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作 者:胡文秋[1] 张琨[1] 张金盈[2] 郑智荣[3]
机构地区:[1]山东师范大学人口.资源与环境学院,山东济南250014 [2]山东省国土测绘院,山东济南250013 [3]中国环境科学研究院,北京100012
出 处:《资源开发与市场》2011年第5期388-390,F0004,共4页Resource Development & Market
基 金:中央级公益性科研院所基本科研业务专项重点项目"低温雨雪冰冻灾后典型群落的生态恢复监测与评价"(编号:2007KYYW21)
摘 要:以2008年1月的低温雪灾为背景,选择反映植被长势的植被覆盖度为研究对象,以受人类活动干扰最少、最能体现植被自然恢复的莽山保护区为研究区,以像元二分模型为基础,通过计算样区植被遥感直方图的拐点来确定NDVIsoil和NDVIveg,通过植被覆盖的变化情况来衡量低温雨雪后森林植被的恢复状况,并对不同地形条件下、不同林龄和树种的森林植被恢复情况进行了分析,以期为整个莽山乃至南方受灾地区的受灾程度评价提供方法支持,为灾后重建决策提供数据参考。Taking the snowstorm in January 2008 as background,this paper chose the vegetation coverage as the research object to reflect vegetation growing and selected Mangshan Projected Area with the least effect by human activities and best exemplifies the natural recovery of vegetation as study area.This paper used mixed pixel model to calculate vegetation coverage,took the turning point of the vegetation samples′ histogram to determine NDVIsoil and NDVIveg,and used the change of vegetation coverage to elevate the effect on forest vegetation forced by snowstorm.At the same time,this paper analyzed the effect on vegetation forced by snowstorm in the aspect of different terrain and the trees of different ages and species.This paper aimed at providing method support of disaster assessment and data support on decision-making to rebuild vegetation in Manshan Projected Area,even the south.
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