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人类人口减少和气候变暖对日本鸟类种群的影响
Naoki Katayama1, Taku Fujita2, Mutsuyuki Ueta3
1Division of Agroecosystem Management Research, Institute for Agro-Environmental Sciences NARO, Tsukuba-shi, Japan.
概括
发达国家的生物多样性面临着二次继承和气候变化的挑战. 日本的鸟类种群呈现下降趋势,特别是一般性和开放息地物种,突出了有针对性的保护战略的需要.
科学领域:
- 生态生态学 生态生态学
- 保护生物学 保护生物学
- 鸟类学 鸟类学是一门学科.
背景情况:
- 发达国家经历了人口减少,二次继承和气候变暖,影响生物多样性.
- 评估这些变化对物种种群趋势的国家级影响对于全球保护至关重要.
- 很少有研究全面评估了这些因素对物种种群动态的影响.
研究的目的:
- 为了估计日本常见的繁殖鸟类物种的种群趋势.
- 检查人口趋势,物种特征,土地利用和气候变暖之间的关联.
- 在人口减少和变暖的环境中为保护战略提供信息.
主要方法:
- 对2009年至2020年日本47种常见的繁殖鸟类的全国性鸟类计数数据的分析.
- 估计每个物种的总体种群趋势.
- 统计检查人口趋势和物种特征 (息地群,温度利基),土地利用 (废弃的农田) 和时间变化之间的关系.
主要成果:
- 总体人口趋势有所不同,有4个物种增加,18个物种稳定,11个物种适度下降,13个物种不确定.
- 具有较低温度的物种和森林通用学家/开放息地专家显示出更明显的下降.
- 2015年以后,下降速度加快,特别是在废弃农田数量增加的地区.
结论:
- 在日本,常见的繁殖鸟因土地利用变化和气候变暖而面临着人口趋势的恶化.
- 保护工作应该考虑森林专家的被动回林和非森林专家的积极恢复.
- 土地利用规划必须在持续的环境和人口变化的背景下整合生物多样性保护.
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