关键词: 沙冬青, 沙冬青, 温度, 盐分, 育苗, 发芽

Abstract:

Based on the second class investigations of forest resources in 1999 and 2009, the geography information system ArcGIS and the landscape analysis program Fragstats 3.3 were introduced to study the dynamics of landscape patterns in Guposhan National Forest Park. The results showed that the main landscape type did not changed in the ten years but the proportion of the area covered by broad-leaf, shrub and Chinese fir forests rose from 80.44% to 95.41%. The landscape matrices were basically broad-leaf forest which rose from 63.63% to 75.82% in proportion. The amount of total patches has decreased from 301 to 174 and there was a downward trend when considering the mean shape index. The diversity index decreased from 1.233 to 0.862 while the dominant index increased from 0.846 to 1.217. The landscape tended to be sequential and stable, on the whole, with the succession from conifer forest to conifer-broadleaf forest and broad-leaf forest in turn.