tailieunhanh - báo cáo hóa học: " Mapping carbon sequestration in forests at the regional scale - a climate biomonitoring approach by example of Germany"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Mapping carbon sequestration in forests at the regional scale - a climate biomonitoring approach by example of Germany | Schroder and Pesch Environmental Sciences Europe 2011 23 31 http content 23 1 31 o Environmental Sciences Europe a SpringerOpen Journal RESEARCH Open Access Mapping carbon sequestration in forests at the regional scale - a climate biomonitoring approach by example of Germany Winfried Schrodert and Roland Pesch Ỷ Abstract Background The United Nations Framework Convention on Climate Change recognizes carbon C fixation in forests as an important contribution for the reduction of atmospheric pollution in terms of greenhouse gases. Spatial differentiation of C sequestration in forests either at the national or at the regional scale is therefore needed for forest planning purposes. Hence within the framework of the Forest Focus regulation the aim of this investigation was to statistically analyse factors influencing the C fixation and to use the corresponding associations in terms of a predictive mapping approach at the regional scale by example of the German federal state North Rhine-Westphalia. The results of the methodical scheme outlined in this article should be compared with an already-published approach applied to the same data which were used in the investigation at hand. Methods Site-specific data on C sequestration in humus forest trees dead wood and soil from two forest monitoring networks were intersected with available surface information on topography soil climate and forestal growing areas and districts. Next the association between the C sequestration and the influence factors were examined and modelled by linear regression analyses. The resulting regression equations were applied on the surface data to predicatively map the C sequestration for the entire study area. Results The computations yielded an estimation of mio t C sequestered in the forests of North Rhine-Westphalia corresponding to t ha. The calculated values correspond well to according specifications given by the literature. Furthermore the results are almost .