关键词: 病害防治, 病害防治

Abstract:

In order to acquire the forest biomass and carbon storage of Shanxi Province and analyze its dynamic change trend, based on the data from the continuous forest inventories (CFI) in 1994, 1999, 2000, 2005 and 2010, combined with the carbon conversion coefficient method, it was estimated with the variable biomass expansion factor function (variable BEFF) method that was derived from the relationship between biomass and volume. The results showed that the total forest biomass of Shanxi Province increased 12441.15×104 t from 7104.85×104 t, respectively. The average total forest biomass increased 266.82×104 t, and its average annual growth was 3.76%. The average unit area biomass of forest increased from 31.7400 t/hm2 to 47.6307 t/hm2, respectively, and its average annual growth was 0.5297 t/hm2; also, the provincial carbon storage became from 3544.61×104 t to 6206.89×104 t, and forest carbon density from 15.8348 t/hm2 to 23.7630 t/hm2. Although the provincial carbon storage and forest carbon density were thus characterized with increasing, both unit area biomass and carbon storage were far lower than the national average level, and the average carbon density was far lower than the national average (44.91 t/hm2), and also the national average level (86 t/hm2). The provincial forest quality was still low and growth was poorer, it should be to improve forest management and give full play to land production potentiality.