| Technology Application |
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Land Use and Land Cover Change of the Coastal Zone Around Jiaozhou Bay |
| LI Zhen 1,2, HUANG Hai-jun 1 |
1.Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;
2.Graduate University of Chinese Academy of Sciences, Beijing 100049, China |
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Abstract Land use and land cover change constitutes significant problems in the study of global environmental change. In this paper, the authors used the single decision tree method to classify two images of Landsat TM/ETM+ in 1989 and 2000 and obtained land use patterns of the coastal zone around Jiaozhou Bay. In this process, atmospheric correction and geo-knowledge study are recommended. Then through "overlay" analysis, the transfer matrix of land use can be obtained. The characteristics of land use/cover change are mainly demonstrated as follows: land for construction use such as cities and countries increases rapidly at the expense of occupying large amounts of farmland, land for marine culture and saltern expands by taking the place of some farmland and sea area; nevertheless, farmland and inland beach decrease greatly, and land for forest and grass changes very little. In the past ten years or more, human activities such as increasing the amount of waste gas, waste water and industrial residue, dumping a lot of land-sourced nutritive salt and pollutants into the Jiaozhou Bay, have exerted increasingly strong effect on ecological environment, which finds expression in the following aspects: the water of Jiaozhou Bay has deteriorated, the amount of heavy metals in sediments has increased, the population and biodiversity of plankton have decreased and harmful algal blooms have happened frequently.
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Issue Date: 02 August 2011
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2010,
Vol. 22
