摘要
基于2005年兰州市南北两山环境绿化工程区的卫星遥感资料,应用生态系统服务评价方法,结合研究区实际情况,对研究区的城市人工森林生态系统服务价值进行评估。结果表明:①2005年研究区的人工森林生态系统总服务价值为15.59亿元.a-1;各项服务价值的顺序依次为:森林游憩>维持大气平衡>涵养水源>林副产品>固土保肥>保护生物多样性>木材>薪炭材;②城市人工森林生态系统服务价值组成上表现为经济效益(直接价值)与生态效益(间接价值)的比例相差不大,明显有异于自然生态系统,这主要是由人工生态系统的人为性和明确的目的性造成的。研究表明,城市人工生态系统对CO2减排的可持续性和生态安全具有现实意义。对积极探索西部地区的生物减排及水土资源及生态安全问题,对进行城市人工生态系统服务评价具有一定的借鉴意义。
Based on satellite remote sensing data acquired in 2005 and the ecosystem service value assessment method,the ecological service value of urban artificial forest ecosystem in south hills and north hills of Lanzhou was studied.Results indicate that the ecological service value of the urban artificial forest ecosystem study area is 15.59×108 Yuan per year.The order of service value is： recreation and ecotourismatmosphere adjustmentwater source conservationforest by-producterosion controlbiodiversity maintenancewoodfirewood.The proportion of direct and indirect economic benefits in the artificial ecosystem service value is different from that in natural ecosystem service value because the building of the ecosystem is artificial and purposive.The research is quite important in theory and reality for the assessment of the urban artificial forest ecosystem service value,and would be helpful to realize sustainable development and environment protection in western China.
出处
《中国沙漠》
CSCD
北大核心
2012年第1期219-225,共7页
Journal of Desert Research
基金
国家科技支撑计划项目(2011BAC01B04)资助
