秦岭火地塘林区景观格局破碎度分析

Study on Landscape Fragmentation of QinlingHuoditang Forest Region

秦岭火地塘林区原生森林景观曾因森林主伐遭到严重破环,经过20多年的恢复,到1988年该地区基本形成以次生天然林和人工林为主的森林景观格局。利用该地区1988年森林资源二类调查资料,对天然及人工干预形成的火地塘林区景观格局破碎化程度进行了分析。结果表明:天然林的破碎化程度比人工林低,并且主要林分破碎度明显低于其它林分,同样外界干扰下,树种的生长习性决定其破碎化程度。

The original forest landscape pattern of Huoditang forest region had been damaged because of cutting down. After 20 years this region had formed a landscape pattern made of natural secondary forests and plantations. Based on class Ⅱ investigation to forest resources of Huoditang forest region in 1988, the landscape fragmentation of this place was studied. The result shows that the fragmentation of natural secondary forests is lower than plantations and main forests are lower than other forests. The growth habit of trees decides the fragmentation under same outside disturb.