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Increasing plant diversity with border crops reduces insecticide use and increases crop yield in urban agriculture

文献类型： 外文期刊

作者： Wan, Nian-Feng 1 ; Cai, You-Ming 1 ; Shen, Yan-Jun; Ji, Xiang-Yun 1 ; Wu, Xiang-Wen; Zheng, Xiang-Rong; Cheng 1 ;

作者机构： 1.Shanghai Acad Agr Sci, Ecoenvironm Protect Res Inst, Shanghai Key Lab Protected Hort Technol, Shanghai Engn Res Ctr Low Carbon Agr, Shanghai, Peoples R China

2.Fudan Univ, SIEC, Inst Biostat,Key Lab Biodivers Sci & Ecol Engn,Mi, S

期刊名称：ELIFE （ 影响因子：8.14； 五年影响因子：9.056 ）

ISSN： 2050-084X

年卷期： 2018 年 7 卷

页码：

收录情况： SCI

摘要： Urban agriculture is making an increasing contribution to food security in large cities around the world. The potential contribution of biodiversity to ecological intensification in urban agricultural systems has not been investigated. We present monitoring data collected from rice fields in 34 community farms in mega-urban Shanghai, China, from 2001 to 2015, and show that the presence of a border crop of soybeans and neighboring crops (maize, eggplant and Chinese cabbage), both without weed control, increased invertebrate predator abundance, decreased the abundance of pests and dependence on insecticides, and increased grain yield and economic profits. Two 2 year randomized experiments with the low and high diversity practices in the same locations confirmed these results. Our study shows that diversifying farming practices can make an important contribution to ecological intensification and the sustainable use of associated ecosystem services in an urban ecosystem.

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