Az esztétikai alapú várostervezés és kapcsolata a tájépítészettel a XX. században. Út a "New Urbanism" és a gyalogosbarát város elméletéhez

Kutatásunk két korszakot vizsgál alaposabban. A XIX. század végének és a XX. század első évtizedeinek városépítészetelméletéből a „Civic Art”-ot mutatjuk be, valamint az ennek alapjain, a modernizmus városépítészetének kritikájaként létrejött, az 1960-as évektől kezdődő „Urban Design”-t. Mindkét éra jellemezhető egy olyan tervezői attitűddel, városépítészet elméleti kultúrával, amelynek célja a jól használható terek (Cultures of good place-making) kialakítása volt (Bohl, 2009). A két korszak összehasonlításánál fontos megemlíteni, hogy egyrészt sok szempontból azonos gazdasági-társadalmi jelenségek zajlottak, másrészt az ezekre nyújtott reakció azonos társadalmi csoportoktól érkezett. Az előbbi példájaként lehet említeni a drámai gazdasági és technológiai változásokat, a gyors iramú városfejlődést és migrációt, valamint a hagyományos városközpontok felbomlását. Az ezekre a problémákra felmerülő válaszok mindkét esetben a tervező mellett a közösségek építésében szerepet játszó szakmák (ingatlan és üzleti szféra, ipar, államszervezet), valamint a lakosság különböző csoportjaiban fogalmazódtak meg (Bohl, 2009). Tanulmányunk a tájépítészet szerepét kívánja feltérképezni ezen irányzatokban, s választ keres arra, hogy szakmánk jelentősége és érdekeltsége hogyan változott az idők során. A kérdés, hogy a napjainkig meghatározó „urban design” teoretika a városi szabadterek alakítása terén tudott-e a „Civic Art” korszakának tanulságaiból meríteni?

Stylization: a method for preserving the character of climate sensitive habitat

Stylization is a method of ornamental plant use usually applied in urban open space and garden design based on aesthetic consideration. Stylization can be seen as a nature-imitating ornamental plant application which evokes the scenery rather than an ecological plant application which assists the processes and functions observed in the nature. From a different point of view, stylization of natural or semi-natural habitats can sometimes serve as a method for preserving the physiognomy of the plant associations that may be affected by the climate change of the 21st century. The vulnerability of the Hungarian habitats has thus far been examined by the researchers only from the botanical point of view but not in terms of its landscape design value. In Hungary coniferous forests are edaphic and classified on this basis. The General National Habitat Classification System (Á-NÉR) distinguishes calcareous Scots pine forests and acidofrequent coniferous forests. The latter seems to be highly sensitive to climate change according to ecological models. The physiognomy and species pool of its subtypes are strongly determined by the dominant coniferous species that can be Norway spruce (Picea abies) or Scots pine (Pinus sylvestris). We are going to discuss the methodology of stylization of climate sensitive habitats and briefly refer to acidofrequent coniferous forests as a case study. In the course of stylization those coniferous and deciduous tree species of the studied habitat that are water demanding should be substituted by drought tolerant ones with similar characteristics. A list of the proposed taxa is going to be given.

Comparison of different space indexing methods for ecological evaluation of urban openspaces

Nowadays we meet many different evaluation methods regarding the ecological performance of green surfaces and parks. All these methods are extremely valuable in determining how well a green surface performs from ecological aspect and to what extent the environment were damaged if these sites would be built or would be developed any other way causing reduction of green surfaces. The goal of the article is to clarify the differences between two evaluation methods (GSI – Green Space Intensity, BARC – Biological Activity Rate Calculation) suitable for urban green infrastructure analysis and to see if any significant difference can be observed evaluating the same site by these methods. Our research sites are in Budapest and their sizes vary between 2,5-8 acres. The most important aspects of site analysis are the following: size and boundaries of the park, existence or lack of water features, the characteristics of their surfaces and the complexity of vegetation. We summarize the data of the site analysis in tables, make a summarizing diagram for visual representation and draw conclusions from the results. As a final step, we evaluate how these two evaluation systems relate to urban open space developments.

Stylization: a method for preserving the character of climate sensitive habitats. A case study of acidofrequent mixed forests

Stylization is a common method of ornamental plant use that imitates nature and evokes the scenery. This paper discloses a not yet proposed aspect of stylization, since the method offers the possibility of preserving the physiognomy of those habitats that seem to vanish due to future climate change. In addition, novelty of the method is founded also on that vulnerability of the Hungarian habitats has been examined by the researchers only from the botanical and ecological point of view so far and not in terms of its landscape design value. In Hungary, acidofrequent mixed forests appear to be highly sensitive to climate change according to ecological models. We are going to discuss the methodology of stylization of climate sensitive habitats and briefly refer to acidofrequent mixed forests as a case study. Those coniferous and deciduous tree species of the studied habitat that are water demanding are proposed to be substituted by drought tolerant ones with similar characteristics, and an optionally expandable list of these taxa is presented. Based on this the authors suggest experimental investigations of those of the proposed taxa for which the higher drought tolerance is based on observations only.