نتایج جستجو برای: forest range

تعداد نتایج: 766089  

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2011
Robert M Ewers Raphael K Didham Lenore Fahrig Gonçalo Ferraz Andy Hector Robert D Holt Valerie Kapos Glen Reynolds Waidi Sinun Jake L Snaddon Edgar C Turner

Opportunities to conduct large-scale field experiments are rare, but provide a unique opportunity to reveal the complex processes that operate within natural ecosystems. Here, we review the design of existing, large-scale forest fragmentation experiments. Based on this review, we develop a design for the Stability of Altered Forest Ecosystems (SAFE) Project, a new forest fragmentation experimen...

2004
G Rogers

Relict forests within tussock grassland and abundant subsoil charcoal indicate that prior to Polynesian conflagrations, conifer forests dominated by kaikawaka covered the upper montane plateaux in Moawhango Ecological Region. Much forest remains in peripheral districts where the plateaux border the encircling Kaimanawa, Kaweka and Ruahine greywacke uplands; in these districts, beech forest of t...

Trees are the most important biological elements of forest ecosystems. The variability of the tree species composition inhabiting in the Oriental beech forest, not only forms different forest types but also has a remarkable impact on the species diversity of forest floor plants, due to the existence of trees in the overstory layer. In this research, forest types of an an Oriental beech were ide...

2016
Chaofan Wu Huanhuan Shen Ke Wang Aihua Shen Jinsong Deng Muye Gan

Forest biomass is a significant indicator for substance accumulation and forest succession, and a spatiotemporal biomass map would provide valuable information for forest management and scientific planning. In this study, Landsat imagery and field data cooperated with a random forest regression approach were used to estimate spatiotemporal Above Ground Biomass (AGB) in Fuyang County, Zhejiang P...

2012
Karel Tajovský Jan Hošek Jeňýk Hofmeister Jolanta Wytwer

Terrestrial isopods were collected in 13 forest fragments differing in area (within the range of 0.1 and 254.5 ha), shape and composition of forest vegetation (thermophilous oak, mesophilous oak-hornbeam, thermophilous oak-hornbeam, acidophilous oak, basiphilous oak, beech oak-hornbeam, moist mixed deciduous forest, plantations of deciduous and coniferous trees), all situated in the Český kras ...

2002
David Brown

Why community forestry? Forest management by rural communities is as old as history, but community forestry as a sponsored process is recent. While definitions abound, in this paper we use community forestry to mean a process whereby specific community forest users protect and manage state forests in some form of partnership with the government (Hobley 1996). The need to increase community part...

2012
Dilip C. Nath Dimacha Dwibrang Mwchahary

A favorable climatic condition for transmission of malaria prevails in Kokrajhar district throughout the year. A sizeable part of the district is covered by forest due to which dissimilar dynamics of malaria transmission emerge in forest and non-forest areas. Observed malaria incidence rates of forest area, non-forest area and the whole district over the period 2001-2010 were considered for ana...

1999
Victor A Rudis

We dcvelopt~l a spatially explicit modeling approaclr, using a county-scaled rem01 e forest (i.e., forested area reserved frown or having no direct human interference) assessment derived from l! 184-90 forest resonrce inventory data arid a 1984 trlack bear (Urszrs americancts) range map for 12 states in the southern United States. We defined minirtiinn suitable and optimal black bear habitat cr...

Journal: :Journal of environmental management 2013
Rasoul Yousefpour Christian Temperli Harald Bugmann Che Elkin Marc Hanewinkel Henrik Meilby Jette Bredahl Jacobsen Bo Jellesmark Thorsen

We study climate uncertainty and how managers' beliefs about climate change develop and influence their decisions. We develop an approach for updating knowledge and beliefs based on the observation of forest and climate variables and illustrate its application for the adaptive management of an even-aged Norway spruce (Picea abies L. Karst) forest in the Black Forest, Germany. We simulated fores...

2015
Hiroko Ochiai Harumi Ikei Chorong Song Maiko Kobayashi Ako Takamatsu Takashi Miura Takahide Kagawa Qing Li Shigeyoshi Kumeda Michiko Imai Yoshifumi Miyazaki

Time spent walking and relaxing in a forest environment ("forest bathing" or "forest therapy") has well demonstrated anti-stress effects in healthy adults, but benefits for ill or at-risk populations have not been reported. The present study assessed the physiological and psychological effects of forest therapy (relaxation and stress management activity in the forest) on middle-aged males with ...

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