Evaluation of oasis stability in the lower reaches of the Tarim River

Oasis stability in the lower reaches of the Tarim River was assessed at the landscape scale (including changes in landscape pattern and land use in the oasis) and at the regional scale (including the cold-island effect and NDVI of the oasis) based on the methods of landscape ecology, GIS and Remote Sensing (RS). Thematic Mapping (TM) remote sensing images from 1990, 2000 and 2009 were employed along with the related meteorological and hydrological data pertaining to the reclamation area of the oasis in the lower reaches of the Tarim River. The results indicated that landscape heterogeneity and oasis com- plexity increased between 1990 and 2000. The comprehensive index of the degree of land use, the aver- age index of the cold-island effect, NDVI value and oasis stability all decreased. However, the change trends in the indices referred to above were opposite between 2000 and 2009, and oasis stability was en- hanced to some extent.

[1]  J. Bruce.  Impact of climate change , 1995, Nature.

[2]  D. Massart,et al.  Sequential projection pursuit using genetic algorithms for data mining of analytical data. , 2000, Analytical chemistry.

[3]  Marian Kotas,et al.  Application of projection pursuit based robust principal component analysis to ECG enhancement , 2006, Biomed. Signal Process. Control..

[4]  Jing Ding,et al.  Projection pursuit cluster model and its application in water quality assessment. , 2004, Journal of environmental sciences.

[5]  D. Xiao,et al.  Ecological function regionalization of fluvial corridor landscapes and measures for ecological regeneration in the middle and lower reaches of the Tarim River, Xinjiang of China , 2010 .

[6]  Of Ecology.  STUDY ON OASIS REGIONAL SYSTEM AND THE SPATIAL ENVELOPMENT , 1999 .

[7]  S. Goward,et al.  Global Primary Production: A Remote Sensing Approach , 1995 .

[8]  M. Ma,et al.  [Landscape changes of Minqin oasis in Gansu Province and its driving force]. , 2003, Ying yong sheng tai xue bao = The journal of applied ecology.

[9]  Z. Zhu,et al.  Regional nitrogen budgets for China and its major watersheds , 2002 .

[10]  W. Zhong-jing.  Stability analysis of oasis in arid region , 2002 .

[11]  Keiichi Ohta,et al.  Assessment of groundwater contamination by nitrate leaching from intensive vegetable cultivation using geographical information system. , 2004, Environment international.

[12]  Chen Yaning,et al.  The Influence of Groundwater on Vegetation in the Lower Reaches of Tarim River,China , 2003 .

[13]  Lei Lu,et al.  Processes and trends of the land use change in Aksu watershed in the central Asia from 1960 to 2008 , 2010 .

[14]  Henri Caussinus,et al.  Exploratory Projection Pursuit , 2010 .

[15]  Zhang Zhi-hui,et al.  Study on vegetation ecological water requirement in Ejina Oasis , 2007 .

[16]  Guy Littlefair,et al.  Free Search - a comparative analysis , 2005, Inf. Sci..

[17]  Raymond M. Wright,et al.  Numerical classification applied to certain Jamaican eocene nummulitids , 1971 .

[18]  Q Fu.  Application of Projection Pursuit Evaluation Model Based on Real-Coded Accelerating Genetic Algorithm in Evaluating Wetland Soil Quality Variations in the Sanjiang Plain, China , 2003 .

[19]  Zhenyao Shen,et al.  Projection pursuit cluster model based on genetic algorithm and its application in Karstic water pollution evaluation , 2006 .

[20]  John W. Tukey,et al.  A Projection Pursuit Algorithm for Exploratory Data Analysis , 1974, IEEE Transactions on Computers.

[21]  Jean-Philippe Gastellu-Etchegorry,et al.  Relating the Global Vegetation Index to net primary productivity and actual evapotranspiration over Africa , 1993 .

[22]  Jikun Huang,et al.  Pesticide productivity, host-plant resistance and productivity in China , 1998 .

[23]  J. Friedman.  Exploratory Projection Pursuit , 1987 .

[24]  D. Han,et al.  Recent progress of research on Oasis in China , 1999 .

[25]  Luo Geping,et al.  Process of Land Use/Land Cover Change in the Oasis of Arid Region , 2003 .