فصلنامه تحقیقات کاربردی علوم جغرافیایی
پیاپی 2 (زمستان 1382)

This study is on calculating the D.A.D curves of Haraz River basin after the primary stages of the study for calculating the curves of D.A.D, the precipitation of Haraz River basin in a period of years was analyzed (–). Examining the relationship between the mentioned precipitation and storms, great stroms, according their greatness were selected. For determining the average precipitation in various continuation and its distribution on basin area the tables of area–depth precipitation and primary curves of D.A.D was drawn. According to the basin final curve of one day curve interval from y axis was very good. Curve of two day intervals compared to one day curve interval was medium, and day curve interval were near to each other, which the data and the obtained curve interval will be very useful in different cases of hydro climatic.

Spring frosts are considerd as applied Climatology. Various methods such as synoptic, statistical and provision approaches of frost research are applied. The Function of low and thermal high pressures in creation of frost is essential. Totally, radiation, advection, evaporation frosts and finally thermal inversion are observed as microclimatic aspects of frost in our study.The horticultural potential of Marand Area in apple production is important. Apricot and almond are vulnerable against frost.Active and inactive methods are advised to product fruits outputs against frost affection.

Classification of pattern and geometrical characteristics of the river pattern is considerd as an important issue relevant to fluvial geomorphology. Therefore various researches have been made by Babol river in coastal plain was examined with the emphasis on meanderic pattern. First, geometerical characteristics were obtained with the use of curve fitting, also by using coefficient of Leopold & wolman and table of kornise the pattern of the river was separated considering braided, meander and straight. The result of this examination indicated that Babol river from the rivers pattern of view, in the up stream have middle pattern between meandering and braided and in the down stream have meandering pattern.

Remote sensing and GPS technologies have shown their abilities to map our environment. In this research an attempt has been made to study the usefulness of remote sensing data to produce maps of coastal marsh of Shadegan area Southern part of Iran in the scale of. This marsh had already a general land cover of types Phragmites sp and Typha sp. As a result of drought since late in this area, these species have been replaced with other plant communities. In the managerial point of view, the recognition of the replaced new plant communities is very important for further marsh management. In this regard, Landsat ETM + geocoded data pertaining to the study area used to first generate an enhanced image data through fusion algorithm of GEOMATICA image processing software from ETM + bands, , and. Using this enhanced image data set and based on MLC algorithm a map showing land cover plant categories was generated. It is resulted that the trend of plant species from center part of marsh to outer part observed to be from marsh species to non-marsh species. The overall classification accurancy was percent in comparison with a sampling ground truth map (about percent of total area).

Rural development planning process in the framework of midterm development plans of Iran has always been influenced from two view points of "improvement correction” and "diversification", the applied strategies and paradigms have been adopted thanks to these. Two outlooks. During the years of midterm plans formulated for Iran’s development, ecologic approach toward development of rural areas has been gradually shifting toward the approach of diversification of the existing structures, improvement of spatial–physical system, quitable distribution of services, and eventually socio economic approaches, and sustainable and multilateral development. At each stand of time particular strategies, plans and actions under focus have been appropriate to the outlook dominating the rural development process.