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| 土地经济生态位变化下的城乡空间景观格局表征——以广东省惠州市为例 | |
| 引用本文： | 吴箐,李宇.土地经济生态位变化下的城乡空间景观格局表征——以广东省惠州市为例[J].地理科学,2014,34(6):705-710. |
| 作者姓名： | 吴箐 李宇 |
| 作者单位： | 1.中山大学地理科学与规划学院,广东 广州 510275 2.环境保护部华南环境科学研究所,广东 广州 510655 |
| 基金项目： | 环境保护部东江流域水污染控制与生态系统恢复技术与综合示范项目（2009ZX0721-005）资助 |
| 摘 要： | 土地利用变化对生物多样性和生态过程有着深刻的影响,与城乡景观格局变化密切相关。尝试将土地利用变化驱动力——土地经济生态位的理论和方法引入到景观生态学当中,为城乡空间景观格局空间表征提供新的方法。通过选取表征景观格局指标的破碎化指数、分形维数,利用Envi4.8、Arcmap10.0,Fragstasts4.1等软件,以广东省惠州市为例,在分析土地经济生态位与景观类型、景观指数之间的关系基础上,对土地经济生态位变化下的城乡空间景观格局进行表征。结果表明：不同景观土地面积数量的增减与该类型土地经济生态位升降具有一致性的规律,土地经济生态位上升,相应的景观土地面积增大,反之则减小;土地经济生态位越小,表征景观格局的景观破碎化指数、分维数指数越大,破碎化指数与分维数指数的增减与土地经济生态位升降表现出一致性的规律,土地经济生态位上升,相应的破碎化指数、分维数指数则增大,反之则减小;城乡空间景观格局变化的发生主要出现在土地经济生态位高的区域。土地经济生态位的变化是城乡景观格局变化的重要影响因子,能够很好解释城乡空间景观格局特征。 |
| 关 键 词： | 景观格局 土地经济生态位 破碎化指数 分形维数 惠州市 |
| 收稿时间： | 2013-07-05 |
| 修稿时间： | 2013-12-25 |
The Repersentation of Landscape Pattern to Land Economic Niche Changes: A Case Study of Huizhou City in Guangdong Province |
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| Qing WU,Yu LI.The Repersentation of Landscape Pattern to Land Economic Niche Changes: A Case Study of Huizhou City in Guangdong Province[J].Scientia Geographica Sinica,2014,34(6):705-710. | |
| Authors: | Qing WU Yu LI |
| Institution: | 1.School of Geography and Planning,Sun Yat-sen University,Guangzhou, Guangdong 510275,China 2.South China Institute of Environmental Sciences,Ministry of Environmental Protection,Guangzhou Guangdong 510655,China |
| Abstract: | The land use change has profoundly impact on biodiversity and ecological processes, and is closely related to the change of the rural and urban landscape pattern. As the driving force of land use, the theory of land economic niche was used to analyze the rural and urban landscape pattern in this article, with an aim to provide some new methods for the characterization and representation of landscape pattern. The typical parameters of landscape pattern including fragmentation index and fractal dimension were selected, and the software Envi 4.8(RS), Arcmap 10.0(GIS) and Fragstasts 4.1 were used, to discuss the relationship between the land economic niche, also its change, and the urban and rural spatial landscape pattern in Huizhou City, Guangdong Province. Results showed that the changes of different landscape land area corresponded well with those of land economic niche, when the land economic niche increased, the corresponding landscape land area also increased and vice versa. The smaller the land economic niche was , the bigger the fragmentation and fractal dimension index were. Meanwhile, the changes of fragmentation index and fractal dimension index corresponded well with that of land economic niche, where the land economic niche increased, the fragmentation index and fractal dimension index increased correspondingly and vice versa. The change of urban and rural space landscape pattern occurred mainly in areas with high land economic niche. The land economic niche is an important factor affecting the change of landscape pattern in urban and rural areas. The variance of the land economic niche can well explain the urban and rural spatial landscape pattern characteristics. |
| Keywords: | landscape pattern land economic niche fragmentation index fractal dimension Huizhou City |
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