| 张微微,李晶,刘焱序.关中-天水经济区农田生态系统服务价值评价[J].干旱地区农业研究,2012,30(2):201~205 |
| 关中-天水经济区农田生态系统服务价值评价 |
| The Farmland ecosystem service value of Guanzhong-Tianshui Economic Zone |
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| DOI：10.7606/j.issn.1000-7601.2012.02.34 |
| 中文关键词: 关中-天水经济区 农田生态系统 生态服务价值 空间差异 |
| 英文关键词:Guanzhong-Tianshui Economic Zone farmland ecosystem ecosystem service value spatial difference |
| 基金项目:国家自然科学基金项目(41001388，40771019);中央高校基本科研业务费专项资金资助项目(GK200902023) |
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| 中文摘要: |
| 生态系统服务价值作为一种潜在的经济效益，常被人们忽略，造成经济价值在无形中大量损失，本研究目的在于定量分析生态系统的服务价值。在GIS和RS的支持下，根据生态系统服
务评价理论，采用生态经济学方法，计算2007年关中-天水经济区范围内农田生态系统的生态服务价值量。关中-天水经济区农田生态系统的总价值量为2.392×1012元，其中负价值为2.457×1011元，正负价值比例达10.88∶1。咸阳市的农田生态系统服务价值贡献率最大，占46%，其次是渭南市，占20%；渭南市的生态负价值贡献率最大，其次是铜川市。总体上看，关中-天水经济区农田生态系统服务价值呈现一定的空间区域差异，表现为平原服务价值高，山地服务价值低。服务价值高低主要受地势、综合地理条件、农业种植技术及环境污染程度的影响。 |
| 英文摘要: |
| The ecosystem service value, as a potential economic benefit, was often overlooked,which had virtually resulted in significant loss of economic value, so it was very important to do quantitative research of ecosystem service value. Based on the GIS and RS, according to the theory of ecosystem service assessment, the ecological economics approach was used to calculate the value of farmland ecosystem services in Guanzhong-Tianshui Economic Zone. The total value of farmland ecosystem service was 2.392×1012 yuan in the zone, where the negative value was 2.457×1011 yuan, and the proportion of positive and negative value was 10.88:1. Among different regions, Xianyang had the greatest positive co
ntribution, accounting for 46%, followed by Weinan, for 20%; However, Weinan had the largest negative value proportion, followed by Tongchuan. Above all, the value of farmland ecosystem service in Guanzhong-Tianshui Economic Zone showed certain spatial differences: high in plain area and low in mountainous area, and it is mainly influenced by the factors of terrain, general geographic condition, farming technology and envrionmental pollution. |
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