Dynamic Analysis of Siberian Silkmoth Outbreak in Mountain-taiga Forest Based on Satellite Data

被引：0
|
作者：
Im, S. T. [1 ]
Kharuk, V. I. [1 ]
Ranson, K. J. [2 ]
机构：
[1] RAS, VN Sukachev Inst Fores, SB, Krasnoyarsk, Russia
[2] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
来源：
FOREST SCIENCE AND TECHNOLOGY | 2007年 / 3卷 / 01期
关键词：
pest outbreaks; Siberian silkmoth; monitoring; remote sensing;
D O I：
10.1080/21580103.2007.9656313
中图分类号：
S7 [林业];
学科分类号：
0829 ; 0907 ;
摘要：
Siberian silkmoth outbreaks in taiga forest were monitored based on SPOT-Vegetation satellite data to create a 3D, high-resolution relief model. The temporal and spatial dynamics of a pest outbreak in the Sayan Mountains (Siberia) were analyzed. A good agreement was found between on-ground and remotely obtained data in the outbreak area. The outbreak began at an elevation of similar to 420-500 m (Ed-but in the conclusion you have "of similar to 400-540 m"; which is correct?) with slope steepness up to 5 degrees (Ed-but in the discussion you have 4 degrees; which is correct?). The outbreak in its development spread to an elevation range of similar to 450-540 (Edbut in the discussion you have "of similar to 400-540 m"; which is correct?) m with slope steepness up to 15 degrees. A "splitting effect" (bimodality) of elevation distribution was observed, due to exhaustion of the silkmoth initial food base and insect spreading to neighboring territories on the upward and downward slopes.
引用
收藏
页码：10 / 16
页数：7
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