| 灰色关联分析在绿洲生态稳定性评价中的应用 |
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| 引用本文： | 张金萍,孙素艳,张静.灰色关联分析在绿洲生态稳定性评价中的应用[J].资源科学,2006,28(4):195-200. |
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| 作者姓名： | 张金萍 孙素艳 张静 |
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| 作者单位： | 1. 中国水利水电科学研究院水资源研究所,北京,100044
2. 宁夏农业现代化基地建设办公室,银川,750001 |
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| 基金项目： | 科技部科技攻关项目西部开发科技行动 |
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| 摘 要： | 绿洲生态稳是维系绿洲健康生存，确保经济、社会和生态和谐发展的基础条件。鉴于水资源对干旱半干旱地区生态系统的制约性作用，本文以宁夏川区为例，考虑水资源、生物资源、土地资源和环境因子四项影响绿洲生态稳定性的主要因素，建立绿洲生态稳定性评价指标体系。结合宁夏川区实际情况，进行单指标分级标准划分，并建立相应指标转化函数，实现不同量纲指标间的归一化。最后，应用灰色关联分析方法，选用2000年宁夏川区10个县市为计算单元，研究黄河来水频率为50%情况下的宁夏川区绿洲生态稳定性，结果表明：2000年在黄河来水频率为50%的情况下，川区各县市的绿洲稳定性除中宁县为良好状态外，其余都处于一般状态上限，接近良好，整体上看，川区绿洲生态稳定性尚令人满意。
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| 关 键 词： | 宁夏 绿洲 灰色关联分析 生态稳定 |
| 文章编号： | 1007-7588(2006)04-0195-06 |
| 收稿时间： | 2005-12-02 |
| 修稿时间： | 2006-03-15 |
Application of Grey Correlation Analysis in Oasis Ecosystem Stability Evaluation |
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| ZHANG Jin-ping,SUN Su-yan and ZHANG Jing.Application of Grey Correlation Analysis in Oasis Ecosystem Stability Evaluation[J].Resources Science,2006,28(4):195-200. |
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| Authors: | ZHANG Jin-ping SUN Su-yan and ZHANG Jing |
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| Abstract: | The oasis ecosystem stability is a foundation for sustaining the harmonious development of economy,society and environment of oasis.Especially in semi-arid and arid regions,Water resources play a dominant role in the oasis ecosystem stability.How to rationally analyze and evaluate the oasis ecosystem stability to realize the sustainable development of oasis has become a hot topic at present.The grey correlation analysis method is a good one to classify the ecosystem stability because it has no limitations for the evaluation indexes' dimension and can compare the differences between the ecosystem stability in all evaluated units.This paper takes Ningxia as an example to establish oasis ecosystem stability evaluation system,in which such four factors as water resources,soil resources,biological resources and environment were taken into consideration. Combining with the actual situation of study area,the standards of each evaluation index are classified into five grades: best,good,normal,bad and worse.For comparing the values of different evaluation indexes to clearly reflect their importance in the evaluation system,it is needed to deal with these indexes with different dimensions under gray correlation theory.So,the corresponding index transformation functions are constructed.Finally,with the method of grey correlation analysis,the stability of ten units in the north of Ningxia is studied with 50% inflow frequency of the Yellow River in year 2000.The results show that the ecosystem stability of ten evaluated units are all in normal state and Zhongning County is in good state.The general oasis ecosystem stability is 0.78. Generally the oasis ecosystem stability is still satisfying.In the future,we should pay more attention to the protection of ecosystem in the north of Ningxia and guarantee the water demand of ecosystem fully so as to sustain the stability of oasis ecosystem. |
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| Keywords: | Ningxia Oasis Grey correlation analysis Ecosystem stability |
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