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靳相木,柳乾坤.基于三维生态足迹模型扩展的土地承载力指数研究——以温州市为例.生态学报,2017,37(9):2982~2993 本文二维码信息
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基于三维生态足迹模型扩展的土地承载力指数研究——以温州市为例
A nalysis of a land carrying capacity index based on an expanded three-dimensional ecological footprint model: a case study of Wenzhou
投稿时间:2016-01-31  修订日期:2016-10-12
DOI: 10.5846/stxb201601310224
关键词三维生态足迹模型  足迹深度  扩展  土地承载力评价
Key Wordsthree-dimensional ecological footprint model  footprint depth  expansion  land carrying capacity evaluation
基金项目国家自然科学基金项目(71273226)
作者单位E-mail
靳相木 浙江大学土地与国家发展研究院, 杭州 310058  
柳乾坤 浙江大学土地与国家发展研究院, 杭州 310058 liuqiankun234@163.com 
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摘要:
生态足迹模型是土地承载力评价的重要方法。通过将Niccolucci三维生态足迹模型中足迹深度的取值范围从大于等于1扩展到大于等于0,将生态盈余状态的分析纳入一个统一的三维模型框架,实现了自然资源消费对资源流量和资源存量占用程度在核算上的统一。以温州市为例,运用扩展后的三维模型计算了2000-2012年间温州市的生态足迹、足迹深度、生态赤字(盈余)。在此基础上,引入粮食压力指数、水资源压力指数、碳汇压力指数、建设压力指数和土地综合负担指数等土地承载力评价指数,判断当前市域土地是否处于超载状态,以及超载程度。研究结果表明:2000-2012年间,温州市人均生态足迹从整体生呈逐年上升的趋势,人均生态生产性土地面积基本保持不变,生态赤字严重且逐年上升,温州市土地承担着巨大压力;2000-2012年间温州市足迹深度在4-6之间,自然资源流量远远不能满足自然资源需求,需要消耗大量的自然资源存量来支撑当前的发展和消费;温州市粮食压力指数、水资源压力指数、碳汇压力指数、土地综合压力指数均大于1,耕地、水域、林地均处于超载状态,且自2000年以来,温州市土地所承载的自然资源消费压力是其承载能力的4倍以上。
Abstract:
The ecological footprint method was initially proposed by Rees in the early 1990s, and Wackernagel and Niccolucci subsequently developed this method into two-and three-dimensional models. Ecological footprint models, as tools to estimate the appropriation of natural resources by humans, are important to evaluate the land carrying capacity. Using the three-dimension model, this paper expanded the footprint depth value range from ≥ 1 to ≥ 0, and the ecological deficit and remainder were then analyzed. Using a modified three-dimensional model, the ecological footprint, footprint depth, and ecological deficit (remainder) in Wenzhou City were calculated from 2000 to 2012. On this basis, the food pressure, water pressure, carbon sink pressure, construction pressure, and land comprehensive load indexes were introduced to the indicator system of land carrying capacity, and the condition of load carrying of Wenzhou City was determined. The results showed that from 2006 to 2012, the ecological footprint per capita increased annually, and since the biologically productive land remained unchanged, the ecological deficit worsened and a greater load was imposed on the land in Wenzhou City. The footprint depth value ranged from 4 to 6, which meant that natural resource flows could not meet the demand of everyday residential consumption, and natural resource stocks were extensively depleted. The food pressure, water pressure, carbon sink pressure, and land comprehensive load indexes were > 1, which indicated that arable land, sea, and forest were overloaded. Since 2000, the load, primarily from food and carbon sink pressures, imposed on biological productive land was three times greater than its carrying capacity.
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