珠江三角洲东部地区常平镇景观组分转移模式及动态变化研究

A LANDSCAPE STUDY OF ELEMENT TRANSFERRING PATTERN AND CHANGING STAGE OF CHANGPING TOWN IN EASTERN PART OF ZHUJIANG DELTA AREA

对常平镇１９８８～１９９６年期间景观组力转移情况和动态变化进程进行了研讨，重点分析非农用建设用地的主要来源，自然和农业组分向城镇转移的基本模式和景观动态变化的主要阶段。研究结果表明，常平镇城镇用地规模不断膨胀的主要来源依次是农田、果园和水体，林地受地形影响，转移量最少；自然和农业组分向城镇转移主要有直接和间接两种模式，直接模式是组分转移的主要方式；全镇过去８年的景观动态变化过程可分３个阶段，即１９８８～１９９１年传统农业景观阶段，１９９２～１９９４年城乡混合景观阶段和１９９６年城镇景观阶段。

Based on multi time remote sensing and landscape pattern analysis, we used transferring matrix as main analyzing tool to study the element transferring condition and landscape changing course of Changping town from 1988 to 1996. The most important problems that we studied were the main source of non agricultural construction area coming from, transferring pattern of natural and agricultural elements to town, and landscape changing stages. The results indicated that 1) most new construction area came from arable land, orchard and water area, the transferring amounts were 1460 ha, 660 ha and 330 ha respectively. Because of geomorphologic impact, there was only 70ha of woodland that was changed to town area. 2) There were two kinds of transferring pattern, direct and indirect, to change natural and agricultural elements to construction area. The direct transferring pattern was the chief changing way, and more than 80% of new increasing town area came from this way. 3) The landscape changing course of Changping town during past 8 years could be divided into three stages, which were agricultural stage (1988 to 1991), town and county mixed stage (1992 to 1994), and town stage(1996). 4) Human disturbance was the driving force of landscape changing in Changping town, and high speed and large changing scale were main characteristics of its landscape dynamics.