数字农科院2.0

Diversity-conditioned soil strengthens plant diversity-productivity relationship

文献类型： 外文期刊

作者： Ren, Haiyan;Xie, Jiayao;Li, Kang;Shi, Sibo;Li, Xianping;Guo, Hui;Liu, Manqiang;Yu, Qiang

作者机构：

关键词： agriculture sustainability;ecosystem function;monoculture;plant diversity;plant-soil feedback;soil biota;soil legacy

期刊名称： JOURNAL OF APPLIED ECOLOGY

ISSN： 0021-8901

年卷期： 2023 年

页码：

收录情况： SCIE（2023版）

摘要： 1. How biodiversity affects terrestrial productivity is important to the maintenance of ecosystem services under global change. Although the crucial role of plant-soil feedbacks (PSF) in determining diversity-productivity relationship has been increasingly recognized in recent years, its legacy effects on subsequent diversity-productivity relationship are still unclear.2. We conducted a classic PSF experiment to assess how plant diversity-conditioned soils influenced subsequent plant diversity-productivity relationships, where three plant diversity levels (1, 4 and 8 species) were planted in soils conditioned at three diversity levels (conditioned by 1, 4 and 8 species for 3 years). In addition, to test the role of soil microbial diversity in mediating the effects of soil conditioning diversity, the three plant diversity levels were planted with low, moderate and high soil biodiversity created by a soil inoculum dilution.3. The results showed that plant productivities were promoted by mixed-conditioned soils (4 and 8 species) comparing to mono-conditioned soils (1 species). Productivity was positively related to planted diversity in mixed-conditioned soils, while showed no relation with planted diversity in mono-conditioned soils. Productivity was promoted by soil biodiversity when 4 and 8 species were mixed planted, while did not change when 1 species was planted.4. Synthesis and applications . Our results highlight that PSF is crucial to strengthen the positive effects of biodiversity on productivity, implying that diversifying cropping systems should be encouraged in agroecosystem management to benefit from positive PSF effects. The importance of soil legacy for optimizing plant productivity is particularly important for conditioning soils with an intermediate number of plant species.

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