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Title
The 3rd ISPRS Workshop on Dynamic and Multi-Dimensional GIS & the 10th Annual Conference of CPGIS on Geoinformatics
Author
Chen, Jun

ISPRS, Vol.34, Part 2W2, “Dynamic and Multi-Dimensional GIS , Bangkok, May 23 25, 20CM
ISPRS, Vol.34, P
42
Fig. 5 Slope of the study area
Our study demonstrates the feasibility and utility of interfacing
terrain-analysis technique with existing pesticides losses runoff
models. By using the capabilities of terrain analysis in modeling
processes directly impacted by terrain characteristics, a more
realistic description of these processes is possible. When
working with processes that must consider such properties as
flow direction and contributing area, as is the case with
hydrologic and soil erosion models, quick, accurate
representation of the terrain is especially important. As
computer capabilities continue to improve, terrain analysis
undoubtedly will play an increasing role in hydrologic and water
quality modeling for pesticides losses control.
At present, we are working on the further analysis of hydrologic
characteristics by the G IS and remote sensing techniques. New
4m spatial resolution IKONOS multispectral images will be
used to extract thematic information, while 1m resolution
IKONOS panchromatic images to generated DEMs. Particularly,
some index or parameters of the soil used in the pesticides
losses runoff model can be derived by automated classification
of IKONOS multispectral imagery. Future investigations in this
project include:
• Adding vegetation analysis, such as crops and
forests, to the pesticides model for considering the
canopy effects on the pesticides losses;
• Developing new algorithm for high accuracy of DEM
interpolation, or modify the existed algorithm to well
suit for the pesticides control system;
• Data connection with the pesticides losses runoff
model and terrain analysis of the GIS and remote
sensing;
• Enhancing the display function of the GIS and remote
sensini
showin
relative
providii
enviror
CONCLUSIONS
This paper has
analysis method
pesticides losses
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Comparing with
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advantage of inte
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For the project i;
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use terrain analy
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the efficiency m,
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pesticides losse
pesticides load
Further studies ;
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the use of the
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parameters of th
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