Effects of land use and insecticides on natural enemies of aphids in cotton: First evidence from smallholder agriculture in the North China Plain

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cg.contributor.affiliationChinese Academy of Sciencesen_US
cg.contributor.affiliationHuzhou Teachers Collegeen_US
cg.contributor.affiliationWageningen University & Researchen_US
cg.contributor.affiliationInternational Food Policy Research Instituteen_US
cg.contributor.affiliationChinese Academy of Agricultural Sciencesen_US
cg.contributor.affiliationBeijing Normal Universityen_US
cg.contributor.crpWater, Land and Ecosystemsen_US
cg.howPublishedFormally Publisheden_US
cg.identifier.doihttps://doi.org/10.1016/j.agee.2013.11.008en_US
cg.identifier.projectIFPRI - Environment and Production Technology Divisionen_US
cg.identifier.publicationRankAen_US
cg.identifier.wlethemeRegenerating Degraded Agricultural Ecosystemsen_US
cg.isijournalISI Journalen_US
cg.issn0167-8809en_US
cg.journalAgriculture, Ecosystems and Environmenten_US
cg.subject.wleECOSYSTEM SERVICESen_US
cg.subject.wleLANDSCAPE CONSERVATIONen_US
cg.volume183en_US
dc.contributor.authorKe Zhouen_US
dc.contributor.authorJikun Huangen_US
dc.contributor.authorXiangzheng Dengen_US
dc.contributor.authorWerf, A.W. van deren_US
dc.contributor.authorZhang, Weien_US
dc.contributor.authorYanhui Luen_US
dc.contributor.authorKongming Wuen_US
dc.contributor.authorFeng Wuen_US
dc.date.accessioned2015-10-02T07:42:17Zen_US
dc.date.available2015-10-02T07:42:17Zen_US
dc.identifier.urihttps://hdl.handle.net/10568/68415en_US
dc.titleEffects of land use and insecticides on natural enemies of aphids in cotton: First evidence from smallholder agriculture in the North China Plainen_US
dcterms.abstractStudies conducted in the USA and Europe have shown that diverse landscapes in general support greater natural enemy abundance. No quantitative evidence on the relationship between land use diversity and natural enemies has been reported from developing countries, where fields and farms are much smaller than in modernized agriculture in the west, and where insecticide use is often high and indiscriminate. This paper examines the effects of land use and farmers’ insecticide application on natural enemies of aphids in cotton production, based on a unique dataset that links household and cotton field surveys to a detailed assessment of land uses in the landscapes surrounding the cotton fields in the North China Plain (NCP), a major grain and cotton production region in China. Our results show that, in the NCP where farms are small and landscape is dominated by a few crops, Shannon or Simpson land use diversity index is not a good indicator for explaining the relationship between land use and densities of aphid natural enemies. Instead, the types and proportions of cropland habitat mattered. Landscapes with more maize and grassland have higher ladybeetle populations in cotton fields. Farmers’ pest management practices such as the amount and timing of insecticide use significantly affect ladybeetle densities. These results imply that there is a need to recognize the potential positive role of cropland use in pest management and call for more judicious insecticide use strategies by smallholder farmers in the North China Plain.en_US
dcterms.accessRightsLimited Accessen_US
dcterms.bibliographicCitationKe Zhou, Jikun Huang, Xiangzheng Deng, Werf, W. van der, Wei Zhang, Yanhui Lu, Kongming Wu and Feng Wu. 2014. Effects of land use and insecticides on natural enemies of aphids in cotton: First evidence from smallholder agriculture in the North China Plain. Agriculture, Ecosystems and Environment 183:176-184.en_US
dcterms.extentp. 176-184en_US
dcterms.issued2014-01en_US
dcterms.languageenen_US
dcterms.licenseCopyrighted; all rights reserveden_US
dcterms.publisherElsevieren_US
dcterms.replaceshttps://ebrary.ifpri.org/digital/collection/p15738coll5/id/4195en_US
dcterms.subjectinsecticide useen_US
dcterms.subjectcottonen_US
dcterms.subjectnatural enemiesen_US
dcterms.subjectinsecticidesen_US
dcterms.subjectlandscapeen_US
dcterms.subjectladybeetleen_US
dcterms.subjectecosystem servicesen_US
dcterms.typeJournal Articleen_US

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