关键词: 杉木, 最优轮伐期, 土地期望值, 森林碳汇, 碳汇供给

Abstract:

Increasing the forest carbon sequestration has become the important measure to meet climate change. To the typical forest of Chinese fir advocate produce in south China as a case, On the basis of assumption about afforestation on bare land at land types with three kinds' site conditions and management strength, this paper uses the improved Chinese fir growth model and the modified Faustman-Hartman model to analyze the impact of increasing carbon sequestration incomes on forest management. The results indicated that consider the carbon yield will increase forest land's value as assets.The increase of carbon sequestration incomes will obviously increase the value of forest land; the increase of forest land's value as assets may make the lands for other uses transfer to the forest lands, the optimal rotation will show the extension trend with the increase of carbon sequestration's price. However, it has different influences for different kinds of forest lands. carbon supply of average and poor land will be more sensitive to carbon sequestration's price, which also provides the possibility to change the forest land management ways and further increase the forest land's forest carbon sequestration supply by the means of market and price. Chinese fir forest carbon sequestration supply were negatively correlated to interest rate and the price of timber. but the interest rate and the timber price changes on different types of woodland are various. Interest rate and timber price change to good land's forest carbon sequestration supply affect overall is not significant, but at a lower interest rate level or timber price reduce situation, carbon supply of middle and inferior forest land increase. The relation of carbon supply and interest rate change makes using monetary means to stimulate increase forest carbon sequestration as possible.

Key words: Chinese fir, optimal rotation, land expected value, carbon sequestration, carbon supply