摘要
基于遥感和景观生态学的方法,通过对1994、2004年两期遥感影像的解译分析,试图了解秦岭中低山区板凳河流域10a间景观格局变化及驱动力。结果表明:10a间有林地景观在板凳河流域内分布最广,占有绝对优势,其中天然次生有林地面积最大;10a间板凳河流域景观格局变化主要以景观斑块类型面积和景观破碎度变化为主要特点,其中景观斑块类型面积变化主要表现为人为影响林地、荒草地景观面积的增加,天然次生有林地、旱地景观面积的减少;景观破碎度变化主要表现为天然次生林地、人为影响林地、荒地3种景观斑块类型的破碎度的增加和旱地景观破碎度的减少;政策法规的导向作用和人为活动的干扰作用作为景观格局变化的主要驱动力,决定了生态环境的变化。
Using the RS and Landscape ecology, the landscape pattern change and driving forces of Bandeng river basin in medium mountain areas of the QinLing mountains were quantified by interpreting Landsat images from 1994 and 2004. The results showed that： during the past 10 years,the forest is the dominant type in the landscapes,with the natural secondary forest land being the most significant; the characteristics of landscape pattern change in the Bandeng river basin is featured with the changes of the landscape patch areas and landscape fragmentation. The changes of landscape patch areas are the increase of artificial woodland and grassland, the decrease of natural secondary forest and dry land;the changes of landscape fragmentation are the increase of the natural secondary forest, artificial woodland and grassland, the decrease of dry land The main driving forces of the landscape pattern changes are the government policy and artificial function, it decided the change of region environment.
出处
《农业系统科学与综合研究》
CSCD
2008年第4期458-462,共5页
System Sciemces and Comprehensive Studies In Agriculture
基金
长江水利委员会项目(2003-2007)
教育部科学技术研究重点项目(105152)
关键词
景观格局
驱动力
秦岭
板凳河流域
landscape pattern
driving force
Qinling mountains
Bandeng river basin
