1Wear, John F. and W. J. Buckhorn. Organization and Conduct of Forest Insect Aerial Surveys in Oregon and Washington [M]. OR, 1955.
2Timothy J. McConnell, Erik W. Johnson, Barbara Bums. A Guide to Conducting Aerial Sketchmapping Surveys [ M ]. FHTET00 -01, 2000.
3Ministry of Forests. Aerial Overview Surveys, Forest Insects and Diseases Training Program, Participant' s Guide, version1. 1 [ M]. British Columbia Forest Service, 1997.
4USDA Forest Service Forest Health Protection. The early warning sys- tem for forest health threats in the United States ( final draft). [ EB/ OL]. (2004-07-13) [2011-05-03]. http: //www. fs. fed. us / for- esthealth/publications/EWS final-draft, pdf.
5Michael Baker Jr Inc. Document of GeoLink for windows. [ CD ]. Ridgeland, MS, USA : Michael Baker Jr Inc. ( 2001-06-05 ) [ 2011 - o5-o31.
8USDA Forest Service Forest Health Protection. The early warning sys- tem for forest health threats in the United States ( final draft). [ EB/ OL]. ( 2004-07-13 ) [2011-05-03]. http://www, fs. fed. us/for- esthealth/publications/EWS_final_draft, pdf.
9Michael Baker Jr Inc. Document of GeoLink for windows [ CD ]. Ridgeland, MS, USA : Michael Baker Jr Inc. ( 2001-06 ) [ 2011-05 - 03].
10Mosaic Mill Oy. EnsoMOSAIC image processing user' s guide : Ver- sion 7.3 [ M ]. Finland : Mosaic Mill Ltd, 2009.