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中国农学通报 ›› 2015, Vol. 31 ›› Issue (4): 250-257.doi: 10.11924/j.issn.1000-6850.2014-2089

所属专题: 资源与环境 农业生态 耕地保护

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

格尔木市盆地地区土地生态安全动态评价研究

马志昂,盖艾鸿,孙林军   

  1. (甘肃农业大学资源与环境学院,兰州 730070)
  • 收稿日期:2014-07-31 修回日期:2014-09-17 接受日期:2014-10-13 出版日期:2015-03-20 发布日期:2015-03-20
  • 通讯作者: 盖艾鸿
  • 基金资助:
    基金项目:青海省海西州土地整治规划项目“格尔木市土地整治规划”(037-036164)。

The Dynamic Study of Land Ecological Security in Gelmud’s Basin

Ma Zhi’ang, Gai Aihong, Sun Linjun   

  1. (College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou 730070)
  • Received:2014-07-31 Revised:2014-09-17 Accepted:2014-10-13 Online:2015-03-20 Published:2015-03-20

摘要: 为了进行区域土地生态安全评价研究,采用压力-状态-响应(PSR)模型,构建了土地生态安全动态评价模型,然后运用均方差法计算得到各指标的权重,再利用综合指数法计算格尔木市盆地地区的2000、2005、2010年3个不同时期土地生态安全分值,并进行等级划分。结果表明,生态安全度总体上呈上升趋势,土地生态安全综合指数从2000年的0.3740上升到2010年的0.5899,基本靠近良好状态。其中2000—2005年上升比较平缓,而2005—2010年上升强度比较大。后一阶段是前一阶段的3倍。

关键词: 谷子, 谷子, 水稻, ACGM标记, 标记可转移性, 多态性

Abstract: In order to do the evaluation on ecological security of regional land, the land ecological security assessment index system was built by using the model of ‘pressure-state-response’, then the author used mean squared error to calculate the weight of the each indicator, and used the method of comprehensive index method to calculate the land ecological security situation of the basin of Gelmud at the year of 2000, 2005, 2010 which were classified into different grades. The findings showed that: the degree of land ecological security was on the rise in general. Land ecological security composite index rose from 0.3740 in 2000 to 0.5899 in 2010, basic close to good condition. And from 2000 to 2005, the index rise was quite gently, from 2005 to 2010, the index rise was forceful. The latter stage was the former 3 times.