| 基于熵权物元模型的青海省土地生态安全评价 |
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| 引用本文： | 马红莉,盖艾鸿.基于熵权物元模型的青海省土地生态安全评价[J].中国农学通报,2014,30(2):208-214. |
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| 作者姓名： | 马红莉 盖艾鸿 |
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| 作者单位： | 甘肃农业大学 |
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| 基金项目： | 青海省海西州土地整治规划项目支持 |
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| 摘 要： | 为了科学评判生态脆弱区青海省土地资源的生态安全及其变化情况，运用熵权法和P-S-R模型，构建该区域土地生态安全评价指标体系及权重，采用物元理论建立土地生态安全的综合评判模型，并对青海省2000—2010年土地生态安全状况变化情况及空间差异进行了分析。结果表明：青海省土地生态安全的发展趋势大体表现为“较不安全→临界安全”；青海省各市（州、地区）的土地生态安全状况变化情况不尽相同，地区间差异明显；影响青海省土地生态安全水平的主要制约因素包括经济密度、人均耕地面积、林草覆盖率、水土协调度、成灾面积比重和化肥施用量。
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| 关 键 词： | 酸性磷酸酶 酸性磷酸酶 |
| 收稿时间： | 3/1/2013 12:00:00 AM |
| 修稿时间： | 2013/4/12 0:00:00 |
Evaluation of Eco-security in Qinghai Province Based on Entropy Weight and Matter Element Model |
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| Ma Hongli;Gai Aihong.Evaluation of Eco-security in Qinghai Province Based on Entropy Weight and Matter Element Model[J].Chinese Agricultural Science Bulletin,2014,30(2):208-214. |
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| Authors: | Ma Hongli;Gai Aihong |
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| Institution: | Ma Hongli;Gai Aihong;College of Resources and Environmental Science,Gansu Agricultural University; |
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| Abstract: | In order to estimate scientifically land eco-security of ecologically fragile area and it＇s change of cultivated land resources in Qinghai Province, an index system and the corresponding weight values were established based on＂pressure-state-response＂model and entropy weight method, and an integrated evaluation model was constructed with matter element model to evaluate land eco-security of Qinghai Province. Land eco-security change situation was analyzed in Qinghai Province during 2000 to 2010. Results indicated that, the whole level of land eco-security in Qinghai Province improved slightly from relative insecurity to critical security; The change of cultivated land eco-security index was different of each city/state in Qinghai Province and the distinction of different city/state were obvious. The main restriction factors of land eco-security was density of economy, cultivated land area per capita, forest and grass coverage ratio, proportion of natural disaster area and dosage of farmland fertilizer. |
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| Keywords: | evaluation |
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