粤港澳大湾区土地利用及生态系统服务价值的变化——以广佛肇为例
肖红克1,2,3, 李洪忠1,2, 王 莉3, 陈劲松1,2, 韩 宇1,2

(1.中国科学院 深圳先进技术研究院, 广东 深圳 518055; 2.深圳海洋环境信息大数据分析与应用工程实验室, 广东 深圳 518055; 3.河南理工大学 测绘与国土信息工程学院, 河南 焦作 454003)

土地利用变化; 生态系统服务价值; 敏感性指数; 粤港澳大湾区; 广佛肇

Changes of Land Use and Ecosystem Service Value in Guangdong-Hong Kong-Macao Greater Bay Area—A Case Study of Guangzhou-Foshan-Zhaoqing
XIAO Hongke1,2,3, LI Hongzhong1,2, WANG Li3, CHEN Jinsong1,2, HAN Yu1,2

(1.Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China;2.Shenzhen Engineering Laboratory of Ocean Environmental Big Data Analysis and Application, Shenzhen, Guangdong 518055, China; 3.School of Surveying & Land Information Engineering, Henan Polytechnic University, Jiaozuo, Henan 454003, China)

land use change; ecosystem services value; sensitivity index; Guangdong-Hong Kong-Macao Greater Bay Area; Guangzhou-Foshan-Zhaoqing

备注

以广州、佛山、肇庆三市整体为研究对象,基于研究区1990年、2000年、2010年、2015年遥感影像解译数据,借助于模型分析法研究了广佛肇近25年来的土地利用变化特征; 采用生态系统服务价值系数法,并结合研究区的实际情况定量估算了研究区1990—2015年不同土地利用类型的生态系统服务价值,并对其变化特征进行了分析。结果 表明:(1)1990—2015年,林地和耕地面积持续减少,人工表面用地面积逐渐增加,草地先减少后增加,湿地先增加后减少,其他用地变化相对复杂。人工表面的动态度最大,其次是其他用地。耕地转出的面积最多,人工表面转入的面积最多;(2)研究区生态系统服务价值总量呈现出先增加后逐年减少的趋势,25年间共减少了3.59亿元。林地和湿地的生态服务价值之和在总的生态服务价值中占据主导地位。耕地面积的持续下降,使其保持土壤的服务价值下降最明显;(3)各地类的敏感性系数均小于1,说明研究区生态系统服务价值对其生态服务价值系数缺乏弹性,结果可信。

Based on the interpretation data of remote sensing images of 1990, 2000, 2010 and 2015, we studied the characteristics of land use changes in Guangzhou-Foshan-Zhaoqing in the past 25 years by using the model analysis method. The ecosystem service value of different land use types in the study area from 1990 to 2015 were quantitatively estimated by using the ecosystem service value coefficient method and combining with the actual situation of study area, and its variation characteristics were also analyzed. The results showed that:(1)from 1990 to 2015, the areas of forestland and cultivated land continued to decrease, while artificial surface land increased gradually, the grassland decreased at first and then increased, while the wetland increased at first and then decreased, and the area of other land changed relatively complicated; the artificial surface had the highest degree of dynamics, followed by other land; the area of cultivated land transferred out was the most, and the area of the transferred artificial surface was the most;(2)the total value of ecosystem services in the study area showed a decreasing trend of firstly and then the decreasing trend year by year, with a total reduction of 359 million yuan in 25 years; the sum of the ecological service value of forestland and wetland dominated the total ecological service value; the continuous decline in the area of cultivated land made it the most obvious decline in the value of maintaining soil;(3)the sensitivity coefficient of each class was less than 1, showing that the value of ecosystem service in the study area lacked flexibility in its service value index, and the results were credible.