| 贵州省近期土地利用变化及其生态效应 |
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| 引用本文： | 谭秋,李阳兵.贵州省近期土地利用变化及其生态效应[J].矿物岩石地球化学通报,2007,26(1):57-63. |
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| 作者姓名： | 谭秋 李阳兵 |
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| 作者单位： | 1. 中国科学院,地球化学研究所,环境地球化学国家重点实验室,贵阳,550002;中国科学院,研究生院,北京,100049
2. 贵州师范大学,地理与生物科学学院,贵阳,550001 |
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| 基金项目： | 中国科学院科技支黔工程资助项目 |
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| 摘 要： | 在全球环境变化研究中,土地利用和土地覆被动态研究是一个关键而迫切的课题。本文依据覆盖贵州省20世纪90年代末5 a时间间隔的陆地卫星数据资料,研究了土地利用变化的特征和空间分布规律,并通过土地利用转移矩阵揭示了各区域土地利用变化动态的转化过程;同时以生态系统服务功能衡量相应土地利用类型的相对生态价值,评价区域土地利用/土地覆被变化的生态效应。结果表明,在研究时段内,省内各区域退耕还林与毁林开荒并存,区域间有明显的差异,整体景观尚处于波动状态。在1995~2000年的土地利用变化中,由于旱地、有林地、灌木林地、中低覆盖度荒草地等土地利用类型相互间的频繁转换,各区域土地利用生态价值并未有明显的提高。
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| 关 键 词： | 土地利用变化 生态效应 贵州省 |
| 文章编号： | 1007-2802-（2007）01-0057-07 |
| 修稿时间： | 2006-05-252006-08-14 |
Recent Land Use Change and Its Ecological Effect in Guizhou Province |
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| TAN Qiu,LI Yang-bing.Recent Land Use Change and Its Ecological Effect in Guizhou Province[J].Bulletin of Mineralogy Petrology and Geochemistry,2007,26(1):57-63. |
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| Authors: | TAN Qiu LI Yang-bing |
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| Institution: | 1. State Key Laboratory of Environment Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China; 2. Graduate School of CAS , Beijing 100049,China; 3. Department of Geographical and Biological Sciences, Guizhou Normal University, Guiyang 550001, China |
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| Abstract: | It is gradually believed that the dynamic changes of land use and the associated vegetation is a key and imperative research subject in the filed of global environmental change.This paper has studied the characteristics of land-use variations and their regional differences quantitatively by analyzing satellite remote sensing data of Guizhou Province collected from 1995 to 2000,revealed the regional dynamic variations of land-use in the region through the land-use transition matrix analysis,evaluated the relative ecological values of various types of land-use and reviewed the ecological impact caused by the variation of the land-use and the associated vegetation in the region through the evaluating the functions of the ecological system.The results show that there was a concurrence of reclamation and reforesting of the cultivated land during the periods,with obvious differences among various territories and the whole landscapes in fluctuating state.Moreover,there is no evident increase for the ecological values of the land in various territories due to the frequent changes among various land-use types of upland field,forestry,shrubbery land and low-cover grassland. |
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| Keywords: | Iland use change ecological effect Guizhou Province |
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