湖南望云山森林公园林地景观空间格局研究

摘要

Dissovled subcompartment data based on the renewal data of Wangyunshan Forest Park in 2009, used land type classification with ArcGIS 10. 2. Next, we used Fragstats 4. 2 to calculate the forest landscape index under the suitable grain size, used the O-ring statistic in Programita to analyze the spatial distribution pattern and the association. The results showed that under the grain size of 15 m, the area of pure forest land accounted for the absolute advantage, and constitute the main forest land landscape types with the bush forest land of national special provisions and young afforested land. Landscape types of forest land are rich but dominated by a small num-ber of landscape types. The value of SHDI is 1. 0506, and SHEI is 0. 4563. Also, landscape types of forest land were significantly clumped at fine scale, and distribute uniformly with the increase of scale and tend to be in ran-dom distribution finally, but the response of forest land landscape to scale change is different. There were positive ( negative) correlations among the main 3 forest landscape types at fine scales, and no significant correlations at coarse scales.%基于2009年望云山森林公园林地更新数据,利用ArcGIS 10.2以地类为分类单元,将小班数据进行融合,选取适宜分析粒度利用Fragstats 4.2对研究区林地景观格局指数进行计算,并利用Programita的O-ring统计方法对主要林地景观多尺度空间分布特征及其关联性进行分析.结果表明:在15 m分析粒度下,纯林地景观面积占绝对的优势,与特规灌木林地、 未成林造林地景观构成了森林公园主要的林地景观类型;森林公园林地景观类型丰富但受少数优势景观支配,SHDI值为1.0506,SHEI值为0.4563.3种主要林地景观的空间分布格局随尺度变化的趋势相似,均先呈聚集分布,经过轻微的随机分布后呈现均匀分布,之后趋于随机分布,但是各林地景观对尺度变化的响应有所不同;各林地景观类型均在中小尺度上呈正(负)关联性,在大尺度上无关联性.