The Effect of Landscape Composition on the Abundance of Laodelphax striatellus Fallén in Fragmented Agricultural Landscapes

Zhanyu Liu, Jiquan Chen, Jiaguo Qi, Ranjeet John, Jiaan Cheng and Zengrong Zhu
Additional contact information
Zhanyu Liu: Institute of Remote Sensing and Earth Science, Hangzhou Normal University, Hangzhou 311121, China
Jiquan Chen: Center for Global Change and Earth Observation, Michigan State University, East Lansing, MI 48823, USA
Jiaguo Qi: Center for Global Change and Earth Observation, Michigan State University, East Lansing, MI 48823, USA
Ranjeet John: Center for Global Change and Earth Observation, Michigan State University, East Lansing, MI 48823, USA
Jiaan Cheng: State Key Laboratory of Rice Biology/Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China
Zengrong Zhu: State Key Laboratory of Rice Biology/Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China

Land, 2016, vol. 5, issue 4, 1-13

Abstract: The spatial distribution of crop and non-crop habitats over segmented agricultural landscapes could be used as a means to reduce insect pest populations. Seven land cover categories such as wheat, rapeseed, vegetable, water, built-up, paved road, and unsurfaced road were extracted from GeoEye satellite images dating from late May to late June of 2010. Three diversity metrics and three evenness metrics were estimated from the abovementioned land cover categories for quantifying the effect of landscape composition on nymphal and adult Laodelphax striatellus Fallén. The degree of correlation between the proportion of crop cover and adjacent spatial scales ( r : 0.651–0.983) was higher than the correlation between the proportion of crop cover and nonadjacent spatial scales ( r : −0.255–0.896). While the degree of correlation between diversity indices and abundance of L. striatellus decreased gradually when the spatial scales varied from large (>100 m radius buffer) to small (<100 m). Our study suggests that when using natural biological pest control and ecological engineering practices in the rural-urban fringes, the crop field’s width should be less than 200 m and increasing vegetation diversity within such a scale will be helpful to regulate the insect pests under a certain density.

Keywords: paddy rice; small brown planthopper; satellite remote sensing; landscape metrics; fragmented agricultural landscapes (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2073-445X/5/4/36/pdf (application/pdf)
https://www.mdpi.com/2073-445X/5/4/36/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jlands:v:5:y:2016:i:4:p:36-:d:81617

Access Statistics for this article

Land is currently edited by Ms. Carol Ma

More articles in Land from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().