Skógræktarritið - 15.05.2001, Side 137

Skógræktarritið - 15.05.2001, Side 137
published Cairngorms Forest and Woodland Framework (Cairn- gorms Partnership 1999). The Cairngorms contains a large part of the remaining Native Pine- wood resource of Scotland, but it also contains a number of other important habitats, notably heather moorland which 'com- petes' for much of the land suit- able for woodland. Based on FHN principles, priority wood- land management options and locations have been identified including enhanced management of the existing native woodland resource, priority linkage corri- dors and new native woodiand plantings identified, diversifica- tion opportunities on agricultural land and improved management of riparian woodlands. Preferred locations for non-native species were also identified. The Frame- work is supported by a number of maps which should be used in conjunction with the text. Figure 2 demonstrates the use of the model output in helping to identify corridors to link existing native woodlands, in this case, of Scots Pine in the Cairngorms, in effect to develop a Forest Habitat Network. By displaying only the woodland categories which are considered to have some poten- tial for pine, priority areas can be identified and resources targeted to them. For the first time in a strate- gy/policy document of this type (Cairngorms Partnership 1999), the expansion of montane scrub is a priority objective in specific parts of the Cairngorms. The modelling indicates that in two areas in particular, the existing native pine woodland is close to its natural limit and that natural regeneration, in broad terms, could achieve the 'natural’ tree line and provide a continuum of habitat from the woodland zone through montane scrub to the Figure 2. Site Suitability for Pine in the Cairngorms Partnership Area. unsuitable land on the mountain plateaux. However, a number of actions are required to enable this to happen, notably control of deer numbers and burning. Among the benefits which could accrue from this expansion are increased biodiversity and land- scape enhancement. 2. The UK Biodiversity Action Plan (BAP) programme Scotland does not have a reliable inventory of woodlands that includes species or habitat type. Given the demands of the Habitat Action Plans (HAP) with- in the BAP for the enhancement, restoration and expansion of a number of woodland types, this is a serious limitation. Dependant on the accuracy of the NWM predictions (by match- ing the predicted and actual woodland types where both exist), a more comprehensive picture of the current extent of different woodland types can be derived by extrapolation. Some further field validation would be necessary, but this approach should limit the amount of expensive field survey and help target resources. This inventory would act as a statement of the 'Current Status’ of woodland within HAPs and allow the vari- ous other elements of Habitat Action Plans to be developed from a more robust footing. This approach is more relevant and necessary for some woodland types than others, for example Upland Ashwoods. 3. The Natural Heritage Zone programme Scotland has been divided into 21 Natural Heritage Zones (Figure 3). These have been derived from SNH's work on Biogeographical Zonation and Landscape Character Assessment. Although the zones are not intended to be precisely determined, they do have distinctive features that dis- tinguishes them from their neigh- bours. It provides a Framework for SNH to prioritise conservation objectives in sympathy with the existing local character of the land resource. SKÓGRÆKTARRITIÐ 2001 1. tbl 135
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