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| 黄河三角洲土地利用/覆盖变化驱动力分析 | |
| 引用本文： | 汪小钦,王钦敏,励惠国,刘高焕.黄河三角洲土地利用/覆盖变化驱动力分析[J].资源科学,2007,29(5):175-181. |
| 作者姓名： | 汪小钦 王钦敏 励惠国 刘高焕 |
| 作者单位： | 1. 福州大学空间数据挖掘与信息共享教育部重点实验室,福州,350002;福州大学福建省空间信息工程研究中心,福州,350002 2. 福州大学空间数据挖掘与信息共享教育部重点实验室,福州,350002;福州大学福建省空间信息工程研究中心,福州,350002;中国科学院地理科学与资源研究所,北京,100101 3. 中国科学院地理科学与资源研究所,北京,100101 |
| 基金项目： | 教育部跨世纪优秀人才培养计划;国家高技术研究发展计划(863计划) |
| 摘 要： | 土地利用/覆盖变化(LUCC)的驱动力分析是土地利用/覆盖变化研究的核心。本文利用黄河三角洲东营市1984年~2001年5个时期的土地利用/覆盖数据,简要分析了黄河三角洲LUCC特征,重点研究其驱动力因子。在黄河三角洲,耕地和未利用地之间的双向转化最为频繁。海陆河流的交互作用使得黄河三角洲淤进蚀退变化占有较大的比重;淡水资源时空上的分布不均匀,使对平原水库的建设力度大为增加。对土地的盲目垦荒和粗放经营方式,是耕地与未利用地双向转换频繁的最主要原因;人口的增长,特别是非农业人口的增长,是居民地增多的主要原因;农业生产效益,对耕地、灌草地、内陆水体和未利用地之间的结构变化产生了较大的影响。在未来几年,整个黄河三角洲的面积将处于一种动态的平衡中,面积基本保持稳定。要实现黄河三角洲的可持续发展,就要在顺应自然因子的条件下,提高水陆比例,科学合理垦殖经营,大力发展和保护灌草地资源。 |
| 关 键 词： | 土地利用/覆盖变化 驱动力 黄河三角洲 土地利用策略 |
| 文章编号： | 1007-7588（2007）05-0175-07 |
| 修稿时间： | 2/1/2007 12:00:00 AM |
Driving Forces of Land Use Change/Cover in the Yellow River Delta |
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| WANG Xiao-qin,WANG Qin-min,LI Hui-guo and LIU Gao-huan.Driving Forces of Land Use Change/Cover in the Yellow River Delta[J].Resources Science,2007,29(5):175-181. | |
| Authors: | WANG Xiao-qin WANG Qin-min LI Hui-guo and LIU Gao-huan |
| Abstract: | The driving forces of land use and land cover change(LUCC) is one of the main issues for LUCC research.The land use and land cover changes are driven by natural and social-economical factors,but social-economical factors are determinative in the local and short time scale.In this paper,land use and land cover data of the Yellow River Delta derived from remote sensing data or GIS coverage in 1984,1986,1991,1996 and 2001 are used.As a whole,the area of land increased in the Yellow River Delta from 1984 to 2001.The largest area of land use types is dry land and wasteland.The dry land area is more than 30%,and waste land is more than 20%.The most frequent land use change types are changes between arable land and wasteland.The changes between wasteland and vegetation land and between vegetation land and arable land are also rapid.Based on the analysis of the characters of the LUCC of the Yellow River Delta,the determinative driving forces of LUCC were discussed.With its high sediment contents in the Yellow River,the coastal line in the present estuary extended to the ocean.In the old course estuary,because of ocean dynamic effect and the lack of sediment,the coastal line was eroded.When the extended area is larger than that of erosion,the land area of the delta increased,in which the main changes happened between tidal land and ocean.Due to the asymmetrical spatial and temporal distribution of freshwater,especially the break-off water discharge in the Yellow River channel,the area of inland water increased much from 1991.Land reclamation and extensive cultivation are the determinative factors for the frequent change between arable land and wasteland,which led to the large agriculture scale in one hand,and also led to land degradation in the other hand.Population increase,especially non-agricultural population increase,led to the residential area increased.Agriculture is the dominant industry in the Yellow River Delta.There was a negative correlation between arable land and farming output value,and a significant negative correlation between shrub-grass land and animal husbandry output value,while an extremely significant positive correlation existing between inland water area and fishery output value.So agricultural benefit has much effect on land use changes among arable land,vegetation land,inland water and wasteland.The Yellow River runoff and sand-transportation is the base for delta evolution.Because of the large irrigation works in the upriver of the Yellow River,the area of the whole Yellow River Delta will be in a dynamic balance and keep stable in the future.To keep sustainable development,the area ratio of water and land must be increased under the condition of natural factors,land reclamation and cultivation must be rationalized,and shrubbery and grassland must be greatly developed and protected. |
| Keywords: | Land use and land cover change(LUCC) Driving forces The Yellow River Delta Land use strategy |
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