摘要
草地是我国重要的生态资源,同时也是国家重要的生态屏障。在气候变化与人类活动双重因素的交互作用影响下,导致草原生态环境严重恶化,严重影响了我国的生态安全。利用遥感(RS)与地理信息系统(GIS)技术,结合地面实地考察,借助2000年和2010年的遥感影像,解译植被情况;利用单一土地利用类型动态度表达研究区一定时间范围内某种土地利用类型的数量变化情况,分析土地利用/植被变化动态变化趋势;通过建立土地利用程度综合指数模型,衡量土地利用程度的广度和深度;建立综合土地利用程度变化量模型,揭示土地利用的综合水平和变化趋势;建立土地利用转移矩阵定量描述各土地利用类型之间的转换情况。最终分析研究区近10年来的植被演替情况。
Grassland is the important zoology protective screen in our country.At the same time, it is also national important ecological barrier.In the dual factors of climate change and human activities under the influence of the interaction, the deterioration of the grassland ecological environment seriously, seriously affected the ecological security of our country.Remote sensing （RS）technology and geographic information system （GIS）were used in this research ,the previous vegetation situation had been inperpret by using the remote sensing image.The dynamic degree of a single land use type had been used to represent the quantity change of this land use type in the research area, and the dynamic variation trend of the landuse/vegetation cover changes have also been analysed.A comprehensive index model of land use level had been made to measure the level of land use.A comprehensive land use level model in variation had been built to reveal the comprehensive level and variation tendency of land use.A land use transition matrix had been made to describe the transformation between each land use type.
出处
《现代农业科技》
2015年第22期182-184,共3页
Modern Agricultural Science and Technology
基金
中国水科院科研专项项目(MK2013J09)
中央分成水资源费项目(1261430122054)
关键词
典型干旱草原区
植被变化
演替趋势
水分胁迫
转移矩阵
上东河流域
typical arid grassland
vegetation cover changes
succession trend
water stress
transition matrix
Shangdong River
