松华坝水库流域景观格局及其动态变化研究

Landscape pattern and its dynamic variation in the songhua reservoir basin

自1981年松华坝水源保护区建立以来,通过封山育林、人工造林等措施,流域内灌木林→有林地、荒草地→灌木林的转移明显,9年间有林地的面积增加了59.78%;通过有选择地退耕还林,流域的中下游是退耕还林重点区域,同时为了满足耕地的需求,流域的中上游部分灌木林被开垦为旱地;从数量和空间上看,整个流域的景观格局变化向好的方向发展.但从景观指数的观点看,整个流域的景观格局向不利的方向发展.最终得出目前松花坝水库流域存在的问题,即注重数量却忽视了景观质量,反映了整个流域在治理时缺乏合理的规划.

Since the establishing of fountainhead-protect of Songhua Dam in 1981,the transform of shrubbery converted to woodland and grass-land converted to shrubbery was in evidence in this basin.During the nine years,the area of woodland had increased 59.78%.By the selective converting plantation to woodland,the middle and lower reaches of this basin is the emphases area.At the same time,in order to satisfy the requirement of plantation,some shrubbery had reclaimed to plantation in the up and middle reaches of this...