[1]JIANG Liang-liang,LIU Hai-long,BAO An-ming,et al.Analysis on Landscape Pattern Change and Driving Mechanism in Manas River Watershed[J].Research of Soil and Water Conservation,2014,21(04):256-262.

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Analysis on Landscape Pattern Change and Driving Mechanism in Manas River Watershed

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 21 Number of periods: 2014 04 Page number: 256-262 Column: Public date: 2014-08-28

Title:: Analysis on Landscape Pattern Change and Driving Mechanism in Manas River Watershed

Author(s):: JIANG Liang-liang¹, LIU Hai-long¹, BAO An-ming², REN Yan-qun¹, AN Xiao-yan¹; 1. College of Water Conservancy and Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China;
2. Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China

Keywords:: Manas River Watershed; landscape pattern; human activity; climate change; Mann-Kendall test method

CLC:: F301.24

DOI:: -

Abstract:: The arid landscape pattern change and its driving mechanism analysis are of great significance on sustainable utilization of local water and land resources. Typical region of Manas River Watershed, which is dramatic exploitation and use of water and land resources in the arid area of the northwestern of China, was chosen as the study case. Based on the technique of geographical information system (GIS) and remote sensing (RS), land use analysis dispose about TM image data for study area of 1990, 2000, 2005, 2010 were to proceed. The methods of landscape ecology were used to calculate eight landscape indices, respectively, to explore the change of landscape pattern and its driving forces from class level and landscape level. The results show that: (1) the advantages of grassland and unused land in study area decrease gradually, the advantages of arable land increase gradually, landscape diversity elevates, and dominance declines, tending to the change of separation and crushing direction; (2) human activities make grassland and unused land convert to arable land, the type conversion transforms gradually from bidirectional transition to one-way transition, the change of grassland area and aggregation index presents a linear relationship, each 1% reduction in grassland area can make aggregation reduce by 0.656 7; (3) there is a clear growth on precipitation and temperature, the decline range of largest patch index for permanent glacier snow and aggregation in the first decade were all greater than later decade, which responsed the M-K trend analysis of ‘the point mutations of rainfall, temperature and runoff will concentrate around 1995’. Finally, in order to achieve the rational development of water resources, it was suggested that watershed land use patterns and water resources allocation plan should be rationally planned, and ecological water can not be occupied.

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