INSPIRE BW Biogeographical Regions Geographical Altitude Levels

The growing conditions of Baden-Württemberg for forest tree species are diverse. From this point of view, the country is divided into a large number of different regions. The regional structure first highlights the local characteristics that distinguish a region from the other regions of the country. The first level of the regional division consists of the seven growing areas. The division of the growing areas into regional units depends on the growth and competitive behaviour of the tree species, which depends on the climate. Within a regional unit, the climatic conditions should be similar. Regional units with large differences in altitude are therefore additionally divided vertically and zonally according to altitude levels. The zonal structure of the regional units includes the elevation levels: - planar - kollin - submontan - montan - highmontane The vertical extension of the elevation levels is not fixed to altitude meters, but to the climatic conditions within the respective regional unit. There is therefore no nationwide uniform elevation framework for the elevation levels in the Southwest German procedure.巴登-符腾堡州（Baden-Württemberg）的林木生长立地条件呈现出显著多样性。基于此，该州被划分为诸多不同的区域单元。该区域架构首先彰显出区分本区域与州内其他区域的本土特色。区域划分的第一层级包含7个生长大区。 生长大区进一步划分为区域单元，划分依据为林木的生长与竞争特性，而该特性由气候条件决定。在同一区域单元内，气候条件应保持一致。因此，海拔差异显著的区域单元会进一步依据海拔梯度开展垂直分带划分。 区域单元的分带结构涵盖以下海拔等级： - 平原带（planar） - 丘陵带（kollin） - 山麓带（submontan） - 中山带（montan） - 亚高山带（highmontane） 上述海拔等级的垂直分布范围并非以固定海拔数值划定，而是依据对应区域单元内的实际气候条件确定。因此，在德国西南部的这套区划方法中，并不存在适用于全联邦的统一海拔等级框架。