三江源草地生态系统服务价值评估  

EVALUATION OF THE GRASSLAND ECOSYSTEM SERVICES IN THE SOURCE REGION OF THREE RIVERS

作　　者：何晓燕[1] HE Xiao-yan(Economic Research Institute of Qinghai,Xining Qinghai 810008,China)

机构地区：[1]青海经济研究院,青海西宁810008

出　　处：《青海草业》2021年第3期29-36,共8页Qinghai Prataculture

摘　　要：基于Costanza和联合国千年生态系统评估成果,构建了三江源草地生态系统服务估算体系,包括食物生产,水源涵养、气候调节、大气调节、控制侵蚀与土壤保持、废弃物降解、养分循环、生物多样性保护,提供美学景观9种服务,并从物质量和价值量两个方面进行价值估算。结果显示:以物质量表示的生态系统服务价值受时间节点和价格因素的影响较少,不论是纵向还是横向都更具有可比性,食物生产量、水源涵养量、固碳释氧量、泥沙淤积和废弃土地减少量等与其他研究成果一致性;以价值量表示的草地生态系统服务总价值为2825.30亿元,对维持地区生态平衡意义重大,其中气候调节价值占比最大,超过总价值的50%。The grassland ecosystem services system in the Source Region of Three Rivers was constructed in the paper, based on the research production of Costanza and MA. The system included food production, water conservation, climate regulation, gas regulation, erosion control and soil retention, waste degradation,nutrient regulation, biodiversity conservation and landscape aesthetics. The methods of the value assessment were combined of material and value calculation. The results showed that: the value of ecosystem services expressed by material almost unaffected were less affected by time and price, which could be compared with other research results both vertically and horizontally;the amount of food production, water conservation, carbon fixation, oxygen release, reduce siltation and reduce waste land were consistent with other results;the economic value of ecosystem in the study area was 2825.30×108 yuan in 2012,it played an important role in maintaining ecosystem balance;in addition, the proportion of climate regulation in the total value was highest, which was more than 50%.

关 键 词：三江源 草地 生态系统服务 价值评估 

分 类 号：S812[农业科学—草业科学]