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Landscape changes have greater effects than climate changes on six insect pests in China.

Published on Jun 1, 2016in Science China-life Sciences3.583
· DOI :10.1007/s11427-015-4918-0
Zihua Zhao12
Estimated H-index: 12
(CAS: Chinese Academy of Sciences),
Hardev S. Sandhu10
Estimated H-index: 10
(UF: University of Florida)
+ 1 AuthorsFeng Ge30
Estimated H-index: 30
(CAS: Chinese Academy of Sciences)
Abstract
In recent years, global changes are the major causes of frequent, widespread outbreaks of pests in mosaic landscapes, which have received substantial attention worldwide. We collected data on global changes (landscape and climate) and economic damage caused by six main insect pests during 1951–2010 in China. Landscape changes had significant effects on all six insect pests. Pest damage increased significantly with increasing arable land area in agricultural landscapes. However, climate changes had no effect on damage caused by pests, except for the rice leaf roller (Cnaphalocrocis medinalis Guenee) and armyworm (Mythimna separate (Walker)), which caused less damage to crops with increasing mean temperature. Our results indicate that there is slight evidence of possible offset effects of climate changes on the increasing damage from these two agricultural pests. Landscape changes have caused serious outbreaks of several species, which suggests the possibility of the use of landscape design for the control of pest populations through habitat rearrangement. Landscape manipulation may be used as a green method to achieve sustainable pest management with minimal use of insecticides and herbicides.
  • References (52)
  • Citations (7)
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Landscape-scale pattern could affect ecosystem service such as biocontrol of agricultural pests. Additionally, pest outbreak has been shown to be interwoven with land-use intensity. In the present research, we collected and analysed the 60-year data of cereal aphids and wheat area during 1951–2010 in China. Regression model was applied to analyse the relationship between pest damage and cropland expansion. Results showed that the percentage of cereal aphid outbreak area in wheat area increased r...
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CITATION: Zhao, Z-H., Hui, C., He, D-H. & Li, B-L. 2015. Effects of agricultural intensification on ability of natural enemies to control aphids. Scientific Reports, 5:8024, doi:10.1038/srep08024.
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