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The impacts of agroforestry on soil multi-functionality depending on practices and duration

文献类型： 外文期刊

作者： Li, Shifeng 1 ; Gong, Shanshan 2 ; Hou, Yanhui 3 ; Li, Xiaona 3 ; Wang, Chao 3 ;

作者机构： 1.China Agr Univ, Coll Water Resources & Civil Engn, Qinghuadong St 17th, Beijing, Peoples R China

2.Chinese Acad Forestry, Inst Forest Ecol Environm & Protect, Beijing, Peoples R China

3.Beijing Acad Agr & Forestry Sci BAAFS, Inst Grassland Flowers & Ecol, Beijing 100097, Peoples R China

关键词： Soil multi-functionality; Agroforestry practices; Experimental duration; Climate condition; Forests

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：10.753； 五年影响因子：10.237 ）

ISSN： 0048-9697

年卷期： 2022 年 847 卷

页码：

收录情况： SCI

摘要： Agroforestry systems provide a wide range of soil multiple functions (that is, soilmulti-functionality) to human society, including the regulation of nutrients and water in soils and the sequestration of atmospheric carbon dioxide, whereas how these effects varied with agroforestry practices and environmental conditions remain unclear. Here, by comparing the soil multi-functionality in agroforestry systems to forests through the field experiment and global scale meta-analysis, we tested, 1) how agroforestry affected soil multi-functionality in a single field study and at the global scale, 2) whether the effects of agroforestry on soil multi-functionality changed in different agroforestry practices, 3) whether the effects of agroforestry on soil multi-functionality varied with environmental conditions. Our study showed that most of the soil functions in agroforestry systems is higher than in forests at the global scale, but show no significant differences between agroforestry and planted forests in our field study. We also found that the effects of agroforestry on soil multi-functionality were varied with agroforestry practices, showing a greater positive in forest-herbage systems than in other practices. In addition, the positive effects of agroforestry on soil organic carbon and total phosphorus declined with the extension of experimental duration. Furthermore, our analysis found that climate conditions had a minor effect on the effects of agroforestry on soil functions. Our analysis revealing that the effects of agroforestry on soil functions depend on agroforestry practices, highlighting that the effects of agroforestry may be diminished with age, and suggesting that the evaluation of ecological impacts of agroforestry should be based on long-term experiments across multiple practices.

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