关键词: 土壤盐度, 过氧化物酶, 生态解剖, 输水性能, 材质

Abstract: Ecological footprint (EF) is one of the most important indicators in assessing sustainable development status and capacity.In this paper,the EF of Yanbian forest region was calculated and analyzed by using the statistical yearbooks and forest yearbooks from 1996 to 2002.The results showed that throughout the study period,the EF per capita decreased,ecological carrying capacity (ECC) per capita almost had no change,and ecological surplus per capita increased.The EF per 10⁴ yuan GDP per capita of Yanbian,which decreased from 1996 to 2002,was similar with that in western China,and distinctly higher than that in eastern China.The forestland EF kept a steady status,while the forest production footprint (FPF) and forest export footprint (FEF) decreased.After the implementation of Natural Forest Protection Program (NFPP),the mean value of FPF and FEF reduced by 0.341 and 0.327 hm²·cap^-1(46.32% and 54.94%),respectively.In conclusion,the regional and forest development in Yanbian were sustainable,and the implementation of NFPP was favorable to the improvement of sustainable development capacity.However,the development capacity was still lower than those in forest-developed countries.Therefore,it is very necessary to improve forest productivity and resource use efficiency,and to scientifically manage forest ecosystems in the future.

Key words: Soil salinity, Peroxidase(POD), Ecological anatomy, Water conductance, Wood quality