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Proceedings Paper

Critical controlling of PRED system of oasis ecology in the arid region of central Asia: a case study of Keriya River Valley oases, Xinjiang
Author(s): Rui Chen; Jiaqi Liu; Wenyuan Niu; Xiangzheng Deng; Guijin Mu; Mayke Wagner; Karl Geldmacher
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Paper Abstract

Oases is a special ecosystem formed in arid climate and hungriness environment, in which resident, water and soil are the principal factor and exchanges of materials, energy and information are the main functional characteristics. The oases regions in central Asia are not only the basilic cradle of civilization of human beings, but also the important strategic places in world growing awareness of the potential benefits. We choose Keriya River Basin oases in south of Xinjiang as a case to study critical controlling of Oases Evolution, Based on the theories and methods used for environmental geology, physical geography, land resource research, and oases ecology. This study try to indicate the essential factors driving the oases ecosystem and the interactional dynamic mechanism in different scales and levels, confirm the optimal equilibrium aggregate of harmonious development between Population, Resources, Environment and Development, and establish the critical controlling pattern of sustainable development. We advance the indicator system to research the evolution of the PRED System of oases in Keriya River valley oases, in basis of the information derived from the field investigation and local materials. According to inquisitional result based on technical support of Geographic Information System (GIS) and Remote Sense (RS), the comparisons and analyses are carried out in land use at the upper reaches, vegetation change in the middle reaches, and desertification at the lower reaches, which narrates the regulations of Keriya River Valley oases land cover dynamic change. The main land cover types represent distinct characteristics of the local place. On the basis of field survey and statistical data, we use ARCINFO software to preprocess these data and the 2 TM satellite images. Through analyzing these images resulting from post-classification compare, we sums up the concrete quantificational dynamic distributed data of 13 land types covering a span of 15 years and regulation of the local ecological environment system. It finally points out that the trend of Keriya River Valley oases desertification expansion is mainly related to two important reasons: impact of natural environment and impact of human activities. In order to improve the local ecological environment, people inhabited this

Paper Details

Date Published: 14 July 2003
PDF: 14 pages
Proc. SPIE 4890, Ecosystems Dynamics, Ecosystem-Society Interactions, and Remote Sensing Applications for Semi-Arid and Arid Land, (14 July 2003); doi: 10.1117/12.466176
Show Author Affiliations
Rui Chen, Institute of Policy and Management, CAS (China)
Jiaqi Liu, Institute of Geology and Geophysics, CAS (China)
Wenyuan Niu, Institute of Policy and Management, CAS (China)
Xiangzheng Deng, Institute of Geographic Sciences and Natural Resources Research, CAS (China)
Guijin Mu, Xinjiang Institute of Ecology and Geography, CAS (China)
Mayke Wagner, German Institute of Archaeology (Germany)
Karl Geldmacher, Potsdam Univ. (Germany)


Published in SPIE Proceedings Vol. 4890:
Ecosystems Dynamics, Ecosystem-Society Interactions, and Remote Sensing Applications for Semi-Arid and Arid Land
Xiaoling Pan; Wei Gao; Michael H. Glantz; Yoshiaki Honda, Editor(s)

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