1990—2010年高台县耕地生态足迹和承载力动态研究  

Dynamic analysis of ecological footprint and ecological capacity of arable land in Gaotai during 1990—2010

作　　者：周丽萍[1] 王平[1] 刘淑英[1] 张学昕[1] 

机构地区：[1]甘肃农业大学资源与环境学院,甘肃兰州730070

出　　处：《干旱地区农业研究》2012年第4期207-212,共6页Agricultural Research in the Arid Areas

摘　　要：为了了解高台县耕地资源的可持续发展状况,利用生态足迹模型对高台县1990—2010年耕地的生态足迹、生态承载力及生态赤字进行了分析研究。结果表明:1990—2010年,高台县人均耕地生态足迹由0.4745hm2/人增加到1.9271 hm2/人,而人均耕地承载力由0.7095 hm2/人降低到0.6651 hm2/人,可见耕地生态足迹与生态承载力呈反方向发展趋势;在1990、1991、1996年,高台县耕地资源为生态盈余,其中1995年出现生态赤字,人均生态赤字由1995年的0.0220hm2/人逐年增加到2010年的1.2620 hm2/人,截止2010年生态赤字达到最高值。分析结果表明,高台县人口对耕地资源的利用压力逐年增加,目前已超出了耕地生态系统的生态承载力范围,加之人口逐年增长,高台县耕地生态环境处于不安全状态,故对现有耕地资源的利用模式是不可持续的。In order to make clear the state of sustainable development of arable land in Gaotai,a study was conducted with the model of Ecological Footprint to dynamically analyse the ecological footprint,ecological capacity and ecological deficit of arable land in Gaotai during 1990—2010. The results showed that the average personal ecological footprint gradually increased from 0.4745 hm2 to 1.9271 hm2 during 1990—2010.Whereas,the average personal ecological capacity declined from 0.7095 hm2 to 0.6651 hm2 during the same period of time.A conclusion could be drawn that the ecological footprint and ecological capacity development were just in the opposite direction.In 1990,1991 and 1996,the arable land presented an ecological surplus,and ecological deficit arose in 1995,which increased from 0.0220 hm2 to 1.2620 hm2 during 1995—2010,and ecological deficit was up to maxmized in 2010.All these indicate that the utilization of arable land in Gaotai is increasing year by year,which is beyond the capacity of arable land ecological system,and the population is also increaseing one year after another,so the arable land ecological system is at risk,and the present utilizing model of arable land in Gaotai is not sustainable.

关 键 词：耕地 生态足迹 生态承载力 生态赤字 高台县 

分 类 号：S181[农业科学—农业基础科学]