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Rosnące zapotrzebowanie społeczne na pozagospodarcze funkcje lasu zmusza leśników do poszukiwania metod równoważenia znaczenia wszystkich funkcji. Do realizacji nowych zadań leśnictwu niezbędne są dane, które pozwolą określić zdolność lasu do spełniania wielostronnych funkcji i aktualny stopień ich realizacji. Jednym ze sposobów pozyskania takich informacji może być opracowanie punktowej metody oceny funkcji lasu. Prezentowana praca jest próbą weryfikacji opracowanej metody waloryzacji funkcji lasu, polegającej na analizie funkcji lasu w zależności od takich cech jak typ siedliskowy lasu, gatunek panujący oraz wiek gatunku panującego.
In years 1970−2002, in Poland forest damage zones were distinguished within the framework of forest management works. Since 2003 degrees of stand damage have been determined. This study presents basic characteristics of the methods employed for these purposes concerning the necessity to elaborate a new method of determination of degrees of stand damage. The establishment of forest damage zones and degrees of stand damage cannot be treated as one of the forms of monitoring because in order to determine their range, no observations on the permanent plots and – within their confines – on the same sample trees were and are carried out. Over the time, evaluation criteria or/and ways of establishment of the extent of damages have been undergoing considerable and significant methodological changes and modifications. In terms of dynamically altering quantitative and qualitative impact of different factors affecting forest environment, 10 years period of observation repeatability is far too long to use this information as an indicator of occurring changes. In practice, it was and it still is impossible to determine objectively trends and directions of changes taking place in a given object, which is one of the objectives of forest monitoring. The concept of damage zone should be understood not only as an area of grouping the stands of the same or similar damage, but, equally importantly, as those which happen to be under the influence of the same factor exerting its influence at the same level. Therefore, when determining the range of zones, the following three actions should be taken into consideration simultaneously: complex crown evaluation, dendrometric measurements and monitoring of the effect of the causative agent. In order to trace the trends of the changes on the study plots, the same sample trees must be subjected to evaluations and measurements. From the point of view of the time perspective, exam− inations should be carried out every 5 years (assessment of the crown condition and dendrometric measurements) or on a continuous basis (monitoring of the effect of the causative agent) irrespective of the forest taxation. It is also advisable to consider possible use of contemporary remote sensing techniques to determine the range of zones and degrees of damage, which preliminary can be used to establish the range, intensity and kind of the damages.
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In Poland, private forests cover the area of 1,774,698 ha, which constitutes 19.2% of total forest area in the country. It is assumed that their actual share is much bigger, because about 300,000 ha of agricultural grounds covered with secondary succession forests, have not been classified as a forest grounds. In 2013, the complete and actual forest management documentation was prepared by 68.7% of private forests. The stand tending, especially commercial thinnings, cannot be legalized without mentioned documentation. What is more, the update of the Forest Data Bank was made according to the incomplete information on forest description and regulation of forest utilization. Nevertheless, private forests are an important ecological and economical element of Polish land use, and it is supposed that their importance will increase in the future. In Poland, there are some certain problems and expectations related to the private forests. The aim of the paper is to present selected aspects on private forests like their history, legal basis, and problems that occur during the preparation of documentation. The private forests have never been given proper consideration. The owners did not have an organized system of aid and consultancy. In 1991, existed separated legal basis were replaced by a common regulations for all types of the property of the forests. Poland’s accession to the EU caused the growth of expectations of private forests. Unfortunately, previous neglects, resulted mainly from the agricultural reform after 1944, weren’t eliminated, and their effects are still noticeable. Present legal basis is insufficient and sometimes imprecise. Another problem is the lack of supervision in case of the abridged forest management plan or forest inventory. Furthermore, the Forest Act does not precise who is to pay for preparing these documents. Also, the legal character of abridged forest management plan is often discussed. Private owners often treat forests as a source of financial profits by commercial thinnings or conversion of forest land into building land. Owners do not seem to be interested in the forest regeneration or forest tending as these are source of cost. Also non−productive servicing is not their goal. There is a need for elaboration of economical and legal solutions, which would make amends to private forest owners servicing some social or ecological functions. The supervisory authorities should get clear procedures related to the private forests.
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