All Categories : Technical Papers : 2014 ASPRS Louisville Proceedings Bookmark and Share

Title : The Long-Term Hydrological Impact Assessment of Land Use and Land Cover Changes Using L-Thia Model in the Qinhuai River Watershed of Jiangsu Province, China
Company : Nanjing University, China
File Name : Du.pdf
Size : 248343
Type : application/pdf
Date : 21-May-2014
Downloads : 3

Rate This File
5 Stars
4 Stars
3 Stars
2 Stars
1 Star

Authors: Jinkang Du, Caili Li, and Shunfu Hu

This study examined the effects of land use and land cover changes due to urbanization on the annual direct runoff of the Qinhuai River Watershed in Jiangsu Province, China. Landsat Thematic Mapper (TM) images from 1988, 1994, 2006, Enhanced Thematic Mapper Plus (ETM+) images from 2001 and 2003, and China-Brazil Earth Resources Satellite (CBERS) image from 2009 were used to obtain historical land use and land cover maps. These maps revealed that the watershed experienced conversion of approximately 16% non-urban area to urban area between 1988 and 2009. The Long-Term Hydrological Impact Assessment (L-THIA) model was used to calculate direct runoff generation. The model was calibrated and validated using observed daily stream flow data collected at the outlets of the watershed, and then repeatedly run with different urbanization scenarios to investigate the hydrological response to land use changes. The simulation results of L-THIA model for the various urbanization scenarios indicate that when the impervious surface area changed from 3.4% of 1988 scenario to 20.5% of 2009 scenario, the average annual direct runoff depth would increase from 355 mm to 496 mm. The results also indicate that the annual direct runoff depth is highly correlated with the percentage of impervious surface area. When impervious surface area is less than 9.0%, the annual direct runoff depth will increase linearly with impervious surface area (R2=0.97); however, when impervious surface area is greater than 9.0%, the annual direct runoff depth will also increase linearly with impervious surface area (R2 = 1.00) but at much lower rate.
User Reviews More Reviews Review This File
A good paper. However, the conclusion may be limited to the watershed they studied. - Junshan Su - Report As Inappropriate

Featured Video
GIS Specialist for Fresno Irrigation District at Fresno, CA
Geospatial Analyst/Programmer for LANDIQ at Sacramento, CA
Division Engineer for Montana Dept. Of Commerce at Helena, MT
Geospatial Systems Administrator for BAE Systems Intelligence & Security at arnold, MO
Avionics System Engineer for BAE Systems Intelligence & Security at Arlington, VA
Senior Mechanical Engineer for BAE Systems Intelligence & Security at Arlington, VA
Upcoming Events
Webinar: What's New in Global Mapper v19.1 at United States - Feb 27, 2018
2018 Esri Developer Summit at Palm Springs Convention Center Palm Springs CA - Mar 6 - 9, 2018
Gi4DM 2018: GeoInformation for Disaster Management at Suleyman Demirel Cultural Center Maslak Campus of Istanbul Technical University (ITU) Istanbul Turkey - Mar 18 - 21, 2018
2018 GIS/CAMA Technologies Conference at Hyatt Regency Houston Houston TX - Mar 19 - 22, 2018
Teledyne Optech
GEOINT2018 - Countless CAD add-ons, plug-ins and more.

Internet Business Systems © 2018 Internet Business Systems, Inc.
25 North 14th Steet, Suite 710, San Jose, CA 95112
+1 (408) 882-6554 — Contact Us, or visit our other sites:
AECCafe - Architectural Design and Engineering EDACafe - Electronic Design Automation TechJobsCafe - Technical Jobs and Resumes  MCADCafe - Mechanical Design and Engineering ShareCG - Share Computer Graphic (CG) Animation, 3D Art and 3D Models
  Privacy PolicyAdvertise