摘要
利用HJ1A/1B-CCD数据,采用比值植被指数蓝藻水华识别方法分别提取巢湖2009、2010年各个月份的蓝藻水华,着重分析巢湖蓝藻水华时空分布特征。结果表明:巢湖蓝藻暴发一般从5、6月开始,到9月达到最大,10月下旬开始减少,11月基本消亡;蓝藻富集形成水华具有短周期的特点;由于受风力、环湖径流的影响,蓝藻暴发区域为西半湖西北部和正北部以及东半湖西北部和正西部;蓝藻核心暴发区域为巢湖西北部。
HJ1A/1B-CCD image wa used to extract algae bloom in Chaohu Lake in 2009 and 2010 with the ratio vegetation index identification method.Temporal and spatial distribution characteristics of algae blooms were discussed.The results showed that lake blue-green algae blooms usually started from May and June,reached the maximum in September,began to decline in October,died in November.Enrichment of the formation of algae blooms had short-period characteristics.Blue-green algal blooms had very short life cycle.Due to the effects of the wind and the runoff around the lake,blue broke out algae blooms were appeared in the northwest and western region in the west lake,and broke out in northwest and east region in the east lake.
出处
《安徽农业科学》
CAS
北大核心
2011年第21期12825-12827,12911,共4页
Journal of Anhui Agricultural Sciences
基金
安徽建筑工业学院硕博科研启动项目(2010KY205)
安徽省教育厅自然科学基金重点项目(KJ2009A021Z)
安徽省经济研究院"巢湖流域植被生态
蓝藻遥感研究"横向课题
关键词
巢湖
蓝藻水华
遥感监测
时空分布特征
Chaohu Lake
Algal blooms
Remote sensing
Temporal and spatial distribution
