文献类型：期刊文献

英文题名：Soil Microplastic Diversity Influences Productivity of Plant Communities

作者：He, Lin-Xuan[1,2] Cao, Xiao-Xiao[2] Roiloa, Sergio R.[3] Zhang, Xiao-Mei[2] Xue, Wei[2] Lei, Jing-Pin[1] Yu, Fei-Hai[2]

第一作者：He, Lin-Xuan

机构：[1] Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China; [2] Institute of Wetland Ecology & Clone Ecology, Taizhou University, Zhejiang, Taizhou, 318000, China; [3] BioCost Group, Department of Biology, Faculty of Science, Universidade da Coru?a, A Coru?a, 15071, Spain

年份：2023

外文期刊名：SSRN

收录：EI(收录号：20230141894)

语种：英文

外文关键词：Biomass - Ecosystems - High density polyethylenes - Microplastic - Pilot plants - Polypropylenes

摘要：Ecosystems experience strong microplastic pollution and the ecological impacts of microplastic pollution have received increasing attention. While an ecosystem can be contaminated by different numbers of microplastics, no study has tested the impacts of the diversity of microplastic types on plant communities. We constructed an experimental plant community with six plant species in soils with three levels of microplastic diversity (1, 2 and 4 types of microplastics) using six types of common microplastics differing in chemical composition and/or morphology, i.e., polystyrene foams (EPS), polyethylene fibers (PET), polypropylene fibers (PP), polyethylene beads (HDPE), polylactic beads (PLA), and polyamide beads (PA6). Different types of microplastics in the soil differed significantly in their impacts on total and shoot biomass of the plant community, but not on its species evenness. Interestingly, total, shoot and root biomass of the plant community decreased significantly with increasing soil microplastic diversity. This was because shoot biomass of the dominant species Lolium perenne decreased significantly with increasing soil microplastic diversity. Consequently, species evenness of the plant community tended to be higher in in the treatment with two and four types of microplastics than in the treatment with only one type. Therefore, microplastic diversity in the soil can influence productivity of plant communities. These results highlight the importance of taking microplastic diversity into account when testing the ecological impacts of microplastics. ? 2023, The Authors. All rights reserved.