| 近15 年海南岛林地资源时空动态特征及政策驱动 |
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| 引用本文： | 徐新良,刘纪远,庄大方.近15 年海南岛林地资源时空动态特征及政策驱动[J].资源科学,2004,26(2):100-107. |
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| 作者姓名： | 徐新良 刘纪远 庄大方 |
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| 作者单位： | 1. 中国科学院地理科学与资源研究所,北京,100101
2. 国家发展计划委员会宏观经济研究院,北京,100824 |
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| 基金项目： | 中国科学院知识创新工程项目，欧盟资助项目 |
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| 摘 要： | 遥感(RS)和地理信息系统(GIs)技术的发展为林地资源的调查和时空变化分析提供了有效手段.该文在遥感与地理信息系统技术支持下,利用中国资源环境数据库中1985年、1995年和2000年3期林地类型空间分布数据,通过建立林地资源时空演变模型,对海南岛林地资源变化的时空特征进行了定量分析,结果表明:1985年～2000年15年内,海南岛林地发生了大幅度的变化,而且空间差异非常明显,其中最近5年林地变化的广度和深度都远远超过了前1O年.1985年～1995年海南岛林地资源总量出现大幅度增加,尤其是有林地的增长特别明显;而1995年～2000年大量的林地转为耕地和城镇建设用地,该时期有林地、灌木林和疏林地都出现大幅度减少.从空间格局来看,海口市在整个15年内,林地的变化始终最为突出,东部沿海县市,如文昌、琼海、万宁、陵水、保亭等林地变化的动态度和减少的数量都远远大于其他地区.文章还进一步分析了政策因子对林地资源变化的影响.
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| 关 键 词： | 森林 林地资源 时空动态特征 驱动力 |
| 文章编号： | 1007-7588(2004)02-0100-08 |
| 收稿时间： | 1/1/1900 12:00:00 AM |
| 修稿时间： | 2003年5月7日 |
Spatial-Temporal Characteristics and Driving Forces of Woodland Resource Change in Hainan Island in the Last 15 years |
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| XU Xin-liang,LIU Ji-yuan,ZHUANG Da-fang,ZENG Lan.Spatial-Temporal Characteristics and Driving Forces of Woodland Resource Change in Hainan Island in the Last 15 years[J].Resources Science,2004,26(2):100-107. |
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| Authors: | XU Xin-liang LIU Ji-yuan ZHUANG Da-fang ZENG Lan |
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| Institution: | XU Xin-liang~1,LIU Ji-yuan~1,ZHUANG Da-fang~1,ZENG Lan~2 |
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| Abstract: | Hainan Island is the second largest island of China and it is a relatively detached area compared with the mainland.But from the foundation of Hainan province and Hainan special economy zone, the status of woodland resource, especially the forest, have taken great changes.So this article analyzed the spatial-temporal characteristics of woodland resource change in Hainan Island according to dynamic degree model and relative change rate model based on RS and GIS technology.The result showed that during the last 15 years from 1985 to 2000, the woodland resource have taken great changes and have different temporal characteristics: during the period from 1985 to 1995, the woodland area and forest area increased by (44953.1)hm~2 and (113445.68)hm~2 respectively; But During the latest 5 years from 1995 to 2000, the scope and depth of woodland resource changes exceeded that of previous period.Owing to lots of woodland turned into farmland and built-up area, the forest, bush and sparse wood area decreased greatly, especially the woodland area and forest area decreased by 28205.97 ha and 106847.21hm~2 respectively.In terms of spatial pattern, the woodland resource changes in distribution had extensive and unbalanced characteristics.From 1985 to 2000 the change rate in eastern and northeastern coastal plain area, such as Wenchang, Qionghai, Wanning, Lingsgui, Baoting is higher than that of other regions.The relative change rate of bush is higher than that of other woodland types.And the relative change rate of forest is prominent in Haikou, Wanning and Zhanzhou.During the previous period from 1985 to 1995, the highest relative change rate of forest, which equaled to 4.2, located in Zhanzhou county, but during the latest period from 1995 to 2000, the highest relative change rate of forest, which equaled to 6.37, located in Haikou county.According to the analysis on woodland transformation process, the author pointed out that the land-use structure change affected by socio-economic policies during 1985 to 2000 is the primary driving force that leading to the spatial-temporal change of woodland resource. |
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| Keywords: | Forest Woodland resource Temporal-spatial characteristic Driving force |
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