Huang Cong-De, Zhang Jian, Yang Wan-Qin, Tang Xiao
College of Forestry & Horticulture, Sichuan Agricultural University, Ya' an 625014, Sichuan, China.
Ying Yong Sheng Tai Xue Bao. 2007 Dec;18(12):2687-92.
Based on the modeling of forest biomass and timber volume and the 1974-2004 forest inventory data, the spatiotemporal variation of carbon density and storage in forest vegetation in Sichuan Province was studied. The results showed that the forest carbon storage was increased from 300.02 Tg in 1974 to 469.96 Tg in 2004, with an annual increment of 1.51%, which suggested that the forests in Sichuan Province were the sink of CO2. However, owing to the increase of plantations, the average carbon density of forest vegetation decreased from 49.91 Mg x hm(-2) to 37.39 Mg x Shm(-2), implying that Sichuan forests had a great potential of carbon sequestration through artificial forest management. The carbon storage in Sichuan forests had a spatial heterogeneity, and the ranked order was northwest alpine gorge area > southwest mountainous area > low-mountain area > hilly area > western plain. Forest carbon density increased from southwest area to northwest area, with the order of hilly area < northern plain < southwest mountain area < low-mountain area < northwest alpine gorge area. It was suggested that forest management according to different sub-regions would improve the potential of carbon sequestration in Sichuan forests.
基于森林生物量和木材蓄积量模型以及1974 - 2004年森林资源清查数据，研究了四川省森林植被碳密度和碳储量的时空变化。结果表明，森林碳储量从1974年的300.02 Tg增加到2004年的469.96 Tg，年增长率为1.51%，这表明四川省森林是二氧化碳的汇。然而，由于人工林面积增加，森林植被平均碳密度从49.91 Mg·hm⁻²降至37.39 Mg·hm⁻²，这意味着四川森林通过人工林经营具有很大的碳汇潜力。四川森林碳储量具有空间异质性，排序为西北高山峡谷区＞西南山区＞低山区＞丘陵区＞川西平原。森林碳密度从西南地区向西北地区增加，顺序为丘陵区＜北部平原＜西南山区＜低山区＜西北高山峡谷区。建议根据不同亚区域进行森林经营，以提高四川森林的碳汇潜力。
