利用复杂网络理论研究三峡库区流域水华暴发  

Study of Algae Bloom in the Three-Gorges Reservoir Region Based on Complex Networks Model Theory

作　　者：胥昌纯 卢挺 陈刚才[2] 

机构地区：[1]重庆市巴南区环境监测站,重庆401320 [2]重庆市环境保护局,重庆401147

出　　处：《西南师范大学学报（自然科学版）》2011年第3期240-244,共5页Journal of Southwest China Normal University(Natural Science Edition)

基　　金：国家自然科学基金项目(20877105);国家水体污染控制与治理科技重大专项(2009ZX07104-001)资助

摘　　要：根据复杂网络(CNs)理论初步建立三峡流域的水华暴发动力学模型,利用水华暴发的三类因素建立起水华暴发CNs无边接连基本模型图,参考实际水域水华暴发因素设定各节点子节点范围,建立各节点的边连接,从而初步建立水华暴发的CNs模型.模型中代入2007年春季嘉陵江、长江和2002年乌江"黑潮"8月份乌江渡水库监测数据,计算得出两个区域水华暴发CNs模型的平均路径长度L和聚类系数C,发现发生水华的流域平均路径长度L越小流域水华暴发的可能性越大,且现场监测数据与CNs理论结果相符.同时,水华暴发流域的聚类系数比未暴发流域小,表明水华暴发前后聚类系数C是一个先增加后减少再增加的过程.因此水华暴发周期内(暴发前期、暴发时期、消退期),各因素间的相互作用是先增强后减弱再增强的过程.Use the Complex Networks（CNs） theory to establish the dynamics model of the algal bloom in the three-gorges valley basically.This model firstly classifies the inducement of the algal bloom to three kinds and establish the no-connection inducements relation figure.And then to set the range of the inducement in the figure.Finally to consult the known literature to establish the border connection of the inducement in order to describe the algal bloom with the CNs model.In the end to use the actual inspect data in the Jialingjiang river and the Yangtze River in the pring of 2007 and the Wujiangdu reservior in the August of 2002 to calculate the average path length and the clustering coefficient of the CNs model of the algal bloom and it is found that the L in the area of water bloom is smaller.It explains that the smaller the L is,the easier is the possibility of the algal bloom,which fits in with the local results in this water area.Meanwhile,the coefficient of algae bloom in this water area is smaller than that of non-water bloom in this area.It demonstrates that at the period of algae bloom the coefficient of water bloom increases at first and then decreases and finally increases.Therefore,at the period of algae bloom（previous time of algae bloom,time of algae bloom,fadeaway time of algae bloom）,the mutual effection of algae bloom factor strengthens at first and is weakened then and strengthens finally.

关 键 词：藻类 水华 复杂网络 平均路径长度 聚类系数 

分 类 号：X52[环境科学与工程—环境工程]