| Analysis of LUCC of the first county — Zaduo County in the source area of Lancangjing River |
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| DOI：10.7606/j.issn.1000-7601.2008.03.47 |
| Key Words: LUCC spatial-temporal pattern GIS source area of Lancangjiang River Zaduo County |
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| Abstract: |
| uantity but the characters during the t wo periods of 1985～1995and 1995～2000were obviously different ．（2） During the period of 1985～1995 the total land －diversion amount was 5954．00km2 accounting for 16．47％ of the total land amount in Zaduo County ；land-diversion mainly occurred among different coverage degree grassland or bet ween grassland and non-used land accounting generally for 93．87％ of the total land-diversion amount ；another character was that the amount of grassland was increased but its quality decreased ．（3） During the period of 1985～1995 the total land-diversion amount was 6027．75km2 accounting for 16．67％of the total land amounts in Zaduo County；the mainland-diversion types were from mid or low-coverage degree grassland to nonuesd land from mid-coverage degree grassland to low-coverage degree grassland from low-coverage degree grassland to mid-coverage degree grassland and from wetland to grassland accounting for 90．87％of the total land-diversion amount ；the amount of grassland decreased but its quality increased ．At the t wo periods of 1985 ～1995 and 1995～2000 land-use diversion occurred obviously in the east S Wand west part of Zaduo County. |