Based on land-use data collected every five years from 1990 to 2010, we quantified land-use dynamics and resultant effects on the ecosystem services along urban-rural gradients of the Guangzhou-Foshan Metropolitan Area, South China. The urban-rural gradients were set around the urban core cohesion zone with a 10-km-wide buffer zone and the value of each ecosystem service was calculated using a well-established benefit transfer method. The areas of construction land, water body and orchard expanded, while cropland, forestland and unused land contracted. The total value of ecosystem services decreased by US$ 200.33 million (or 4.3%) from 1990 to2010. Along the urban-rural gradients, the average value supplied by cropland, orchard and water body generally demonstrated a ‘first-rise-then-fall’ trend, while forestland and construction land presented an ever-increasing trend. For individual ecosystem services, raw material, gas regulation, climate regulation, soil formation and retention, biodiversity protection, recreation and culture increased steadily along the urban-rural gradients, while food production showed a fluctuating ‘first-rise-then-fall’ trend; water conservation and waste treatment increased from the core cohesion zone to the third concentric ring, and then had a sudden surge in the seventh concentric ring in both 2005 and 2010.

基于1990年至2010年每5年收集的土地利用数据，我们定量分析了华南广佛都会区沿城乡梯度变化的土地利用动态及其对生态系统服务的影响。在具有10公里宽缓冲区的城市核心凝聚力区域周围设置城乡梯度，并使用完善的收益转移方法计算每种生态系统服务的价值。的地区建设用地，水体和果园扩大的同时，耕地，林地和未利用地收缩。从1990年到2010年，生态系统服务的总价值下降了200.33百万美元（或4.3％）。沿着城乡梯度，由耕地，果园和水体总体上呈现“先升后跌”的趋势，而林地和建设用地则呈现出不断增长的趋势。就个别生态系统服务而言，原材料，气体调节，气候调节，土壤形成和保留，生物多样性保护，娱乐和文化沿城乡梯度稳步增长，而粮食生产则呈现出“先升后跌”的波动趋势。 ; 节水和废物处理从核心凝聚区增加到第三同心环，然后在2005年和2010年突然在第七同心环激增。