摘要
近年来三江平原土地利用的变化很大,研究其生系统服务价值的变化情况,可以为区域生态环境的保护和恢复提供科学依据.参照中国陆地生态系统单位面积服务价值表,利用三江平原两期土地利用数据,估算了土地利用变化引起的生态系统服务价值的变化.结果表明,1980～2000年三江平原耕地、城镇用地和水域面积有所增加,其余类型面积减少.其中耕地面积增加了30.70%;湿地面积减少了53.37%,该区域人文景观的影响已超过了自然景观.1980～2000年三江平原生态系统服务价值损失了538.87×108元,损失幅度为28.62%.大面积湿地转化为农田是生态系统服务价值大幅度下降的主要原因.
There were severe variations in land use of Sanjiang Plain, China in recent years. Studies on the variation state of its ecosystem service value could supply scientific basis for protection and restoration of regional eco-environment with referring to the table of Chinese land ecosystem services value of unit area and utilizing the two-period data of land use in Sanjiang Plain, changes of the values of ecosystem services caused by land use change were estimated. There was some increase in area of cultivated land, city and town land, and water body, and decrease in area of other categories of Sanjiang Plain from 1998 to 2000, in which the area of cultivated land increased 30.70%; the area of wetland decreased 53.37% oppositely; and influence of artificial landscape was superior to that of natural landscape. Values of Sanjiang Plains ecosystem services lost 538.87108yuan with an extent of 28.62%. The main reason that the values of ecosystem services of Sanjiang Plain reduced to big extent was the large-area transformation from wetlands to croplands.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2004年第1期125-128,共4页
China Environmental Science
基金
中国科学院知识创新工程信息化专项基金(INF105-SDB- 1-24)
