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作 者:张洁瑕[1,2] 陈佑启[1,2] 万利[1,2] 李志斌[1,2]
机构地区:[1]农业部资源遥感与数字农业重点开放实验室,北京100081 [2]中国农业科学院农业资源与农业区划研究所,北京100081
出 处:《中国农业大学学报》2009年第3期135-144,共10页Journal of China Agricultural University
基 金:科技部科研院所社会公益研究专项(2004DIB3J092)
摘 要:本文系统阐述了土地生产力研究的发展过程,着重从土地生产力研究的内涵、影响因子、评价方法及主要研究内容方面展开论述。随着社会经济的发展以及数学方法与3S技术的应用,土地生产力的内涵趋于全面,关于其评价经历了从定性评价方法走向定量评价方法,服务于选择土地利用方式、区划、规划转向服务于土地持续利用,侧重于对土地生产力的准确表达进入到涉及土地系统自身对不同利用方式的具体反映。尤其是20世纪90年代中期以来,对土地生产力的自我更新能力和土地受外应力作用后在生产力方面的表现以及对抵抗外应力的弹性限度更加关注。最后简要评述了土地生产力研究存在的问题,认为构建具有可持续性的土地生产力评价指标体系及加强3S技术的应用研究为今后的研究方向。Research on land productivity is elaborated systematically. Focusing on the meaning, impact factor, evaluation methods and main content of land productivity, the study makes a brief comment. With the development of society and economy, and application of mathematical models and 3S technology, land productivity has achieved a comprehensive meaning, and its evaluation goes through a series of processes, from qualitative methods to quantitative methods, and from assisting the choice of land use patterns, regionalization and planning to sustainable land use. The evaluation also progresses from emphasizing particularly on the exact definition of land productivity to material feedback on land system itself to different land use patterns. Since 1995 people have paid particular attention to the ability of self-renewal on land productivity, and the effect of external stress on it as well as the elastic limit to resists external stress on land. Finally, the study comments briefly and proposes future research directions for assessing the sustainable development of land productivity and enhancing the applied research on 3S technology.
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