中文摘要：

以珠江三角洲1990、2000和2006年的遥感解译数据为基础,参照谢高地等对中国陆地生态系统单位面积生态服务价值表,研究珠三角土地利用变化对生态系统服务价值的影响以及生态服务价值与土地利用结构的关系。结果表明：1990―2006年,珠三角耕地和林地大量减少,建设用地和水域快速增长,其它地类有所增加;研究区发生变化的土地占土地总面积的29.38%,耕地主要流向建设用地、水域和林地,建设用地的扩张主要来自耕地、林地和水域;由于水域生态价值系数相对较高,水域的增加抵消了由耕地、林地减少造成的生态服务总价值的下降,使得区域生态服务总价值略有减少;珠三角生态系统服务价值由1990年874.38亿元减至2006年的846.47亿元,变化率为3.19%;研究区内单位生态服务价值差异明显且逐渐扩大;单位生态服务价值与建设用地、林地、耕地所占比重明显相关,建设用地快速扩张,林地和耕地减少是导致生态服务价值减少的主要原因。

英文摘要：

The land use change and its effects on ecosystem service value （ESV） in the rapidly developed region of the Pearl River Delta from 1990 to 2006 are analyzed, and the relationship between ESV and land use structure is researched. The methods used in the paper are based on the ESV computing formula and ESV coefficients of the land ecosystems in China advanced by Xie Gaodi et al. The results show that： from 1990 to 2006, the area of cultivated land and forests decreased evidently, while construction land and water bodies increased intensively, other land use types slightly increased. The area of the changed land accounted for 29.38% of the total land area. Cultivated land was mainly turned into construction land, water bodies and forests. As the value coefficients of water bodies were comparatively big, the increment in water bodies, to a certain degree, offsetted the total decrement in regional ecosystem service values due to the decrease of the area of cultivated land and forests, and so the total ESV of the Pearl River Delta only reduced a little, namely, from RMB 874.38×108 to RMB 846.47×108 in the period, or a 3.19% decrease for the studied region. The difference of the per unit ESV between different areas was obvious, and it still continued expanding. In 1990, the biggest unit ESV, which was 271.57×105 yuan/km2 , was in Shunde, while the smallest, 110.17×105 yuan/km2; in Foshan District. In 2006, the biggest, 247.30×105 yuan/km2, in Sanshui, while the smallest, 52.28×105 yuan/km2, in Foshan District. The per unit ESV had significant relation to the percentage of the area of construction land, forests and cultivated land. The decrease of the ecosystem service values was mainly responsible to the dramatic expansion of construction land and the reduction of forests and cultivated land.