论文部分内容阅读
在对谢高地等的生态系统服务价值系数进行修正的基础上,分析了1996-2008年广东省农用地变化所引起的农业生态系统服务价值变化,并应用相关性分析方法探讨了农业生态系统服务价值变化与影响农用地变化的总人口、GDP、城市化水平、第一产业比重、社会固定资产投资总额5个社会经济驱动因子之间的关系。结果表明:①1996-2008年间,尽管园地、水域的生态系统服务价值明显增加,但广东省农业生态系统服务价值以林地为主,其次为农田,林地和农田面积减小使其生态系统服务价值逐年减少,且林地和农田减小量大于园地和水域的增加量,从而使全省农业生态系统服务总价值在13年间降低了23.11×108元;②农业生态系统服务价值变化与总人口、GDP、城市化水平和社会固定资产投资总额之间存在极为显著的负相关关系,相关系数分别为-0.965、-0.887、-0.896、-0.883。农业生态系统服务价值变化与第一产业比重之间呈显著的正相关关系,相关系数为0.972。
On the basis of amending the ecosystem service value coefficient of Xiegao land and so on, this paper analyzes the change of agricultural ecosystem service value caused by the change of agricultural land in Guangdong province from 1996 to 2008, and uses the correlation analysis method to discuss the agro-ecosystem service The relationship between the change of value and the five socio-economic drivers that affect the total population, GDP, urbanization level, the proportion of primary industry and the total investment in fixed assets in agriculture, which affects the change of agricultural land. The results showed that: ①In 1996-2008, although the service value of ecosystem services in the garden and water areas increased significantly, the service value of agro-ecosystem services in Guangdong Province was dominated by forestland, followed by farmland, and the decrease in the area of forestland and farmland made the value of ecosystem services year by year The total value of agro-ecosystem services in the province has been reduced by 23.11 × 108 Yuan in 13 years; ② The changes in the value of agro-ecosystem services and the changes in the total population, GDP, There is a significant negative correlation between the level of urbanization and the total investment in social fixed assets, with correlation coefficients of -0.965, -0.887, -0.896 and -0.883, respectively. The value of agroecosystem services has a significant positive correlation with the proportion of primary industry, with a correlation coefficient of 0.972.