摘要
作为秦岭山脉的东延余脉,伏牛山山地效应研究意义重大。文章基于ArcGIS9.3空间分析功能,对伏牛山南北两侧的水热因子、土地覆被和净初级生产力时空格局变化进行了对比分析,结果表明:北坡极端低温和均温明显低于南坡(-2.88℃和-1.7℃)、极端高温明显高于南坡(+1.35℃),而年降水量北坡则比南坡低14.41%;伏牛山北坡部分常绿针叶林转换为落叶阔叶林,2001—2004年间的落叶阔叶林面积比重分别为:52.4%、55.2%、63.0%和70.9%;2001—2004年间的净初级生产力有增大趋势,尤其是东部区域。研究结论丰富了秦岭-伏牛山作为主要气候区和生态区分界线的理论依据,同时也丰富了山地生态学理论。
The research on barrier function of Funiu Mountain is of great significance, which is the odd arterie of Qinling Mountains. The spatio-temporal patterns of the hydrothermic factors, land cover and net primary productivities between the north and south of Mt. Funiu were analyzed using a geographical information system （ArcGIS9.3）. The results showed that, first, compared with the studied parameters in the south side, the north side of Mt. Funiu is lower 2.88 ℃in annual minimum temperature, lower 1.7 ℃ in annual average temperature, and higher 14.41 percent in annual precipitation. Second, the proportions of deciduous broad-leaved forest area of 2001 to 2004 were 52.4%, 55.2%, 63.0%, and 70.9%, due to conversion of the vegetation types from evergreen coniferous forest to deciduous broad-leaved forest. Third, the increasing trend of net primary productivities was found in both sides of Mt. Funiu from 2001 to 2004, especially in the eastern area. The conclusions in this study elucidated the boundary effect of Qinling Mountains, and enriched the theory system of mountain ecology.
出处
《生态环境学报》
CSCD
北大核心
2013年第5期761-766,共6页
Ecology and Environmental Sciences
基金
国家自然科学基金项目(41040012)
关键词
阻隔效应
水热因子
土地覆被
NPP
伏牛山
barrier effects
hydrothermic factors
land cover
net primary productivity
Mt. Funiu
