Dynamic Monitoring and Driving Force Analysis on Rivers and Lakes in Zhuhai City Using Remote Sensing Technologies
| Autor: | Liu Yanan, Qiao Yuliang, Zhong Yue |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Hydrology
Agricultural irrigation geography geography.geographical_feature_category Wetland remote sensing Force analysis freshwater resources Thematic map Land reclamation Dynamic monitoring Remote sensing (archaeology) General Earth and Planetary Sciences Environmental science Freshwater resources rivers and lakes dynamic monitoring General Environmental Science Remote sensing |
| Zdroj: | Procedia Environmental Sciences. 10:2677-2683 |
| ISSN: | 1878-0296 |
| Popis: | The rivers and lakes are not only important parts of the wetland, but the main agricultural irrigation water and important freshwater resources. The changes of the rivers and lakes have heavy effect on the environment and economy. Taking Zhuhai City as the study area, selecting the rivers and lakes as research object, using the Landsat5 TM data in 1995, Landsat7 ETM + data in 2002, CBERS-02B CCD and HR data in 2009 as the main information source, this paper makes an remote sensing interpreation using the combined method of the supervised classification, non-supervised classification, man-computer interactive interpretation and rule-decision classification. Thus, the thematic information of the rivers and lakes are extracted at the three phases in Zhuhai City; then the spatial distribution pattern and dynamic change rules of the rivers and lakes in Zhuhai City are monitored; finally, the driving force of these changes are analyzed. The results show: the area of the rivers increased 6% from 1995 to 2009; but to the lakes, decreased 58%. The increase of the rivers area is because reclamation projects cause the big change of the sea-land position; whereas the decrease of the lakes area is due to the factors such as the warming climate and increasing populaiton. |
| Databáze: | OpenAIRE |
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