning its long-term sustainability.

任务：描述贫民窟居民面临的一个挑战，并评价一个改善项目，提及其长期可持续性。

Challenge: Lack of sanitation – open sewers and limited toilets lead to diseases like cholera. Improvement: The Favela-Bairro project installed sewer systems and piped water in Rocinha. However, maintenance is costly, and rapid population growth can outstrip the new infrastructure, making long-term sustainability uncertain.

挑战：缺乏卫生设施——明沟和有限的厕所导致霍乱等疾病。改善：Favela-Bairro 项目在罗西尼亚安装了污水系统和自来水。然而，维护成本高，人口快速增长可能超过新基础设施的承载能力，使长期可持续性不确定。

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4. Coastal Erosion: Happisburgh, UK | 海岸侵蚀：英国赫姆斯比

Happisburgh is a village on the Norfolk coast where erosion is extremely rapid. The cliffs are made of soft glacial till, which is easily attacked by waves, especially during north-easterly storms. Since 1990, over 50 metres of land have been lost, and several houses have fallen into the sea. Sea-level rise linked to climate change is making the problem worse. Management strategies include hard engineering such as rock groynes and a sea wall, but these are expensive and can increase erosion elsewhere. Soft engineering, like beach nourishment, is temporary. Some residents have accepted managed retreat – moving inland. A comparison of these approaches helps students understand the conflict between cost, effectiveness and environmental impact.

赫姆斯比是诺福克海岸的一个村庄，侵蚀极为迅速。悬崖由松软的冰川堆积物构成，很容易被海浪侵蚀，尤其是在东北风暴期间。自1990年以来，已损失超过50米土地，几座房屋落入海中。与气候变化相关的海平面上升使问题恶化。管理策略包括硬工程，如岩质防波堤和海墙，但这些费用昂贵且可能加剧其他地方的侵蚀。软工程，如补沙，是暂时的。一些居民已接受管理撤退——向内陆迁移。比较这些方法有助于学生理解成本、有效性和环境影响之间的冲突。

The table below summarises the main defences used at Happisburgh:

下表总结了赫姆斯比使用的主要防护措施：

Strategy	Description	Pros	Cons
Sea wall	Concrete wall to reflect waves	Effective immediate protection	Very expensive, unsightly, can increase erosion further along the coast
Rock groynes	Wooden or rock barriers trap sand	Creates wider beach, absorbs wave energy	Starves down-drift beaches of sand
Managed retreat	Allowing the sea to reclaim land, moving people	Natural, long-term, cost-effective	Loss of property, emotional stress for residents

Task: Evaluate the most sustainable strategy for Happisburgh, giving reasons.

任务：评价赫姆斯比最可持续的策略，并给出理由。

Managed retreat may be the most sustainable long term because it works with natural processes and avoids high maintenance costs. However, it is socially difficult because families lose their homes. Hard engineering provides short-term safety but transfers the problem elsewhere and requires constant funding. Therefore, sustainability depends on whether we value environmental or social factors more.

管理撤退可能是长期最可持续的，因为它顺应自然过程并避免了高额的维护成本。然而，这在社会上很难实施，因为家庭会失去家园。硬工程提供了短期安全，但将问题转移到其他地方并需要持续资金。因此，可持续性取决于我们更重视环境还是社会因素。

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5. River Flooding: The 2015 UK Floods | 河流洪水：2015年英国洪水

In December 2015, Storm Desmond brought record-breaking rainfall to Cumbria, UK. Honister Pass recorded 341.4 mm of rain in 24 hours. The ground was already saturated from earlier rainfall, so the water ran straight into rivers such as the River Eden and River Greta. The steep valleys and urban surfaces worsened the flooding. Thousands of homes were flooded, bridges collapsed, and insurance payouts exceeded £1.3 billion. Short-term responses included rescue operations and temporary defences; long-term measures involved improving flood walls and installing better warning systems. This case illustrates the linked physical and human causes of river floods.

2015年12月，风暴德斯蒙德给英国坎布里亚郡带来了创纪录的降雨。霍尼斯特山口在24小时内录得341.4毫米降雨。之前降雨已使地面饱和，因此雨水直接流入伊登河和格雷塔河。陡峭的山谷和城市地表加剧了洪水。数千座房屋被淹，桥梁倒塌，保险赔付超过13亿英镑。短期应对措施包括救援行动和临时防御；长期措施包括改进防洪墙和安装更好的预警系统。此案例阐明了河流洪水交织的自然和人为原因。

Task: Explain how both physical and human factors contributed to the severity of the 2015 floods. Use specific place evidence.

任务：解释自然和人为因素如何共同加剧了2015年洪水的严重性。使用具体地点证据。

Physical factors: The exceptional rainfall was caused by a long-lasting weather front. The steep relief of the Lake District sped up surface run-off into river channels. Human factors: Urbanisation in Carlisle and Cockermouth increased impermeable surfaces, meaning more water ran into drains and rivers. Deforestation on slopes had reduced interception, so water reached rivers faster. Together these made the peak discharge much higher than the river channels could contain.

自然因素：异常降雨是由持久的锋面引起的。湖区的陡峭地形加速了地表径流进入河道。人为因素：卡莱尔和科克茅斯的城市化增加了不透水表面，意味着更多水流入排水沟和河流。山坡上的森林砍伐减少了截留，使水更快地到达河流。这些因素共同使洪峰流量远高于河道容量。

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6. Earthquake Hazard: Nepal 2015 | 地震灾害：2015年尼泊尔地震

On 25 April 2015, a magnitude 7.8 earthquake struck Nepal, with its epicentre near Gorkha. It was a shallow quake (only 15 km deep), which intensified surface shaking. Nearly 9,000 people died, over 22,000 were injured, and centuries-old heritage sites in Kathmandu Valley were destroyed. Tremors triggered landslides and avalanches, including one on Mount Everest that killed 22 climbers. As a low-income country (LIC), Nepal had poorly constructed buildings, limited emergency services and difficult mountainous terrain that slowed rescue efforts. By comparing with earthquakes in high-income countries (HICs), students learn how the level of development affects vulnerability and recovery.

2015年4月25日，尼泊尔发生7.8级地震，震中位于廓尔喀附近。这是一次浅源地震（仅15公里深），加剧了地面震动。近9,000人死亡，22,000多人受伤，加德满都谷地拥有数百年历史的遗产地被毁。震动引发了山体滑坡和雪崩，其中包括一次在珠穆朗玛峰上导致22名登山者死亡的雪崩。作为一个低收入国家（LIC），尼泊尔建筑质量差，应急服务有限，山区地形困难，延缓了救援工作。通过对比高收入国家（HICs）的地震，学生可以了解发展水平如何影响脆弱性和恢复。

Task: Explain why the death toll was so high in the Nepal earthquake, using specific factors.

任务：使用具体因素解释尼泊尔地震为何死亡人数如此之高。

The high death toll was due to a combination of factors. First, the shallow focus meant energy was not absorbed much by the crust, causing violent shaking at the surface. Second, many buildings were made of unreinforced masonry that collapsed easily. Third, the earthquake occurred in a densely populated region, including Kathmandu. Fourth, landslides blocked roads, hampering rescue. Finally, Nepal’s limited emergency response resources delayed medical aid and search-and-rescue operations.

高死亡人数是多种因素的结合。首先，浅源意味着能量未被地壳大量吸收，导致地表剧烈震动。其次，许多建筑物由未加固的砌体建成，容易倒塌。第三，地震发生在人口稠密地区，包括加德满都。第四，山体滑坡堵塞了道路，阻碍了救援。最后，尼泊尔有限的应急响应资源耽误了医疗救助和搜索救援行动。

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7. Volcanic Eruption: Eyjafjallajokull, Iceland | 火山喷发：冰岛埃亚菲亚德拉冰盖

In April 2010, the Eyjafjallajokull volcano in Iceland erupted. It is located beneath an ice cap, which made the eruption explosive when magma mixed with meltwater. The eruption ejected a huge ash cloud up to 9 km into the atmosphere. Because of prevailing winds, the ash drifted over Europe, forcing the closure of airspace for six days. Over 100,000 flights were cancelled, costing the airline industry around £1.3 billion. However, the crisis also boosted Icelandic tourism through clever marketing, and volcanic soil remains fertile for farming. This case demonstrates that volcanic events bring both negative economic impacts and unexpected opportunities.

2010年4月，冰岛埃亚菲亚德拉冰盖火山喷发。它位于冰盖之下，当岩浆与融水混合时，喷发变得爆炸性。喷发将巨大的火山灰云喷射至9公里高的大气中。由于盛行风，火山灰飘向欧洲，迫使空域关闭

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