نتایج جستجو برای: range plant

تعداد نتایج: 1036523  

Journal: :محیط شناسی 0
دکترمحمد جعفری مهندس سید ابوالفضل نصراللهی دکتر فریدون سرمدیان دکتر حسین آذرنیوند

relationship between plant and sial has special importance, because it is judged about one by considering the another one. soil-plant relationship is used for range trend, range emdttton, range suitability in range species. this research, includes: the analysis of plant different types and dominant species in each type with soil factors such as percentage of lime clay depth, stone and gravel (s...

Traditionally, Electrical power plant capacities are determined after specific plant locations have been selected. In this paper an expansion policy of power plant centers involving the choice of regions that must be allocated to power plant centers and power plant centers capacities over a specified planning horizon (years) is tackled. The problem is performed as a mixed integerprogramming mod...

Fire is one of the incorporate vegetation management practices for grasslands and semi-arid rangelands. It may affect symbiotic relationship between range plants and mycorrhiza. Accordingly, this research was aimed to investigate the effects of a spring prescribed fire on the symbiotic relationships between mycorrhiza and 6 plant species. The study was conducted in a semi-arid steppe rangeland ...

2011

We have seen the use of partition trees for range searching earlier. In this lecture an efficient partition scheme which achieves the optimal query time within polylog factors is described. See [4] and [5] for more details. There are several new ideas on which this scheme relies. The existence of “good” cuttings are central to the algorithm. In the next section some of the definitions and resul...

Asghar Farajollahi Bahram Gholinejad Eiraj Parvane Hassan PourBabaei

Today, in the rangeland management science and determination of rangecapacity, accurate and true information about range production is crucial. In fact, rangeproduction is considered as a basis for range management. The aim of this study was tocompare different methods for the estimation of forage production with four samplingmethods in the rangelands of Kurdistan province, Iran. The sampling m...

This study aimed to identify the most important physical variables affecting the distribution of four range plants species (Tamarix aphylla, Calligonum comosum, Prosopis spicigera and Salsola rigida) habitats and to prepare potential habitat map of the species using Maximum Entropy (MaxEnt) method in rangelands of Jiroft city, Kerman province, located in SE Iran. To this end, sampling of vegeta...

Journal: :journal of rangeland science 0
jalil ahmadi ferdowsi university of iran mohammad farzam ferdowsi university of mashhad amir lagzian ferdowsi university of mashhad

fire is one of the incorporate vegetation management practices for grasslands and semi-arid rangelands. it may affect symbiotic relationship between range plants and mycorrhiza. accordingly, this research was aimed to investigate the effects of a spring prescribed fire on the symbiotic relationships between mycorrhiza and 6 plant species. the study was conducted in a semi-arid steppe rangeland ...

Journal: :Journal of Ecology 2021

Brian Silliman and Christine Angelini are Associate Editors of Journal Ecology, but took no part in the peer review decision-making processes for this paper. All other authors declare conflict interest. The history article is available at https://publons.com/publon/10.1111/1365-2745.13735. data used presented results provided as CSV files can be downloaded from Dryad Digital Repository https://...

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