农业环境计划不能有效地保护荷兰农业景观中的生物多样性
1Nature Conservation and Plant Ecology Group, Wageningen University, The Netherlands. David.Kleijn@staf.ton.wau.nl
Nature
|October 19, 2001
概括
旨在保护农田生物多样性的农业环境计划显示出混合的结果. 虽然它们没有改善植物或鸟类的多样性,但它们适度增加了悬浮和蜜蜂物种的丰富性.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 生态生态学 生态生态学
背景情况:
- 现代农业对环境产生影响,导致欧盟农田广泛实施农业环境计划 (AES).
- 在欧盟的共同农业政策中,AES代表了一项重大金融投资,预计成本将增加.
- 尽管已经实施了很长一段时间,但对AES在生物多样性保护方面的有效性进行强有力的复制研究很少.
研究的目的:
- 评估农业环境计划在密集管理的荷兰农业景观中保护生物多样性的有效性.
- 评估管理协议对植物,鸟类,和蜜蜂的物种丰富性的影响.
主要方法:
- 在荷兰对78个配对领域进行了一项研究,将AES管理协议下的领域与传统管理领域进行了比较.
- 在选定的领域调查了植物,鸟类,和蜜蜂的种群.
- 分析了物种丰富性数据,以确定AES对不同分类群体的影响.
主要成果:
- 农业环境计划在增强植物和鸟类物种丰富方面被发现是无效的.
- 在有管理协议的田间,四种常见的鱼物种的丰度下降.
- 在AES下的田地上,在悬浮和蜜蜂中观察到物种丰富度的适度增加.
结论:
- 目前的农业环境计划,特别是荷兰农业景观的管理协议,在保护整体生物多样性方面取得了有限的成功.
- 有必要进行科学严格的评估,以指导未来的有效农业环境计划的设计和实施.
- 调查结果表明,重新评估AES战略是必要的,以确保积极的生物多样性结果.
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