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[1]HUANG Hui-ping,ZHANG Cen.LUCC and Analysis of Water Resources Effect in Arid Area—A Case of Ganzhou District, Zhangye, Gnasu Province[J].Research of Soil and Water Conservation,2009,16(04):270-274.

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LUCC and Analysis of Water Resources Effect in Arid Area—A Case of Ganzhou District, Zhangye, Gnasu Province

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 16 Number of periods: 2009 04 Page number: 270-274 Column: Public date: 2009-08-20

Title:: LUCC and Analysis of Water Resources Effect in Arid Area—A Case of Ganzhou District, Zhangye, Gnasu Province

Author(s):: HUANG Hui-ping¹, ZHANG Cen²; 1. North China Institute of Water Conservancy and Hydroelectric Power, Zhengzhou 450011, China;
2. Pinggang Middle School of Shenzhen, Shenzhen, Guangdong 518116, China

Keywords:: 3S; LUCC; qualitative; and; quantitative; analysis; of; water; resource; Ganzhou; district; of; Zhangye

CLC:: F301.24;P271

DOI:: -

Abstract:: The data of Ganzhou land use changes were extracted from RS data of TM and ETM in 1987, 2002, based on Arcinfo 9.0 of GIS software platform. The paper analyzed spatio-temporal changes of land use and its influence on water in Ganzhou during 15 years. The result showed that: the great changes took place in Ganzhou from 1987 to 2002.The areas of desertificated land, cultivated land and city/traffic land were rising, among which, the most of growing land was desertificated land, increased 6. 18×10⁴ hm² (60.2%). The secondary growing land was cultivated land. The most significant reduction of land use was grassland, shrinked 3.74×10⁴ hm² (50.92%). LUCC had altered industrial and agricultural water, exhalation of earth’s surface, soil moisture regime and surface retention, which greatly affected water resources of region. Annual runoff, flowed into this district, slightly showed ascension in Yingge gorge, but consistantly cut down in Gaoai hydrometric station that water flowed out-average 1.135×10⁸ m³ from 1987 to 1994, reduction to average 7.645 7×10⁸ m³ from 1995 to 2002.Ground water level distinctly descended-reduction 67.99% in Xingou measuring point, 47.58% in Shigangdun measuring point, which made spillover of fountain shrink and brought severe threats to sustainable development of Ganzhou district.

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