辽西地区土地利用变化对生态安全的影响——以朝阳县为例
基于RS和GIS技术，以朝阳县为例，研究辽西地区土地利用变化及其结构特征，通过模糊关联度法和多级加权求和模型，生成2000和2010年土地生态安全等级图。研究结果表明：10年来朝阳县土地利用变化剧烈，居民工矿用地与交通用地大幅增加，水土流失率下降，生态安全有逐渐提高的趋势。生态安全等级较高区域主要分布在县域中部；生态安全等级中等区域主要分布在县域南部和北部；生态安全等级较低区域主要分布在县域中部少数地区。最后针对生态安全等级的分布格局，提出了生态环境安全的政策建议及改造措施。...
Saved in:
| Published in | 西南农业学报 Vol. 26; no. 2; pp. 667 - 671 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
沈阳农业大学,辽宁沈阳,110866%朝阳县国土资源局,辽宁朝阳,122000
2013
|
| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-4829 |
Cover
| Summary: | 基于RS和GIS技术，以朝阳县为例，研究辽西地区土地利用变化及其结构特征，通过模糊关联度法和多级加权求和模型，生成2000和2010年土地生态安全等级图。研究结果表明：10年来朝阳县土地利用变化剧烈，居民工矿用地与交通用地大幅增加，水土流失率下降，生态安全有逐渐提高的趋势。生态安全等级较高区域主要分布在县域中部；生态安全等级中等区域主要分布在县域南部和北部；生态安全等级较低区域主要分布在县域中部少数地区。最后针对生态安全等级的分布格局，提出了生态环境安全的政策建议及改造措施。 |
|---|---|
| Bibliography: | LUAN Guang-yu,JIA Shu-hai,TANG Lei,ZHANG An,ZHANG Yu-wei（1. Shenyang Agriculture University, Liaoning Shenyang 110866, China; 2. Chaoyang County National Land Resource Bureau, Liaoning Chaoyang 122000 ,China） Based on RS and GIS technology, taken Chaoyang county as an example, the changes of land use and its structure feature in west-em Liaoning province were studied. By fuzzy relational degree method and multistage weighted summation model, the ecological safety grade map of the land was generated from 2000 and 2010. The results showed that ,in the past 10 years, Chaoyang county land use dramatically had intense change, the residents and mining land and transportation land increased, soil erosion rate and the ecological security was gradually increasing trend. The higher ecological safety grade areas mainly distributed in the middle of the eounty; the medium major grade areas main-ly distributed in the south and north of the county ; the lower areas mainly distributed in the centre of the county. Based on thi |
| ISSN: | 1001-4829 |