一个新的,后苏联的火灾干扰制度推动了欧亚大草原上的鸟类多样性和丰富性
Tejas Bhagwat1, Tobias Kuemmerle2,3, Mahmood Soofi1,2,4
1Department of Conservation Biology, University of Göttingen, Göttingen, Germany.
Global change biology
|November 14, 2023
概括
在苏联解体后,欧亚大陆的草原中增加了火灾干扰.
科学领域:
- 生态生态学 生态生态学
- 保护生物学 保护生物学
- 遥感 遥感 遥感 遥感
背景情况:
- 草原生态系统和生物多样性受到火灾和土地利用的影响,这些都是社会经济驱动的.
- 欧亚大草原,特别是哈萨克斯坦,经历了由于土地被遗弃和牧场减少1991年后的火灾活动增加,导致植被变化.
- 这些后苏联火灾制度转变对草原生物多样性的影响仍然在很大程度上未被研究.
研究的目的:
- 在哈萨克斯坦的草原和半沙漠中,调查鸟类种类丰富和丰富对火灾干扰在不同牧场强度的反应.
- 为了确定影响鸟群的特定火灾变量 (范围,累积面积,频率).
- 评估火灾对鸟类生物多样性的长期遗留影响.
主要方法:
- 利用了哈萨克斯坦草原和半沙漠地区的综合鸟类丰度数据集.
- 使用MODIS燃烧区域产品来分析火灾干扰变量.
- 与火灾指标和放牧强度相关的模拟鸟类种类丰富性和丰富性.
主要成果:
- 随着火灾范围的增加,累计燃烧面积和火灾频率的增加,鸟类物种的丰富性和丰富性显著下降,特别是在未放牧和适度放牧的地区.
- 更多的鸟类物种经历了高火灾干扰的负面影响,而不是积极的影响.
- 在干扰后的至少8年内,观察到火灾对鸟类社区的重大遗留影响.
结论:
- 苏联后火灾干扰的增加导致了鸟类数量大幅下降,并在欧亚大陆的草原中改变了社区集会.
- 恢复野生草食动物种群和传统放牧系统对于管理野火和减轻生物多样性丧失至关重要.
- 保护战略必须考虑火灾制度和牧场压力的相互作用,以有效管理草原.
关键词:
MODIS燃烧区域产品MODIS燃烧区域产品农田被遗弃 农田被放弃火灾干扰火灾干扰草原 草原 草原 草原 草原放牧强度的放牧强度是什么畜牧业 畜牧业 畜牧业 畜牧业皮里克 (Pyric) 是一种草食动物.更多相关视频
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