Wu Nan, Gao Ji-Xi, Ricketts Taylor H, Olwero Nasser, Luo Zun-Lan
Chengdu Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China.
Ying Yong Sheng Tai Xue Bao. 2010 Feb;21(2):409-14.
Aiming at the fact that the current approaches of evaluating the efficacy of ecosystem provisioning service were lack of spatial information and did not take the accessibility of products into account, this paper established an evaluation model to simulate the spatial distribution of ecosystem provisioning service and its economic value, based on ArcGIS 9. 2 and taking the supply and demand factors of ecosystem products into account. The provision of timber product in Laojunshan in 2000 was analyzed with the model. In 2000, the total physical quantity of the timber' s provisioning service in Laojunshan was 11.12 x 10(4) m3 x a(-1), occupying 3.2% of the total increment of timber stock volume. The total provisioning service value of timber was 6669.27 x 10(4) yuan, among which, coniferous forest contributed most (90.41%). Due to the denser distribution of populations and roads in the eastern area of Laojunshan, some parts of the area being located outside of conservancy district, and forests being in scattered distribution, the spatial distribution pattern of the physical quantity of timber's provisioning service was higher in the eastern than in the western area.
针对当前生态系统供给服务效能评估方法缺乏空间信息且未考虑产品可达性的问题，本文基于ArcGIS 9.2，考虑生态系统产品的供需因素，建立了一个评估模型来模拟生态系统供给服务及其经济价值的空间分布。利用该模型对老君山2000年木材产品的供给情况进行了分析。2000年，老君山木材供给服务的实物总量为11.12×10⁴立方米/年，占木材蓄积量总增长量的3.2%。木材供给服务总价值为6669.27×10⁴元，其中针叶林贡献最大（90.41%）。由于老君山东部人口和道路分布较密集，部分区域位于保护区外且森林分布零散，木材供给服务实物量的空间分布格局为东部高于西部。
