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

被引:1
|
作者
Wan, Nian-Feng [1 ,2 ]
Cai, You-Ming [1 ]
Shen, Yan-Jun [3 ]
Ji, Xiang-Yun [1 ]
Wu, Xiang-Wen [4 ]
Zheng, Xiang-Rong [2 ]
Cheng, Wei [4 ]
Li, Jun [5 ]
Jiang, Yao-Pei [4 ]
Chen, Xin [6 ]
Weiner, Jacob [7 ]
Jiang, Jie-Xian [1 ]
Nie, Ming [2 ]
Ju, Rui-Ting [2 ]
Yuan, Tao [1 ]
Tang, Jian-Jun [6 ]
Tian, Wei-Dong [2 ]
Zhang, Hao [1 ]
Li, Bo [2 ]
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, Shanghai Chongming Dongtan Wetland Ecosyst Res St, Shanghai, Peoples R China
[3] Chongming Agr Technol Extens & Serv Ctr, Shanghai, Peoples R China
[4] Shanghai Agr Technol Extens & Serv Ctr, Shanghai, Peoples R China
[5] Climate Ctr Shanghai, Shanghai, Peoples R China
[6] Zhejiang Univ, Coll Life Sci, Hangzhou, Zhejiang, Peoples R China
[7] Univ Copenhagen, Dept Plant & Environm Sci, Frederiksberg, Denmark
来源
ELIFE | 2018年 / 7卷
关键词
CHONGMING ECO-ISLAND; LINEAR MIXED MODELS; ECOLOGICAL INTENSIFICATION; GENERALIST PREDATORS; ECOSYSTEM SERVICES; BIODIVERSITY LOSS; KNOWLEDGE; POVERTY; GAPS;
D O I
10.7554/eLife.35103
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
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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页数:21
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