福建省林地林木产量和光能利用率评价  

GIS Based Assessment of Yield and Solar Energy Use Efficiency of Forestry Land in Fujian Province

作　　者：邢世和[1] 曹榕斌[1] 沈金泉[1] 

机构地区：[1]福建农林大学资源与环境学院,福州350002

出　　处：《资源科学》2005年第6期76-83,共8页Resources Science

基　　金：福建省自然科学基金项目资助"基于GIS技术的区域农用地评价"(编号:B0010018)

摘　　要：利用福建省气象要素观测及林地土壤调查资料,借助GIS和数学模型集成技术进行区域林地林木产量和光能利用率栅格空间分区评价.结果表明福建省林地林木高、中、低产量区面积分别为230.97×104hm2、657.17×104hm2和3.90×104hm2,分别占全省林地总面积的25.89%、73.67%和0.44%,表明全省林地总体质量较高,多数林地的林木产量介于13.64m3/hm2～15.99m3/hm2·年,其中高产林地主要分布于南平、龙岩、三明和漳州4市,合计面积183.57×104hm2,占全省高产林地总面积的79.48%.全省林地高、中、低光能利用率区面积分别为473.76×104hm2、416.33×104hm2和1.95×104hm2,分别占全省林地总面积的53.11%、46.67%和0.22%,其中高光能利用率林地主要分布于南平、三明、龙岩和福州4市,合计面积为392.14×104hm2,占全省高光能利用率林地总面积的82.77%,其光能利用率介于0.66%～0.91%.The forestry yield and solar energy use efficiency of regional forestry land in grid was calculated with the materials of weather observation and forestry soil investigation in Fujian based on GIS integrated with mathematic models. The division of forestry yield and solar energy use efficiency of regional forestry land are evaluated by dynamic cluster analysis. The results show that the forestry land areas of high, medium and low yields in Fujian are 230.97 × 10^4hm^2 ,657.17 ×10^4hm^2 and 3.90 ×10^4hm^2 which are 25.89 %, 73.67 % and 0.44 % of the total, respectively. The yields of most forestry land in Fujian range from 13.64m^3/hm^2·a to 15.99m^3/hm^2·a. The high yield forestry land mainly distributed in Nanping, Longyan and Sanming prefecture, the areas are 183.57 × 10^4hm^2 which is 79.48% of total high yield forestry land. The medium yield forestry land mainly dispersed in Nanping, Sanming and Longyan prefecture, the areas are 411.62 × 10^4hm^2 which is 62.63 % of the total medium yield forestry land. The low yield forestry land mainly distributed in Ningde, Nanping and Sanming prefecture, the areas are 2.88 × 10^4hm^2 which is 73.86% of the total low yield forestry land. The forestry land areas of high, medium and low solar energy use efficiency in Fujian are 473.76 × 10^4hm^2 ,416.33 ×10^4hm^2 and 1.95 × 10^4hm^2 which are 53.11% ,46.67% and 0.22% of the total, respectively. The forestry land with high solar energy use efficiency ranges from 0.66 % to 0.91% mainly distributed in Nanping, Sanming, Longyan and Fuzhou prefecture, the areas are 392.14 ×10^4 hm^2 which is 82.77 % of the total with high solar energy use efficiency. Those with medium solar energy use efficiency range from 0.39 % to 0.65 % mainly distributed in Nanping, Sanming, Ningde and Longyan prefecture, the areas are 296.78 × 10^4 hm^2 which is 71.28 % of the total with medium solar energy use efficiency. Those with low solar energy use efficiency range from 0.11% to 0.38% mainly distributed in Sanming,Nanping, Quanzhoiu and N

关 键 词：GIS 数学模型 林地 林木产量 光能利用率 分区面积 

分 类 号：S718.5[农业科学—林学]