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### 不同土地利用方式下的七里海湿地临界评价研究

1. 1.天津工业大学土地利用工程研究中心,天津 300387
2. 天津古海岸与湿地国家级自然保护区管理处,天津 300192
• 收稿日期:2011-03-09 修回日期:2011-08-22 出版日期:2012-04-20 发布日期:2012-04-20
• 作者简介:

作者简介：蔡为民（1970-）,男,山东淄博人,博士,副教授,主要从事公共政策分析及湿地资源管理研究。E-mail：157903792@qq.com

• 基金资助:
天津市科技支撑项目（08ZCGHHZ00900）资助

### Assessment on Critical Criteria of Qilihai Wetland for Different Exploitation

Wei-min CAI1(), Shi-yuan YANG1, Su-yan WANG2, Nan ZHOU2

1. 1. Land Use Engineering Research Center, Tianjin Polytechnic University, Tianjin 300387, China
2. Administration of Tianjin Ancient Coast and Wetlands National Nature Reserve,Tianjin 300192, China
• Received:2011-03-09 Revised:2011-08-22 Online:2012-04-20 Published:2012-04-20

Abstract:

Based on the concept of “wetland criticality” , the qualitative analysis was made in this paper to research on wetland exploitation and reservation optimization, and then the research procedures on the critical criteria of different kinds of used wetland. On the basis of the analyses of the use of cultivated land and the farming of river crab, the paper makes an assessment on criteria of Qilihai Wetland. The theory of exploitation and preservation of Qilihai Wetland means that the net marginal earnings of wetland should not be less than the net marginal losses when wetland is exploited. It can be defined as the equilibrium of utilization and reservation. This theory consists of ecological criteria,economical criteria and social criteria. Ecological criteria means that the basic constraint of economical and social criterion is usually seen as the dynamic constraint. The three aspects are not independent but interactive and restricted mutually, so they form an entirety that should not be separated. This passage also made a preliminary study of utilization and protection criticality of Qilihai Wetland from the perspective that the wetland was used as cultivation and raising crabs. By estimating the value of ecosystem service, the outcome of earnings and losses were calculated by means of the analysis on compatibility of each ecosystem service. The result showed that the way to establish a critical model of wetland and the analysis of economical benefit and ecological benefit could reflect the situation of wetland (utilization of critical situation by analyzing the criticality of wetland used and reserved resource). The net earnings of farmland were 2 231 798.42 yuan/hm2 and the net losses were 18 072.75 yuan/hm2, so the value of ΔB, which was the criteria of exploitation and preservation limitation, was 2 213 725.67 yuan/hm2. The net earnings of crab were 21 622.68 yuan/hm2 and the net losses were 20 274 yuan/hm2, so the value of ΔB, was 1 348.68 yuan/hm2.The preliminary study showed that Qilihai Wetland, exploited as cultivation and raising crab, is not overstepped under the circumstances of current social and economic development and Qilihai Wetland could be exploited potentially in the future.

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