| Emergy evaluation of the artificial forest ecosystems in the watershed of Miyun Reservoir：a case study for ecosystems valuation and environmental management |
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| 作者姓名： | Hu Yanxia Zhou Liandi Dong Xiaobin Yan Maochao |
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| 作者单位： | [1]Institute for Integrated Development of Agriculture,Beijing Academy of Ago-forestry Sciences, Beijing 100097,P.R.China [2]Institute of Resource, Beijing Normal University, Beijing, 100875,P.R.China [3]College of Agronomy and Biological Technology ,China Agricultural University, Beijing 100094, P.R China [4]Institute of Geographial Sciences and Natural Resource Resarch ,CAS, Beijing 100094,P.R.China |
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| 摘 要： | To build the artificial forest ecosystem is the major eco-economic development model in the watershed of Miyun Reservoir. It is very important to evaluate the benefits of those ecosystems. Emergy theories are very helpful for us to establish a science-based assessment framework. Emergy evaluation of the artificial forest ecosystems in the watershed of Miyun Reservoir is used to asses the relative values of several ecological functions （sometimes called ecosystem services） and main ecosystem storages （sometimes called natural capital）. The main driving energies, internal processes and storages are evaluated. The main functions, including transpiration, GPP and infiltration, are evaluated, which are 609em$/ha/yr, 6,245em$/ha/yr and 340em$/ha/yr respectively. The total values of major environmental services are 4,683em$/ha/yr in the artificial forest ecosystem. The main storages of natural capital including live biomass, soil moisture, organic matter, underground water and landform are estimated, which are 112,028em$/ha, 9em$/ha, 40,718em$/ha, 34em$/ha and 6,400,514em$/ha respectively. The largest value is landform, which accounts for 97.7% of these calculated total emdollar values. The concept of replacement value is explored using the emergy values of both ecosystem services and natural capital. The total calculated replacement values are 302,160em$/ha.
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| 关 键 词： | 人工造林 能源评估 生态环境 环境保护 |
| 修稿时间： | 2007-04-24 |
Emergy evaluation of the artificial forest ecosystems in the watershed of Miyun Reservoir:a case study for ecosystems valuation and environmental management |
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| Hu Yanxia Zhou Liandi Dong Xiaobin Yan Maochao.Emergy evaluation of the artificial forest ecosystems in the watershed of Miyun Reservoir:a case study for ecosystems valuation and environmental management[J].Ecological Economy,2007,3(4):381-392. |
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| Authors: | Hu Yanxia Zhou Liandi Dong Xiaobin Yan Maochao |
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| Abstract: | To build the artificial forest ecoaystem is the major eco-economic development model in the watershed of Miyun Reservoir.It is very important to evaluate the benefits of those ecosystems.Emergy theories are very helpful for us to establish a science-based assessment framework.Emergy evatuation of the artificial forest ecosystems in the watershed of Miyun Reservoir is used to asses the relative values of several ecological hinctions (sometimes called ecosystem services)and main ecosystem storages(sometimes called natural capital).The main driving energtes,internal processes and storages are evaluated.The main functions,including transpiration,GPP and infiltration,are evaluated,which are 609em$/ha/yr,6,245em$/ha/yr and 340em$/ha/yr respectively.The total values of major environmental services are 4,683em$/ha/yr in the artificial forest ecosystem.The main storages of natural capital including live biomass,soil moisture,organic matter,underground water and landform are estimated,which are 112,028em$/ha,9em$/ha,40,718em$/ha,34em$/ha and 6,400.514em$/ha respectively.The largest value is landform,which accounts for97.7%of these calculated total emdollar values.The concept of replacement value is explored using the emergy values of both ecosystem services and natural capital.The total calculated replacement values are 302,160em$/ha. |
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| Keywords: | Artificial forest ecosystems Emergy evaluation Environmental services Natural capital |
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