فصلنامه استراتژی راهبردی جنگل
پیاپی 3 (پاییز 1395)

Growth and sustainable development is the most important of economic object in any country. The Most important of criteria for its measurement is Share of investment. Agriculture is one of the biggest sectors of economic in country that important role has played in providing food security¡ economic growth¡ create of job and Eventually Gross National Product. low investment in its sector is originated of varied factors as like weak policy and economic power of its supplier¡ take of efficiency in long term in natural resource and agriculture plan¡ high risk of investment in private sector and about oriented subside policy inside of aid to urban consumers. Achieving the aim¡ this paper has studied the interest rate (increase or decrease) of investment in agricultural sector. Agriculture and natural resource sector was scared of lower investment in itself sector. Annual investment Average in agriculture and natural resource haven''t reached of up 5 percent in all development program of country involve three program before revolution¡ five program after revolution and effect of forced war.

Oak is the most important tree species in Zagros forests¡ that its natural regeneration have been impaired especially in recent years. The aim of this study was to investigate the relationship between establishment of Persian oak regeneration with environmental factors (physiographic and soil properties) on an area of 510 hectares in Renow mountains of Ilam province. Random sampling method was used for this purpose. That¡ after determine of regeneration location in relation of various factors of physiographic were implemented 80 plots of 10 × 10 square meters. Within each plot¡ the regeneration of oak in high and coppice forest and also physiographic and soil factors were taken. The results showed that there are significantly different between high forest and coppice regeneration with aspects and elevation. Oak high forest regeneration is more in north aspect and increased in high elevation. In addition¡ oak coppice regeneration has positive correlation with organic carbon¡ nitrogen¡ phosphorus and silt percent. Oak regeneration has more density in northwestern aspect and high elevation¡ but high forest regeneration has not significant correlation with any soil factors. Most regeneration was observed in the northwestern direction¡ moderate elevation and high slope (shoulder side of the road).

Spatial pattern appropriate means to recognition and solving ecological problems and offering solutions, forest management According to the methods of close to nature forestry. The final objective for evaluation of spatial pattern is formation and presentation of the relevant hypotheses regarding ecologic communities, which are crucially important in forest sustainable management. The present study is aimed to examine spatial distribution pattern, mixture status, and diversity of forest wooden species in forests of Mid Zagros Zone (Zarabin Ilam, Shoorab, and Ghalehgol in Lorestan province) by means of Nearest Neighborhood Index (Clark & Evans). The100%inventory of stand was employed to extract accurate land data. The results of Clark and Evans’ Index showed the Clumped Pattern for zones of Shoorab and Ghalehgol and the Uniform Pattern for Zarabin region. In order to examine way of arrangement of various species along each other, Mixture Index was applied. With respect to mixture and biological diversity indices, the uniform pattern may be produced due to modification in clumped pattern, which caused by increase in distance among basal sprout due to aging and further diversity of species. Spatial patterns of trees in a forest stand and tree growth has a direct impact on the balance hec, So how forest management is important.

Saffron is a one of member of Iridaceae family. Saffron is used for aims such as lenitive¡ anti-spasm¡ increase of appetite¡ enforcement of stomach. For identify of wild saffron genus in Ilam province¡ we have selected five country and thus in way of random inventory we assessment 3-7sample (Sum 22sample). We used of Mathew identify key. Achieving the aim¡ this paper has studied three species saffron identified involve Crocus haussknechtii Boiss¡ Crocus haussknechtii Boiss and Crocus biflorus M. Results indicate that the most and low frequency of saffron is respectively Crocus haussknechtii Bois and Crocus biflorus M. Also distribution pattern of Crocus haussknechtii Bois is spread in all its country.

Trees are the most significant things in the circle of biological life. These beautiful heavenly plants in Farsi poetry and literature help the beautification of environment pleasantly. Trees are the shelter of various birds and the nest of tranquility and songs. Abul hasan Ali ibn Julugh known as Farrukhi Sisitani is the 4th and 5th century Persian poet and one the most prominent poet of all time. He has an innate tendency toward the nature of trees and from this point of view he utilizes trees for his own emotional and simple meanings. Farrukhi was a man of enjoyment¡ pleasure and vinosity. He was a poem who reached to honor and fame from poverty and anonymity to the way that he was a member of royal system. Difficulty and toil of earning livelihood didn’t bother him. He comprehended the role of trees during happiness in the magnificent banquet of Ghaznavi government and he was a great companion of trees. The most important poetic imagery in the function of trees was similies for Farrukhi. The article has surveyed Farrukhi poetry and found 40 different kinds of trees which made the atmosphere of his poems. Here¡ we wrote about only 15 trees in the context of his poetry. The advantages of the research are illustration of life style and sitting on the tablecloth of nature. On the other hand¡ its consequence is record of different kind of trees (organic forest) in the poetry of 4th and 5th century.