摘要
生态系统服务价值评估已成为当前生态学研究热点。陕西省横跨黄土高原、关中平原和秦巴山地,自然条件复杂多样,人类活动历史悠久,对区域社会经济的发展发挥重要的服务功能。本文基于2015年土地利用/覆盖数据,使用价值量评价法和修正后的中国陆地生态系统单位面积生态服务价值系数,估算和分析了陕西省4个生态功能区的生态系统服务价值。结果表明,陕西省的生态系统服务总价值为974亿元·a^(-1),其中秦巴山地生态区的生态服务价值达到456.92亿元·a^(-1),占全省总价值的47%,对陕西省的生态系统服务功能起着决定性作用;黄土高原生态区的生态服务价值为328.76亿元·a^(-1),占全省总价值的34%;关中平原生态区的生态服务价值为152.29亿元·a^(-1),占全省总价值的18%;而陕北风沙生态区的生态服务价值仅为36.04亿元·a^(-1)。土壤形成与保护、生物多样性保护、气体调节、水源涵养、气候调节和废物处理是陕西各生态区的主体生态服务功能。研究结果可为陕西省自然环境保护与生态系统管理提供科学依据。
Ecosystem service value evaluation has become a hotspot in ecology study.Shaanxi Province spans across the Loess Plateau,Guanzhong Plain and Qinba Mountains,with complex and diverse natural conditions and a long history of human activities,which play an important service function for regional social and economic development.Based on the land use and cover data in 2015 and using the value evaluation method and the revised ecological service value coefficient per unit area of China's terrestrial ecosystem,the ecosystem service value of 4 ecological function zones in Shaanxi Province was estimated.The result showed that the total value of ecosystem services in Shaanxi Province is 97.4 billion yuan,of which the value of ecological services in the Qinba Mountain Ecological Zone has reached 45.692 billion yuan,accounting for 47%of the total value of the province,and it plays decisive role in the ecosystem services of Shaanxi Province.The ecological service value of the Loess Plateau Ecological Zone is 32.876 billion yuan,accounting for 34%of the total value of the province;whereas the ecological service value of the Guanzhong Plain Ecological Zone is 15.229 billion yuan,accounting for 18%of the total value of the province.The ecological service value of the windy and sandy ecological zone in the north part of Shaanxi is only 3.604 billion yuan.Soil formation and protection,biodiversity protection,gas regulation,water conservation,climate regulation and waste treatment are the main ecological service functions of each ecological zone in Shaanxi.
作者
刘红彩
王纳
冯水园
富逊娣
LIU Hong-cai;WANG Na;FENG Shui-yuan;FU Xun-di(Administration Bureau of Foping National Nature Reserve,Foping,Shaanxi 723400;Shaanxi Natural Forest Protection Project Management Center,Xi'an,Shaanxi 710082)
出处
《陕西林业科技》
2020年第6期40-46,共7页
Shaanxi Forest Science and Technology
关键词
生态服务价值
生态区
陕西
Ecological services value
ecotope
Shaanxi Province