[Application of GIS and integrated mathematic models on estimating forest land wood productiveness and solar energy use efficiency].
Based on the meteorological elements observation and mountain soil survey in Fujian Province, this paper approached the application of geographic information system (GIS) and integrated mathematic models on estimating the grid wood productiveness and solar energy use efficiency (SEUE) of regional forest land. The results showed that there was a significant quadratic correlation of annual mean temperature, precipitation and total solar radiation energy(TSRE) with longitude, latitude and altitude, and their multiple correlation coefficients ranged from 0.692 to 0.981. The regional annual mean TSRE, temperature and precipitation could be well estimated by GIS and integrated models of quadratic tendency curve, and linear, quadratic and quartic inverse distance weighted interpolation. These annual means estimated by the models did not differ greatly from observed data, and the t test values were 1.29, 0.12 and 0.06, respectively. The grid wood productiveness and SEUE of regional forest land in Fujian could also be well estimated with the aid of GIS and integrated models, which ranged from 2.32 m3 x hm(-2) yr(-1) to 18.61 m3 x hm(-2) yr(-1) and from 0.11% to 0.91%, respectively.
Xing
Shihe
S
College of Resource and Environment, Fujian Agriculture and Forestry University, Fuzhou, China.
Lin
Dexi
D
Shen
Jinquan
J
Cao
Rongbin
R
D018533:Biomass; D002681:China; D017753:Ecosystem; D040362:Geographic Information Systems; D008433:Mathematics; D008962:Models, Theoretical; D012993:Solar Energy; D014197:Trees / Q000254:growth & development*