4/30/2023 0 Comments Coppice vegetation![]() The AUC method generates a specific V-shaped time-signature, the vertex of which coincides with the thinning event and, as such, provides forest managers with another tool to assist decision making in the development of sustainable forest management strategies. Metrics derived from the MCARI2 time-series also demonstrated the capacity of the canopy to recovery to pretreatment coverage levels. MCARI2 data from both L8 and S2 reflected how the influence of treatment on the canopy cover decreases over the years, providing significant differences in the thinning year and the year after. ![]() Soil-Line VIs were compared to the Normalized Vegetation Index ( NDVI) revealing that the Second Modified Chlorophyll Absorption Ratio Index ( MCARI2) more clearly demonstrated canopy evolution tendencies over time than the NDVI. Canopy development was computed by comparing the area under curves ( AUCs) of different VI time-series annually throughout the study period. Time series data from Landsat-8 and Sentinel-2 were collected to calculate values for different VIs. Plots were subjected to one of the following forest management treatments: Control with no intervention (2800–3300 stems ha −1), Treatment 1, one thinning leaving a living stock density of 900–600 stems ha −1 and Treatment 2, a more intensive thinning, leaving 400 stems ha −1. For this, the changes produced at the canopy level by different thinning treatments and their evolution over time (2014–2019) were extracted from VI values corresponding to two trials involving 33 circular plots (r = 10 m). The aim was to identify optimal remote sensing Vegetation Indices (VIs) to use as time-sensitive indicators of the early response of vegetation after the thinning of sweet chestnut ( Castanea Sativa Mill.) coppice. Fire-hardy not only in the shade of the natural forests to surface fires, but fire-hardy also to the taungya fire which takes place when all the tree and bamboo growth on the ground is cut and burnt. Let it be accepted then that many of the species of the mixed deciduous forests are fire-hardy as young plants. A strategy to remotely monitor the development of the canopy after thinning using satellite imagery time-series data is presented. from the naturally appearing vegetation which has the vigour of coppice. Understanding and assessing how forests react to these changes is key for forest managers to develop and follow sustainable practices. Future restoration of coppice and growth of stools after coppicing is likely to be successful and worthwhile only if active measures are taken to reduce deer browsing damage and possibly deer populations as a whole.Forest management treatments often translate into changes in forest structure. trees until vegetation is suppressed after the first cutting cycle. Browsing damage is consistent with that expected at low to moderate levels of potential browsing intensity. Coppice is the term applied to woodland arising as vegetative shoots from cut stumps. Deer browsing damage was more pronounced in compartments with a low overstorey canopy cover, possibly due to the more luxuriant understorey coppice re-growth. There was also a weak effect of coppice history with restored coppice exhibiting less vigorous vegetation than continuous coppice. Deer browsing and overstorey cover reduced the density of the understorey. Deer browsing was assessed from signs of structural browsing damage and presence of deer. ![]() Gross vegetation structure in the years following harvesting was also examined. At 11 coppice woodlands in lowland England, coppice compartments were categorised based on their coppicing history (restored versus continuous), low and high overstorey canopy cover, and low and high deer browsing levels. This paper examines the effects of overstorey canopy cover, coppice restoration, and deer browsing on the growth, and structure of the coppice and other understorey vegetation. In parts of England areas of woodland previously coppiced are being brought back into active coppice management at a time when deer populations are increasing, and after decades with an absence of management.
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