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过去的土地利用影响了森林的运作,即使在完全破坏生态系统之后
Nelly Paradelle1, Marianne Laslier1, Guillaume Decocq1
1Ecologie et Dynamique des Systèmes Anthropisés (EDYSAN, UMR CNRS 7058), Jules Verne University of Picardie, 1 rue des Louvels, F-80037 Amiens Cedex 1, France.
The Science of the total environment
|June 13, 2025
概括
第一次世界大战 (第一次世界大战) 扰乱了同质化的土壤,消除了战前土地使用遗产对森林生产力的影响. 然而,重新建立的林地中的树冠水含量仍然反映了历史的土地使用,表明了持久的生态影响.
科学领域:
- 生态生态学 生态生态学
- 环境科学 环境科学
- 遥感 遥感 遥感 遥感
背景情况:
- 在第一次世界大战后,在以前的耕地上重新建立了森林,而有些被摧毁,后来被再生.
- 了解历史土地利用和战争干扰对森林生态系统的长期影响,对于森林的保护和恢复至关重要.
研究的目的:
- 研究一战前的土地利用和一战前的干扰对林地生产率和树冠水含量的持久影响.
- 在受影响区域 (红区) 和未受影响区域 (蓝区) 中,比较近期 (1918年后) 和古代 (1830年之前) 森林的功能属性.
主要方法:
- 利用 Sentinel-2 卫星图像来得出规范差异植被指数 (NDVI) 和规范差异水指数 (NDWI) 作为生产力和树冠含水量的代理.
- 在8个生长季节 (2017-2024) 分析了来自399个近期和240个古老森林的数据.
- 集成的历史地图和数据库,以考虑二战前的土地使用,二战前的干扰和环境共变量,使用通用线性混合模型.
主要成果:
- 在未受影响的 (蓝色) 区域,最近的林地比古老的林地显示出更高的NDVI和NDWI.
- 在受影响 (红) 区域,最近的森林具有更高的NDWI (可与蓝区最近的森林相比),但与蓝区古老的森林相似的NDVI.
- 第二次世界大战的干扰使土壤的特性均化,掩盖了二战前土地利用对生产力的影响 (NDVI).
结论:
- 第二次世界大战的干扰大大改变了土壤的特性,影响了林地生产力,并消除了历史的土地使用遗产.
- 在重新建立的林地中,树冠水含量 (NDWI) 仍然保留了历史土地利用的特征,这可能是由于植物组成的不同.
- 该研究强调了森林生态系统发生重大历史性破坏的复杂,长期的生态后果.
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