tailieunhanh - Climate Change and Variability Part 12

Tham khảo tài liệu 'climate change and variability part 12', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 318 Climate Change and Variability First of all we should point out that the differences in stand height and basal area are totally positive for all comparisons reflecting effect of different factors. These positive changes vary from to 10 . Both species in south sites demonstrate a little bit higher height changes although basal area has no so clear changes. Unexpectedly the differences of growing stock for both species are significantly higher of height or basal area changes Fig. 4 reaching in some cases 22 . The effect is stronger for south sites and in Norway spruce stands. The nitrogen response was found to be sufficiently higher of temperature response. Fig. 6. Differences in total ecosystem carbon pools sum of trees dead wood and soil carbon as affected by diverse ecological factors. Symbols corresponds to Fig. 4 The differences of SOM pools Fig. 5 have the opposite trends in comparison with stand height basal area and growing stock. The higher is the positive impact of temperature growth and N deposition the stronger is a loss of organic matter in the soil due to more intensive soil C mineralization. In terms of SOM the effect of temperature increasing is stronger of the effect of N deposition. 319 Impact of temperature increase and precipitation alteration at climate change on forest productivity and soil carbon in boreal forest ecosystems in Canada and Russia simulation approach with the EFIMOD model The responses of total ecosystem carbon pools to climate warming and N deposition are very expressive Fig. 6 . In spite of the decrease of soil organic matter all ecosystems accumulate carbon because significantly higher rise of stand productivity. The differences are larger in managed forest. South forests and Norway spruce stands demonstrate significantly higher response to the climate warming. Simulation of climate change and forest management regimes at landscape level in European Russia. The generalised data of 200-year EFIMOD runs for 300-ha forest