人口缩促进了生态系统服务供应能力,控制了石荒漠化
Shihao Zhang1, Kangning Xiong1, Xiaoying Min1
1School of Karst Science, Guizhou Normal University/State Engineering Technology Institute for Karst Desertification Control, Guiyang 550001, People's Republic of China.
The Science of the total environment
|January 28, 2024
概括
人口缩,通过外迁或下降,改善生态资产,促进生态系统服务在退化的地地区. 这减轻了土地压力,提高了环境质量.
科学领域:
- 环境科学 环境科学
- 生态生态学 生态生态学
- 地理 地理 地理 地理.
背景情况:
- 卡斯特荒漠化地区的生态服务有所改善,但人口缩通过生态资产对生态系统服务的影响仍然不清楚.
- 人口动态,包括增长和缩,与土地利用,植被质量和生态系统服务相互作用.
研究的目的:
- 探索人口变化,生态资产 (组成和质量) 和生态系统服务之间的联系.
- 分析人口缩如何通过生态资产在人口增长和下降期间影响生态系统服务供应能力.
主要方法:
- 泰尔-森的中位数,回归分析和差异分区被用来分析人口数据 (观察和预测),土地利用,规范差异植被指数 (NDVI),树木高度和生态系统服务.
- 该研究比较了人口增长 (2000-2038) 和人口下降 (2039-2100) 期间的退化 (卡斯特荒漠化) 和非退化生态区域.
主要成果:
- 在人口增长期间,退化生态区域的外迁导致森林扩张,增加了NDVI和树木高度,并增强了生态系统服务供应能力.
- 与退化地区相比,具有移民的非退化生态区域的森林变化,NDVI,树木高度和生态系统服务供应能力较低.
- 在人口减少期间,人口缩,生态资产和生态系统服务供应能力之间的正相关性持续存在.
结论:
- 人口减少,无论是通过外迁还是内部减少,都会减轻退化生态区域的土地压力.
- 这种缓解土地压力,通过积极调节沙漠化地区的生态资产,提高了生态系统服务供应能力.
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