From the situ - observation data of shallow and deep water regions at the coastal zone , it is shown statistically that the occurrency of the coupled ocean waves is more than those of the wind - induced waves and swell . the ratio of the coupled ocean waves at the yangtse river estuary ( especially at shallow sea region ) is nearby 70 % of all the ocean waves , for instance at the observation station dajishan 近岸(浅水)波浪测站和深水的波浪观测资料统计表明，混合浪的出现均大于纯风浪和纯涌浪，特别在浅水区域，例如大戟山海洋站，混和浪所占的比率接近70 。
Longling palynoflora comprises of 86 palynomorphs belonging to 61 families , and consist of angiosperms ( 69 . 0 % ) , gymnosperms ( 4 . 6 % ) , pteridophytes ( 24 . 1 % ) and algae ( 2 . 3 % ) . longling palynological data indicate a vertical paleovegetational landscape : humid evergreen broad - leaved forest occurred on the slopes near the deposit site , and dominant elements were castanopsis , lithocarpus , cycobalanopsis , mixed with ericaceae , anacardiaceae and sapindaceae etc , and abundant ferns grew in the forest ; the mixed coniferous / broad - leaved forest and coniferous forest distributed on the area of high elevation , dominant elements were tsuga , pinus , picea and abies 湿性常绿阔叶林分布在沉积地附近，以壳斗科的石栎属、青冈属和栲属为主，混生漆树科、桃金娘科、蓼科、大戟科和金缕梅科的枫香属等植物，林内蕨类植物丰富；针阔叶混交林分布在距沉积地较远海拔较高的山地，主要包括松属，铁杉属，罗汉松属和一些阔叶植物类群；云杉林、冷杉林和铁杉林分布在更高海拔的地区。
