| 三江源地区生态系统生态功能分析及其价值评估 |
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| 引用本文： | 刘敏,李迪强,温琰茂,栾晓峰.三江源地区生态系统生态功能分析及其价值评估[J].环境科学学报,2005,25(9):1280-1286. |
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| 作者姓名： | 刘敏 李迪强 温琰茂 栾晓峰 |
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| 作者单位： | 中国林业科学研究院森林生态环境与保护研究所,北京,100091;中山大学环境科学与工程学院,广州,510275;湛江海洋大学,湛江,524088;中国林业科学研究院森林生态环境与保护研究所,北京,100091;中山大学环境科学与工程学院,广州,510275 |
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| 基金项目： | 国家科技部社会公益项目（No.2001DIB100058）;国家林业局自然保护区社会经济与生态价值评估项目资助 |
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| 摘 要： | 在地理信息系统的支持下,将相关地图数字化并利用已有的地形数据库等资料,研究了三江源地区生态系统土壤保持、涵养水源、固定CO2和释放O2等4项生态功能,并利用市场价值法、机会成本法和影子工程法等评估了其生态功能的价值.研究结果表明:三江源地区生态系统土壤保持总量为1.0383×109t·a-1,其价值总计为1.2528×109元·a-1;植被凋落物和土壤涵养水源能力为1.6469×1010t·a-1,涵养水源能力价值为1.1034×1010元·a-1;生态系统固定CO2为1.4128×108t·a-1,价值为1.0053×1010～4.7798×1010元·a-1;释放O2为1.0401×108t·a-1,价值为3.6709×1010～4.1605×1010元·a-1;4项生态功能合计总价值为5.9049×1010～1.0169×1011元·a-1.由此可见,三江源地区生态系统生态功能价值巨大,保护其生态系统结构和功能对我国江河中下游地区和东南亚国家生态环境安全和区域可持续发展具有重大意义.
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| 关 键 词： | 三江源地区 生态功能 价值评估 空间分析 |
| 文章编号： | 0253-2468(2005)09-1280-07 |
| 收稿时间： | 12 15 2004 12:00AM |
| 修稿时间： | 05 31 2005 12:00AM |
The ecological function analysis and evaluation of ecosystem in Sanjiangyuan region |
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| LIU Minchao,LI Diqiang,WEN Yanmao and LUAN Xiaofeng.The ecological function analysis and evaluation of ecosystem in Sanjiangyuan region[J].Acta Scientiae Circumstantiae,2005,25(9):1280-1286. |
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| Authors: | LIU Minchao LI Diqiang WEN Yanmao and LUAN Xiaofeng |
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| Institution: | 1. Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing 100091; 2. School of Environmental Science and Engineering, Sun Yat-sen University, Guanqzhou 510275; 3. Zhanjiang Ocean University, Zhanjiang 524088,Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing 100091,School of Environmental Science and Engineering, Sun Yat-sen University, Guanqzhou 510275 and Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing 100091 |
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| Abstract: | Services function of ecosystem in Sanjiangyuan region, including soil conservation, water-holding, carbon dioxide fixation and oxygen production, were analyzed with geographic information system (GIS), and its ecological functions were assessed with methods of market valuation, opportunity cost and shadow engineering. The results indicated that the quantity of soil conservation, water-holding, carbon dioxide fixation and oxygen production were 1038.3million, 16469million, 141.28million, 104.01milliont·a-1, respectively; their economic values were 1252.8million, 11034million, 10053-47798million, 36709-41605million yuanRMB·a-1, respectively; the total ecological value of ecosystem was 59049-101690million yuanRMB·a-1. The ecological functions and value were huge in Sanjiangyuan region, and it was very important to protect the structure and functions of its ecosystem for environment safety and sustainable development for the middle and lower reaches of rivers originating from Sanjiangyuan region. |
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| Keywords: | Sanjiangyuan region ecological function value of ecosystem spatial analysis |
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