RS和GIS支持的南瓮河自然保护区景观变化驱动力研究

利用2000年和2010年遥感影像作为基本信息源,在RS和GIS技术的支持下,并结合地面资料对南瓮河保护区景观空间格局的变化情况及其驱动力进行了分析。结果表明：2000—2010年,南瓮河自然保护区景观类型没有明显变化,主要以森林和草本沼泽为主;森林沼泽和道路呈增加趋势,而沼泽化草甸、灌丛沼泽、永久性河流变化较小,呈现缓慢的减少趋势,森林群落呈现退化的趋势;景观异质性在增大,破碎化程度在提高;森林采伐和道路修建等人为干扰是景观格局时空演变的驱动力之一,火灾引发的森林及沼泽湿地大面积过火是湿地干扰的主要因素。

Driving Forces of Landscape Changes in Nanweng River Nature Reserve Based on RS and GIS

Taking remote sensing of Landsat ETM in 2000 and Landsat TM in 2010 as basic information sources ,in support of RS ＆amp; GIS technology ,combined with ground data ,the changes of landscape pattern and its driving forces in Nanweng River were analyzed .Result shows that ：from 2000 to 2010 ,the landscape types in Nanweng River Na-ture Reserve have no significant change ,mainly in forests and marshes ;the areas of forest swamp ＆amp; road increase , while the swamp meadow ,shrub swamp ,permanent river have small changes with a tendency of decreasing ;forest community appear a trend of deterioration .Landscape heterogeneity increases .The degree of fragmentation im-proves .Forest harvesting and road building as human disturbance are the driving force of the evolution of landscape spatial pattern ,forest and wetland area caused by fire was the main factor of wetland interference .