the objective of this research was to identify and describe the different ecological species groups (vegetation types) present in the rural heritage museum of guilan. the study area was approximately 260 ha, which is located in the saravan forest park in guilan province, north of iran. sampling procedure was performed with a systematic random technique. a total of 89 plots were sampled. classif...

this study investigates the application of landscape ecology in planning and design of urban ecological systems. the ecological approach to landscape planning and the concepts of designing and implementing ecological systems have gained increasing attention in the last two decades. however, the ecological systems of urban environment need more research to consider built and natural patches and ...

http://bmj.com/cgi/content/full/329/7480/1421 Updated information and services can be found at: These include: Data supplement http://bmj.com/cgi/content/full/329/7480/1421/DC1 "Table" References http://bmj.com/cgi/content/full/329/7480/1421#otherarticles 3 online articles that cite this article can be accessed at: http://bmj.com/cgi/content/full/329/7480/1421#BIBL This article cites 11 article...

Four heavy metals were measured in forty-nine topsoil samples collected fromagricultural areas in Siakh-Darengoun, Iran. The goals were to investigate soil spatialdistribution patterns of metals; their potential ecological risk; and sources. The Hakansonpotential ecological risk index and index of geo-accumulation (Igeo) were used forevaluating t...

conclusions it can be concluded that residential-road land uses show the considerable pollution index and ecological risk. materials and methods soil samples were collected from a depth of 0-20 cm at 16 stations with different users. the samples were passed through a 2-mm sieve after air drying. to determine the concentration of heavy metals, the samples were extracted by acid chloride and nitr...

Nostalgia has recently grown as a popular subject of study. Much of the research on it, however, has not been conducted in a naturalistic way. The current experiments use a diary study to analyze aspects of nostalgia in a natural setting, including its emotional timeline and selfrelevance. Results found that nostalgia can behave like an involuntary memory and indeed has an emotional curve. Resu...