WEED COMMUNITY STRUCTURE AND CHARACTERIZATION OF MACHINE-TRANSPLANTED PADDY FIELDS IN AREAS OF RICE-WHEAT ROTATION IN NORTHERN ZHEJIANG PROVINCE, CHINA

文献类型： 外文期刊

第一作者： Xu, W. D.

作者： Xu, W. D.;Li, J.;Lu, Q.;Li, G.

作者机构：

关键词： weed community; biodiversity; machine-transplanted paddy fields; rice-wheat rotation areas; northern Zhejiang; P; R; China

期刊名称：APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH （ 影响因子：0.711； 五年影响因子：0.797 ）

ISSN： 1589-1623

年卷期： 2021 年 19 卷 4 期

页码：

收录情况： SCI

摘要： The study aims to characterize weed communities and identify differences in species diversity in counties using machine-transplanted paddy fields (MTPs) in areas of rice-wheat rotation in northern Zhejiang Province (NZP), P.R. China. Values of weed relative abundance (VRA), species biodiversity (SB), breadth of ecological niche (BEN) and overlap values of ecological niche (OVEN) were analyzed. The results indicated that there were 43 weed species belonging to 30 genera of 15 families, the majority being part of Gramineae and Cyperaceae. Species biodiversity in Tonglu county was significantly higher, with greater species richness, Simpson, Shannon-Wiener, and Pielou indices compared to other counties in terms of weed distribution. Hierarchical cluster analysis revealed that the weed species in NZP were divided into four principal groups. BEN analysis demonstrated that predominant weeds such as Leptochloa chinensis (L.) Nees and Echinochloa crus-galli var. mitis (Pursh) Petermann displayed higher BEN values. OVEN analysis indicated that 76.1% of the 276 pairs exhibited a niche overlap value > 0.7, suggesting that there was great similarity in resource utilization between the majority of weed species pairs. The results will help local farmers to adopt more integrated management practices in MTPs, allowing the vegetation to provide various ecosystem services.

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