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ArticleClimate impact on tree growth of selected tree species in Poland
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.Climate change is one of the greatest challenges facing the modern world. It has a profound impact on the natural and social environment. Policy makers and natural resource managers need information on the direction and potential scope of climate change in order to better anticipate its potential effects and implement measures to adapt to climate change. Forestry is an area where changes are already visible, and adaptation measures aimed at ensuring the sustainability of forest ecosystems, due to the long-life cycle of trees, should be initiated ahead of time. The study attempts to evaluate trends in changes in radial increments of selected tree species in the era of changing climatic conditions and their sensitivity to thermal and pluvial conditions. Several native tree species, typical for Polish forests, and an introduced species -Douglas fir (Pseudotsuga menziesii) were selected for analysis. The empirical material included incremental data of trees representing from a dozen to several dozen sites of individual species, located in various parts of Poland, and meteorological data from stations located close to the research plots. For each site, a residual chronology of annual increments was developed, which was the basis for the research on the climate-growth relationship. It was investigated which meteorological factors have a positive and negative impact on the size of annual increments of trees and it was determined how this relationship changes over time. It was shown that the stability of the climate signal in tree incremental sequences was maintained until the beginning of the 1980s. Later, an increase in the strength of the correlation between the standardized measures of radial growth of trees and the average air temperature or the amount of precipitation in some months was observed, which indicates a greater sensitivity of trees to the current ranges of thermal and pluvial conditions. Keywords: climate change, dendroclimatology, radial increments, climate-growth relationship ID: 3486956 -
ArticleLand use and land use changes by the farmers from mulberry (Morus alba) plantations to green forest tree based farming for income growth and sustainability in Malda district of India
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.Malda district was famous for two economic activities viz. Mango (Mangifera indica) cultivation and rearing mulberry silkworm (Bombyx mori). Earlier silkworm rearing was a flourishing cottage industry and every households of Kaliachak block reared silkworm for cocoon production. It was the major livelihood of rural farmers but they suffered heavily due to cheap import of silk from China. Thus, the backbone of farmers was crippled, hence they started cultivating various trees in mulberry fields along with agricultural crops for sustaining their livelihood. Present study was undertaken to know how farmers adjusted to new situation, their knowledge about trees, income growth and sustainability. It was observed that mulberry was raised as herb and leaves were fed to the silkworm larvae at home. Traditionally farmers planted Dalbergia sissoo trees on the border of mulberry fields but later on they started planting other trees. A few farmers uprooted their mulberry bushes and converted to Swietenia macrophylla plantation. Some farmers converted their entire land to Mango and Litchi chinensis orchards for long term gains. Besides, some traditional farmers, around 10% still continued with silkworm rearing for their livelihood security but planted few rows of trees like Tectona grandis, D.sissoo, Bombax ceiba, S.macrophylla and Acacia auriculiformis. Few big farmers converted their mulberry fields into ponds for fishery, however, planted Mango and Sissoo on border. The first crops inside the tree plantations were Maize, Papaya and Vegetables which gave farmers quick income. Later, Banana and Citrus were planted. These activities are still continuing, but timber harvesting has also started which will give high returns. These forest tree based land changes not only provided sustainable income growth to farmers, but also made them drought resilient leading to climate change mitigation and adaptation besides conserving plant biodiversity. Key words: Landscape management, Agriculture, Biodiversity conservation ID: 3475637 -
DocumentThe role of urban forests and trees in adaptation to climate change in dryland cities
Fifth Near East Forestry Week - Monday, 11 September 2023
2023Also available in:
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