DocumentCode :
2437660
Title :
Comparative Study on LUCC and CLID of Zhangjiagang, Hanoi and Dehradun in the developing countries of Asia-Pacific region: A real challenge to food security
Author :
Zhang, Jie ; Li, Jianlong ; Chen, Yizhao ; Yang, Qi ; Gang, Chengcheng ; Odeh, Inakwu O A ; Zou, Xinglong
Author_Institution :
Sch. of Life Sci., Nanjing Univ., Nanjing, China
fYear :
2011
fDate :
24-26 June 2011
Firstpage :
172
Lastpage :
175
Abstract :
Three cities with different degrees of urbanization in developing countries of Asia-Pacific region are selected as the study areas, They are Zhangjiagang city in China, Dehradun in India and Hanoi in Vietnam. In this paper, data was collected concluding nearly a decade of remote sensing data, population, economic data and other relevant information. We studied land-use and land-cover change (LUCC) and cultivated land instability degree (CLID) of three cities by the means of spatial analysis and CA model analysis supported by the 3S technology. The results show that: All three cities have significant land use/land cover (LULC) changes under the background of urbanization over the past decade, mainly in the increase of urban land and reduction of agricultural land. The changes of Dehradun is the greatest, Hanoi second, and Zhangjiagang city is the smallest; The CLID value shows the pressure size of transformation for the cultivated land in Zhangjiagang, Dehradun and Hanoi. Among three cities, the pressure of cultivated land in Dehradun is the greatest. Hanoi is the second, the minimum is Zhangjiagang. Facing the changes, rapid urbanization is increasing the risk of food security. Local government should make positive policy to the challenge of decreasing availability of cultivated land and offer unremitting efforts towards the goal of food security.
Keywords :
agriculture; government policies; remote sensing; Asia-Pacific region; CA model analysis; CLID; Dehradun; Hanoi; LUCC; Vietnam; Zhangjiagang; agricultural land; cultivated land instability degree; food security; government policy; land-use and land-cover change; remote sensing data; spatial analysis; urbanization; Agriculture; Biological system modeling; Cities and towns; Earth; Remote sensing; Satellites; Security; 3S Technology; CLID; Food Security; LUCC; Modified CA Model;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Remote Sensing, Environment and Transportation Engineering (RSETE), 2011 International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-9172-8
Type :
conf
DOI :
10.1109/RSETE.2011.5964243
Filename :
5964243
Link To Document :
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