基于测树学及遥感技术研究了江西千烟洲试验站人工林的碳蓄积特征。使用林木各器官的相对生长模型,结合林分调查,估算了标准木器官生物量和碳储量分布,进而获得单位面积及整个小流域森林的生物量和碳储量;利用IKONOS遥感图像进行目视判读,计算不同类型人工林的面积。林龄19年的马尾松、湿地松、杉木的单株标准木地上部分碳含量分别为29.0、25.6和23.3kg;杉木林、马尾松林、湿地松林、木荷林、针阔混交林地上部分生物量分别为14088、8768、7542、13215和8359g·m-2;人工林地上部分平均生物量和碳储量分别为8257和3979g·m-2;遥感估算的千烟洲面积为207.96hm2,其中78.8%为森林和柑橘园;全区地上部分总生物量和活体碳储量分别是13291和6336t;人工林碳储量占总碳储量的79.24%,是千烟洲试验区最大的碳库;研究区地上生物量从1983年的256g·m-2增长到2005年的6391g·cm-2,增长了25倍。人工造林显著地固定了大气中的碳。
The carbon storage of artificial forest was studied by means of forest survey and remote sensing in Qianyanzhou Ecological Station,Jiangxi Province. Based on allometric models in addition to field survey,the biomass and carbon storage were calculated for both average ground area and the whole small watershed. IKONOS imagery was used for extracting specific forest areas. The biomass of individual trees for Pinus massoniana,Pinus elliottii and Cunninghamia lanceolata,all 19 years old,were 29.0,25.6 and 23.3 kg,respectively. The above-ground biomass of C. lanceolata forest,P. massoniana forest,P. elliottii forest,Schima superba forest and mixed forest was 14 088,8 768,7 542,13 215 and 8 359 g·m-2 ,respectively. The average biomass and carbon storage of the artificial forest were 8 257 and 3 979 g·m-2 ,respectively; The area of the small watershed was 207.96 hm2, of which, 78.8% was forest and orange field; The total above-ground biomass and carbon storage of Qianyanzhou region were 13 291 t and 6 336 t, respectively; Plantation carbon storage accounted for the 79.24% of total carbon storage, which was the largest carbon pool; Aboveground vegetation biomass in this region was enhanced from 256 g·m-2 to 6 391 g·m-2 during the period 1983-2005, which increased 25 times. It is significant that artificial afforestation was an effective approach to the fixed carbon.
全 文 ：