Effect of woodlots on thrips density in leek fields: a landscape analysis

被引：26

作者：

den Belder, E ^{[1
]}

Elderson, J ^{[1
]}

van den Brink, WJ ^{[1
]}

Schelling, G ^{[1
]}

机构：

[1] Plant Res Int, Business Unit Crop & Prod Ecol, NL-6700 AA Wageningen, Netherlands

来源：

AGRICULTURE ECOSYSTEMS & ENVIRONMENT | 2002年 / 91卷 / 1-3期

关键词：

onion thrips; leek; woodlots; insect density; agricultural landscapes; GIS; The Netherlands;

D O I：

10.1016/S0167-8809(01)00264-X

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

The effect of woodlots, natural areas and agricultural land in the landscape on a generalist herbivore insect species in cropland was investigated. The abundance of onion thrips (Thrips tabaci) was compared in leek (Allium porrum) fields in 43 agricultural landscape plots of different sizes in The Netherlands. The total area of woodlots, other natural and agricultural areas within a radius of 1000 and 5000 m around each field was measured using a geographic information system (GIS) framework, LGN3plus. Numbers of onion thrips were significantly lower in leek fields in agricultural landscapes with a larger total area of woodlots. The results suggest that woodlots decrease density of onion thrips and their symptoms in leek fields. Possible mechanisms are discussed. (C) 2002 Elsevier Science B.V. All fights reserved.

引用

页码：139 / 145

页数：7

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