It is shown from the estimation results that the resource density of Symlectoteuthis oualaniensis in the investigation area was higher with a CPUE value ranging from 0.2 to 8.3 squids per line per hour,the dominant CPUE value group was in the range 1 to 4 squids per line per hour,which accounts for 63.1 percent of the total number of fishing stations, and the ensemble average CPUE was 2.22 squids per line per hour.
This paper has established dynamic forecast model on the grcwth of different dominant trees (group), and putted forward using successive growth model to actualize the update of all main measure factors on different dominant trees (group).
In order to update the forest resource data of subcompartment in forest bureau and forest farm in natural forest region without human disturbance, combined with integrated stand model, stand\|level growth model group is developed based on 848 permanent plots of forest management inventory in 1997, taking Wangqing Forest Bureau in Jilin province as an example.
Based on the large quantity of water- supply prospecting informations, reviewed in detail for sandstone of Luohe formation on its regional structural location, distribution and change law of thickness, features of pore and fracture, characteristics of waterpower, dynamic change, features of water quality, environmental hydrogeological conditions and so forth;
and analysed the conditions of recharge, watershed, drain of groundwater in sandstone of Luohe formation; and indicated that sandstone of Luohe formation has wide area of distribution, large thickness, and there are abundant ground water and good water quality, so possess forming condition of large water supply.