stable age distribution

简明释义

稳定年龄分布

英英释义

例句

1.In a well-managed forest, you can often observe a stable age distribution 稳定的年龄分布 among the trees, which indicates healthy growth.

在一个管理良好的森林中，您通常可以观察到树木之间的稳定的年龄分布 稳定的年龄分布，这表明健康的生长。

2.Cities with a stable age distribution 稳定的年龄分布 can better plan for infrastructure and services.

拥有稳定的年龄分布 稳定的年龄分布的城市可以更好地规划基础设施和服务。

3.To achieve a stable age distribution 稳定的年龄分布, wildlife managers often implement controlled breeding programs.

为了实现稳定的年龄分布 稳定的年龄分布，野生动物管理者通常会实施控制繁殖计划。

4.The researchers found that the species had a stable age distribution 稳定的年龄分布, which is crucial for its long-term survival.

研究人员发现该物种具有稳定的年龄分布 稳定的年龄分布，这对其长期生存至关重要。

5.A population with a stable age distribution 稳定的年龄分布 tends to have lower rates of population decline.

一个拥有稳定的年龄分布 稳定的年龄分布的人口往往会有较低的人口下降率。

作文

In the study of population dynamics, one important concept is the idea of a stable age distribution. This term refers to a situation in which the proportions of individuals of different ages within a population remain relatively constant over time. Understanding this concept is crucial for demographers, ecologists, and policymakers alike, as it can provide insights into the sustainability of populations and the potential impacts of various demographic changes.A stable age distribution typically occurs in populations that are not experiencing significant immigration or emigration, and where birth and death rates have reached a balance. In such populations, the age structure remains consistent, meaning that the number of individuals in each age group does not fluctuate dramatically from year to year. This stability allows for better predictions regarding future population trends, including growth rates and resource needs.For instance, consider a hypothetical population of a species that has reached a stable age distribution. If this population consists of equal numbers of juveniles, adults, and seniors, we can expect that the birth rate will match the death rate over time, leading to a balanced population size. This balance is vital for the long-term survival of the species, as it ensures that there are enough breeding individuals to maintain genetic diversity while also preventing overpopulation, which can lead to resource depletion.On the other hand, if a population experiences a sudden change—such as a spike in birth rates or an increase in mortality due to disease—the stable age distribution can be disrupted. For example, a high birth rate may lead to a large number of young individuals entering the population, resulting in a skewed age distribution. This imbalance can create challenges for the population, as resources may become strained, leading to competition and potentially higher mortality rates in younger individuals.Moreover, understanding stable age distribution is essential for effective policymaking, especially in urban planning and social services. Governments often rely on demographic data to forecast future needs for housing, education, and healthcare. A population with a stable age distribution provides a predictable framework for these planning efforts, allowing for efficient allocation of resources.In contrast, populations with fluctuating age distributions may require more adaptive strategies, as their needs can change rapidly. For example, a city experiencing a sudden influx of young families may need to invest heavily in schools and childcare facilities, while an aging population might necessitate expanded healthcare services for the elderly.In conclusion, the concept of stable age distribution is a fundamental aspect of understanding population dynamics. It offers valuable insights into the health and sustainability of populations, guiding both scientific research and practical decision-making. By maintaining a stable age distribution, populations can thrive, ensuring a balance between growth and resource availability. As we face global challenges such as climate change and habitat loss, recognizing the importance of this concept will be vital for preserving biodiversity and fostering resilient communities.

在人口动态研究中，一个重要的概念是“稳定年龄分布”的概念。这个术语指的是一个群体中不同年龄个体的比例在时间上保持相对恒定的情况。理解这个概念对于人口统计学家、生态学家和政策制定者来说至关重要，因为它可以提供对人口可持续性以及各种人口变化潜在影响的洞察。通常情况下，稳定年龄分布发生在没有显著移民或移出的种群中，并且出生率和死亡率达到了平衡。在这样的种群中，年龄结构保持一致，这意味着每个年龄组中的个体数量不会在每年之间剧烈波动。这种稳定性使得对未来人口趋势的预测变得更加准确，包括增长率和资源需求。例如，考虑一个假设的物种群体，该群体已达到稳定年龄分布。如果该群体由相等数量的幼年个体、成年个体和老年个体组成，我们可以预期出生率将与死亡率相匹配，从而导致人口规模的平衡。这种平衡对物种的长期生存至关重要，因为它确保有足够的繁殖个体来维持遗传多样性，同时也防止过度繁殖，导致资源枯竭。另一方面，如果一个种群经历了突然的变化，比如出生率激增或因疾病导致的死亡率上升，稳定年龄分布就可能被打破。例如，高出生率可能导致大量年轻个体进入种群，导致年龄分布失衡。这种不平衡可能给种群带来挑战，因为资源可能变得紧张，导致竞争加剧，并可能导致年轻个体的死亡率上升。此外，理解稳定年龄分布对于有效的政策制定至关重要，特别是在城市规划和社会服务方面。政府通常依赖人口数据来预测未来对住房、教育和医疗保健的需求。拥有稳定年龄分布的人口为这些规划工作提供了可预测的框架，从而允许有效的资源配置。相反，具有波动年龄分布的人口可能需要更具适应性的策略，因为其需求可能会迅速变化。例如，一个城市如果突然涌入大量年轻家庭，可能需要大量投资于学校和托儿设施，而一个老龄化的人口可能需要扩大对老年人的医疗服务。总之，稳定年龄分布的概念是理解人口动态的基本方面。它为了解种群的健康和可持续性提供了有价值的见解，指导着科学研究和实际决策。通过维持稳定年龄分布，种群能够繁荣发展，确保增长与资源可用性之间的平衡。随着我们面临全球气候变化和栖息地丧失等挑战，认识到这一概念的重要性对于保护生物多样性和促进韧性社区将至关重要。