[Comparison of artificial neural network with compatible biomass model for predicting aboveground biomass of individual tree].

Forest biomass is an important index in forest development planning and forest resource monitoring. In order to provide a more efficient and low-biased method for estimating individual tree biomass, we introduced artificial neural network here. We used the data of aboveground biomass of 101 trees harvested from the Dongzhelenghe Forest Farm in Heilongjiang Province to develop four aggregation model systems (AMS), based on different combination of the variables (diameter at breast height, tree height, crown width).

[Spatial and temporal variations of the responses of radial growth of to climate in the Daxing'anling Mountains of Northeast China].

Following the distribution characteristics of in Daxing'anling Mountains, nine sampling sites along a latitude gradient were set up to analyze the spatial difference and temporal dynamic in the responses of radial growth of . to climate. Overall, the radial growth of .

[Study on changes of intraocular pressure within 24 hours in primary open angle glaucoma and normal eyes].

Objective: To analyze the discipline of intraocular pressure (IOP) variation, through circadian intraocular pressure monitoring in primary open-angle glaucoma (POAG) patients and normal controls, with a view to provide basis for individualized treatment of glaucoma.

Methods: Subjects were enrolled from the outpatients of Shanghai Beizhan Hospital and Eye and ENT Hospital of Fudan University, which were diagnosed as primary open angle glaucoma, from April 2006 to April 2009. Totally there were 102 cases of patients and 83 cases of normal volunteers.