Analysis of changes of land cover using multispectral remote sensing information in the central forest reserve

Abstract

Институт проблем экологии и эволюции им. А.Н. Северцова, РАН Центрально-лесной государственный заповедник. Нелидовский р-н, Тверская обл. Поступила в редакцию 28.05.2012 г. По результатам анализа различий отражения солнечной радиации в спектральных каналах в двух сценах спутника Landsat за март 1986 г. и март 2010 г. установлен масштаб и характер изменений растительного покрова, для которого выявлен баланс между разрушением и восстановлением. Небольшое нарушение баланса происходит в результате жизнедеятельности бобров, приводящей к обезлесению пойм ручьев и рек первого-второго порядков. Показаны различия в темпах восстановления леса на вырубках и возникновение квазиустойчивых сообществ мелколиственных лесов на старопахотных землях, а так же разрушение сосновых лесов на верховых болотах, и лесов, прилегающих к болотам с увеличением площади последних. Ключевые слова: мониторинг, растительность, ландшафтный покров, лес, верховое болото, мультиспектральная дистанционная информация.

Solar Energy Transformation Strategies by Ecosystems of the Boreal Zone (Thermodynamic Analysis Based on Remote Sensing Data)

“…It can be assumed that, in terms of its parameters, the climate of the territory shifts towards the Atlantic period (6–7 thousand years ago), which, according to dating, marks the beginning of the formation of raised bogs on the territory of the Reserve [ 86 ]. Our analysis of the dynamics of the Reserve’s vegetation cover in recent years [ 87 ] and field observations show an increase in the renewal of broad-leaved tree species (maple, linden, hazel) in well-drained and warm relief positions and the expansion of sphagnum mosses in well-lit glades and under the forest canopy on flat and concave landforms. We also recorded an unambiguous increase in the areas of raised bogs, accompanied by waterlogging and drying out of adjacent forests.…”

Interannual variability of the ecosystem CO2 fluxes at paludified spruce forest and ombrotrophic bog in southern taiga

“…Excessive moistening coupled with spread of glacial clay soils at the territory make the study area favourable to paludification processes and peat formation. Large areas of the CFSNBR are covered by fens, bogs and paludified forests (Shulze et al, 2002;Puzachenko et al, 2014).…”

Radiative Entropy Production along the Paludification Gradient in the Southern Taiga

“…Under excessive moistening, some types of bogs exhibit intensive vertical growth, carbon accumulation, and may expand rapidly toward surrounding forests [25]. Modern investigations of [24] using remote sensing data showed that in 1986-2010, in the Central Forest Biosphere Reserve, the total bog area increased from 8% to 10% of the territory. Swamping of territories may result in the increasing instability of the energy balance and entropy production in the landscape of the southern taiga.…”

“…The most wide-spread ecosystems in CFBR ( Figure 1) are old spruce forests with a mixture of broad-leaved or small-leaved trees (59% of the core reserve area in 1986 and 49% in 2010), birch or aspen stands and fellings (32% in 1986 and 30% in 2010), restoring spruce forests at windfalls and burnt areas (12% in 2010), and bogs (9% of the core reserve area in 1986 and 11% in 2010) [24]. Puzachenko et al [24] reported that the bog area in the CFBR had increased by 20% in 1986-2010 due to the propagating of bogs toward surrounding forests and the destruction of swampy pine forests.…”

“…Puzachenko et al [24] reported that the bog area in the CFBR had increased by 20% in 1986-2010 due to the propagating of bogs toward surrounding forests and the destruction of swampy pine forests. This may be connected with a significant increase in winter temperature (by 4.0 • C in January) and annual precipitation in 1963-1999 [38], resulting in an increase of duration of mid-seasons.…”