%0 Journal Article
%T Flow Processes of Forest Ecosystem Services<br>森林生态系统服务流量过程研究
%A LI Shimei
%A XIE Gaodi
%A ZHANG Caixia
%A GE Liqiang
%A <br>李士美
%A 谢高地
%A 张彩霞
%A 盖力强
%J 资源科学
%D 2010
%I 
%X Ecosystem services have become a hot topic in the ecological and ecological economics community. Still, few studies have been performed to explore flow processes through which annual economic value of ecosystem services are delivered; inadequate observations at local and regional scales significantly limit the studies. In the present paper, the authors estimated the flow processes of four typical ecosystem services delivered by Qianyanzhou plantation ecosystems based on 3-year observational data obtained from Chinese Ecosystem Research Network (CERN) and Chinese Terrestrial Ecosystem Flux Research Network (ChinaFLUX) by means of simulations. Results showed that economic value of biomass production, gas regulation, water conservation, soil conservation were 497.48±33.66 yuan/(hm2·a), 2189.21±247.18 yuan/(hm2·a), 1432.40±454.32 yuan/(hm2·a) and 224.55±8.82 yuan/(hm2·a), respectively. There existed apparent seasonal variation trends in the flows of the four ecosystem services. It was found that the flow processes of biomass production service, gas regulation service and water conservation service appeared to be continuous curves, whereas the flow processes of soil conservation services exhibited a discrete distribution. The flows of biomass production service generally ranged from 0.14 yuan/(hm2·d) to 3.37 yuan/(hm2·d), the flow of gas regulation service ranged from -22.64 yuan/(hm2·d) to 28.77 yuan/(hm2·d), and the ecosystems delivered positive gas regulation services for more than 280 days within a year. The forest ecosystems delivered both positive and negative water conservation services, showing a mean minimum and maximum flow of -10.14 yuan/(hm2·d) and 142.24 yuan/(hm2·d), respectively. It was also found that within a year, there was only about 40 days when the forest ecosystems delivered soil conservation services, with suggesting a peak flow of soil conservation of 28.92 yuan/(hm2·d). At the monthly scale, the mean maximum flows of biomass production service occurred in August, while that of water conservation services and soil conservation services occurred in June, being equal to 274.74 yuan/(hm2·month) and 47.89 yuan/(hm2·month), respectively. The gas regulation services peaked in July, showing a mean maximum flow of 303.67 yuan/(hm2·month). Furthermore, the proportions of value accumulated in summer for biomass production ranged from 36.44% in 2007 to 39.67% in 2006, and that of gas regulation ranged from 25.77% in 2007 to 43.67% in 2006. The mean proportions of value accumulated in summer for water conservation and soil conservation were 25.67% and 42.53%, respectively. The study would provide an insight into the mechanisms of ecosystem services delivery and their dynamic variations as well as ecosystem services nursery.
%K Flow
%K Ecosystem service
%K Forest
%K Economic value
%K Qianyanzhou<br>流量
%K 生态系统服务
%K 森林
%K 经济价值
%K 千烟洲
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=B5EDD921F3D863E289B22F36E70174A7007B5F5E43D63598017D41BB67247657&cid=B47B31F6349F979B&jid=9DEEAF23637E6E9539AD99BE6ABAB2B3&aid=81C4405AC44B7908051926B3A86FD9BD&yid=140ECF96957D60B2&vid=9971A5E270697F23&iid=94C357A881DFC066&sid=6D80B994DAB4686B&eid=2C8B50BA95995EA2&journal_id=1007-7588&journal_name=资源科学&referenced_num=2&reference_num=34