En
  • دکتری (1391)

    جنگلداری

    دانشگاه تربیت مدرس،

  • کارشناسی‌ارشد (1386)

    مهندسی منابع طبیعی - جنگلداری

    دانشگاه مازندران - بابلسر،

  • کارشناسی (1383)

    مهندسی منابع طبیعی - جنگلداری

    دانشگاه علوم کشاورزی و منابع طبیعی گرگان،

  • اکولوژی خاک
  • بیولوژی و بیوتکنولوژی خاک
  • بیولوژی خاک

    زمینه های پژوهشی: بیولوژی خاک

    کارشناس مسئول: منوچهر نائیجی

    هیات علمی همکار: یحیی کوچ

    تلفن: 9092

    مکان: دانشکده منابع طبیعی - پردیس نور

  • آزمایشگاه بیولوژی خاک

    زمینه های پژوهشی:

    کارشناس مسئول: منوچهر نائیجی

    تلفن:

    مکان: آزمایشگاه مرکزی

محل تولد: نوشهر تاریخ تولد: 30061361 مذهب: شیعه رشته تحصیلی: مهندسی منابع طبیعی- جنگلداری گرایش تخصصی: اکولوژی خاک تلفن همراه: 09112932313 پست الکترونیکی: yahya.kooch@yahoo.com yahya.kooch@modares.ac.ir

ارتباط

رزومه

Tree cover mediate indices related to the content of organic matter and the size of microbial population in semi-arid ecosystems

Yahya Kooch, Atefeh Shah Piri, Ghasem Ali Dianati Tilaki
Journal PapersJournal of Environmental Management , Volume 285 , 2021 May 1, {Pages 112144 }

Abstract

The type of vegetation cover affects the contents of organic matter and other soil features that can lead to variability of soil microbial processes, which play a key role in the nutrient cycle. This issue is especially important in mountainous semi-arid ecosystems, which have been introduced as fragile and vulnerable habitats. In the present study, labile contents of soil organic matter (SOM), microbial and enzymatic indices under the influence of forest and rangeland cover [i.e. natural forest with dominant species of Zelkova carpinifolia (Pall.) K. Koch. And three rangeland covers, converted form forest site almost 30 years ago, with dominant species of Festuca ovina L. Dactylis glomerata L. and Stachys byzantina K. Koch.] in Northern Ir

Evaluation of soil quality indicators due to degradation and conversion of forest habitats to rangeland in western Mazandaran

Atefeh Shah Piri, Yahya Kooch, Ghasem Ali Dianati Tilaki
Journal PapersIranian Journal of Soil and Water Research , 2021 January 27, {Pages }

Abstract

Degradation of forest habitats and change of land cover can have significant effects on the variability of soil quality indicators. In the present study, different soil characteristics in forest habitat (almost intact) dominated by Zelkova carpinifolia, rangeland cover dominated by Festuca ovina and single trees of Zelkova carpinifolia and Ulmus minor, rangeland cover dominated by Dactylis glomerata and Thymus transcaspicus and rangeland cover dominated by Stachys byzantina in Zanus region of Kojoor district of Mazandaran province was examined. For this purpose, 36 soil samples (including 12 samples from spring, summer and autumn) were taken from each land cover from a depth of 0-10 cm and transferred to the laboratory. The results indicati

Analysis of composition and biodiversity of understory plants in natural and reforestation stands of western hyrcanian (case study: Ramsar Sang Poshteh).

M Bazyari, V Etemad, Y Kooch, A Shirvany
Journal PapersIranian Journal of Forest and Range Protection Research , Volume 18 , Issue 2, 2021 January , {Pages }

Abstract

The aim of this study was to evaluate the vegetation vegetation Subject Category: Miscellaneous

Soil biota and fertility along a gradient of forest degradation in a temperate ecosystem

Yahya Kooch, Milad Azizi Mehr, Seyed Mohsen Hosseini
Journal PapersCATENA , Volume 204 , 2021 September 1, {Pages 105428 }

Abstract

Soil biota populations are good indicators for the evaluation of soil quality, which is in line with the nutrient cycles in forest ecosystems. To the best of the authors’ knowledge, responses of belowground biota to forest removal intensity have received little attention. The present study aimed to study the effect of low, moderate and high intensities of forest degradation, based on the density of standing trees, in lands covered by Carpinus betulus and Parrotia persica tree species in northern Iran on forest floor, soil properties and fauna and flora activities. In the summer season, a total of 15 forest floor and soil samples (30?× 30?× 10?cm) from each site were transferred to the laboratory. To achieve the temporal pattern of soi

Soil functional indicators in a mountain forest-rangeland mosaic of northern Iran

Yahya Kooch, Neda Ghorbanzadeh, Stephan Wirth, Agata Novara, Atefeh Shah Piri
Journal PapersEcological Indicators , Volume 126 , 2021 July 1, {Pages 107672 }

Abstract

Soil plays an essential role in providing ecosystem services, especially in mountain ecosystems which are often considered as fragile and sensitive systems and commonly consist of a mosaic of forest and rangeland plant communities. The relationship between above-ground plant cover and the properties of soil organic and mineral layers in mountain areas are rarely studied. This research aimed to assess the effect of different land covers (i.e. forest, forest-rangeland ecotone, and rangeland) on soil functional indicators, i.e. fertility and biological activities, in the Hyrcanian region of northern Iran. We hypothesized that (i) the presence of tree cover enhances soil fertility and biological activities and creates hot spots (islands) of soi

Conversion of forest to rangelands suppress soil fauna and flora densities during long-term in mountain ecosystems

Yahya Kooch, Atefeh Shah Piri, Ghasem Ali Dianati Tilaki
Journal PapersEcological Engineering , Volume 165 , 2021 July 1, {Pages 106241 }

Abstract

The effect of vegetation types at mountainous sites on the relationships between soil biota and environmental variables applicable for the evaluation of soil quality and functions are barely studied and remain almost unknown. In the present study, the effect of forest degradation and vegetation types changes [i.e. natural forest with dominant species of Zelkova carpinifolia (Pall.) K. Koch. and three rangelands with dominant species of Festuca ovina L. Dactylis glomerata L. and Stachys byzantina K. Koch.] on the dynamics of soil properties and density of soil organisms in northern Iran has been considered. For each studied vegetation types, three different sites (at a distance of 4–6?km) with 1?ha area were selected. In summer (August), l

Impact of forest degradation and reforestation with Alnus and Quercus species on soil quality and function in northern Iran

Razie Sanji, Yahya Kooch, Ana Rey
Journal PapersEcological Indicators , Volume 112 , 2020 May 1, {Pages 106132 }

Abstract

Forest degradation causes soil carbon losses and affects soil C and N cycling. However, it is not clear how reforestation of degraded areas with different species affects soil and ecosystem restoration, particularly in northern Iran. The aim of this study was to evaluate the effect of forest degradation and reforestation with two contrasting species: Alnus and Quercus as N2-fixing and non N2-fixing tree species, respectively, on soil quality and function after 30?years in the northern Iran region. We selected four forest stands: Carpinus betulus-Parrotia persica natural forest (NF), Alnus subcordata (AP) and Quercus castaneifolia (QP) plantations as rehabilitated areas, and a degraded natural forest (DNF). We examined the main litter and so

C and N cycle under beech and hornbeam tree species in the Iranian old-growth forests

Yahya Kooch, Negar Moghimian, Giorgio Alberti
Journal PapersCATENA , Volume 187 , 2020 April 1, {Pages 104406 }

Abstract

Beech and hornbeam are two of the most common species in old-growth temperate forests. However, how these two species affect soil carbon (C), soil nitrogen (N) and soil microbial and enzymatic activities is still not well understood. Thus, the aim of the present study was to quantify the effects of beech and hornbeam on soil chemical, biochemical and biological features at Makarod forest, Northern Iran, by sampling either forest floor or mineral soil (30?× 30?× 15?cm) under individual trees of both species. Based on our data, hornbeam showed higher concentrations of N, phosphorous (P), potassium (K), calcium (Ca) and magnesium (Mg), but lower total thickness, C and C: N ratio in the forest floor. Top mineral soil under hornbeam had alka

Effects of grazing management on leaf litter decomposition and soil microbial activities in northern Iranian rangeland

Yahya Kooch, Negar Moghimian, Stephan Wirth, Niloufar Noghre
Journal PapersGeoderma , Volume 361 , 2020 March 1, {Pages 114100 }

Abstract

The effects of rangeland management on biogeochemical processes that control the exchange of C and nutrients between the soil and plant are not well understood. For this purpose, aboveground litter properties and decomposition of three dominant species (Artemisia aucheri, Astragalus podolobus, and Eurotia lanata) were studied in four rangeland management systems of northern Iran including continuous grazing, intermittent grazing, and two non-grazing sites (i.e. woody and non-woody rangelands). We tested the following hypotheses: (i) woody rangeland improves litter quality, with a higher rate of decomposition, soil fertility and biochemical functions compared to non-woody rangeland and grazed sites, and (ii) continuous grazing reduces microb

The effect of shrubland and grassland vegetation types on soil fauna and flora activities in a mountainous semi-arid landscape of Iran

Yahya Kooch, Niloufar Noghre
Journal PapersScience of The Total Environment , Volume 703 , 2020 February 10, {Pages 135497 }

Abstract

The effect of vegetation types at mountainous sites on the relationships between soil biota and environmental variables applicable for the evaluation of soil quality and functions are barely studied and remain almost unknown. With the aim of studying the effect of shrubland and grassland plant coverings on soil fauna and flora activities, a mountainous semi-arid site in northern Iran (Diakooh) was selected for this research. Six vegetation types were selected with dominance in shrub and grassland coverage, i.e., (1) Crataegus microphylla CK. Koch., (2) Berberis integerrima Bunge, (3) Ribes uva–crispa L., (4) Prunus spinosa L., and with dominance in rangeland cover, i.e., (5) dominant Lecokia cretica (Lam.) DC., Orchis mascula L., Cardamin

Long-term afforestation effect and help to optimize degraded forest lands and reducing climate changes

Katayoun Haghverdi, Yahya Kooch
Journal PapersEcological Engineering , Volume 142 , 2020 January 1, {Pages 105656 }

Abstract

The present study examined the forest floor, soil properties, and dynamics of greenhouse gas fluxes in 23-years old stands of alder (Alnus subcordata C. A. M.), maple (Acer velutinum Bioss.), cypress (Cupressus sempervirens L. var. horizontalis), and pine (Pinus nigra) sites in northern Iran. A degraded natural forest (DNF) with sparse trees including Parrotia persica C. A. M., Carpinus betulus L., and Diospyros lotus L. located near the afforested stands was selected as the control region. Fifteen forest floor and topsoil (0–15 cm) samples per site were taken and analyzed in the laboratory. In addition, the seasonal changes in the fluxes of CO2, CH4, and N2O were studied over a year. The quality of the forest floor differed among the s

The effect of forest degradation intensity on soil function indicators in northern Iran

Yahya Kooch, Milad Azizi Mehr, Seyed Mohsen Hosseini
Journal PapersEcological Indicators , Volume 114 , 2020 July 1, {Pages 106324 }

Abstract

The degradation of forest ecosystems has an important role in global warming through the carbon (C) and nitrogen (N) cycles. The response of soil organic matter fractions and microbial activities to forest degradation has been poorly studied. The purpose of the current research was to evaluate the effect of different intensities (i.e. low, moderate, and high) of forest degradation in northern Iran on the fractions of particulate and dissolved organic matter, microbial and enzyme activities as indicators of soil function. In this research, a total of 15 soil samples (30?× 30?× 10?cm) from each studied forest sites were transferred to the laboratory. Fifty-two soil characteristics of those forest ecosystems were studied by principal compo

Nutrient cycling and soil-related processes under different land covers of semi-arid rangeland ecosystems in northern Iran

Yahya Kooch, Niloufar Noghre
Journal PapersCATENA , Volume 193 , 2020 October 1, {Pages 104621 }

Abstract

There are contrasting reports about whether and how land covers influence soil organic matter fractions and microbial activities. To the best of the authors’ knowledge, the relationship between above-ground plant cover and the nutrient cycling in semi-arid areas, which are often considered as especially fragile and sensitive ecosystems, are almost unknown. The purpose of this research was to evaluate the influence of different shrub and grasslands located in northern Iran on the fractions of soil particulate and dissolved organic matter, microbial/enzyme activities. In this study, a total of 15 soil samples (30?× 30?× 10?cm) from each vegetation type [i.e. (1) Crataegus microphylla C. Koch., (2) Berberis integerrima Bunge., (3) Ribes

Stratification of soil organic matter and biota dynamics in natural and anthropogenic ecosystems

Yahya Kooch, Somayyeh Ehsani, Moslem Akbarinia
Journal PapersSoil and Tillage Research , Volume 200 , 2020 June 1, {Pages 104621 }

Abstract

Soil organic matter (OM) stratification and macro and micro fauna are both good indicators for the evaluation of soil ecological functioning, which is interrelated with nutrient cycles. To the best of the authors’ knowledge, responses of the degree of OM stratification with soil depth expressed as a ratio, and belowground biota to forest degradation and land cover changes have received little attention, particularly in northern Iran. In this study, five land covers were selected: virgin natural forest dominated by Carpinus betulus and Parrotia persica (natural forest), mono-species oak stand (plantation), land including Citrus sinensis and Citrus tangerina trees (garden), land dominated by Brachypodium pinnatum and Carex sylvatica (rangel

Effect of broadleaved tree species on chemical and microbial soil properties in plain forest of Noor.

MB Mahmoodi, Y Kooch, A Kianmehr
Journal PapersIranian Journal of Forest and Poplar Research , Volume 28 , Issue 1, 2020 January , {Pages }

Abstract

Forest soil characteristics can be strongly influenced by tree species and seasons. A few studies have been carried on the effect of single trees trees Subject Category: Organism Groups

Effects of shelterwood and single-tree cutting systems on topsoil quality and functions in northern Iranian forests

Yahya Kooch, Negar Moghimian, Stephan Wirth, Katayoun Haghverdi
Journal PapersForest Ecology and Management , Volume 468 , 2020 July 15, {Pages 118188 }

Abstract

Foresters always emphasize the understanding of soil properties in evaluating site capacity to support productive forests. In order to conserve and improve soil quality and functions, sophisticated forest management systems are of particular importance. Hyrcanian forests of Iran have been harvested under different silvicultural operations such as shelterwood and selective cutting systems. So far, no studies have been conducted to explore the effects of forest management systems on soil properties in this ecosystem. Consequently, the present study aimed to investigate the impact of shelterwood and single-tree cutting systems on soil quality and functions (i.e. organic matter fractions, biota and microbial/enzyme activities), 10 and 20?years

Do tree plantations or cultivated fields have the same ability to maintain soil quality as natural forests?

Mehrdad Zarafshar, St?phane Bazot, Mohammad Matinizadeh, Seyed Kazem Bordbar, Mohammad Javad Rousta, Yahya Kooch, Kokab Enayati, Alireza Abbasi, Mohammadreza Negahdarsaber
Journal PapersApplied Soil Ecology , Volume 151 , 2020 July 1, {Pages 103536 }

Abstract

Human activities, such as tree cutting and land-use change, have significantly altered the forests of Iran's Zagros Mountains. In plantation projects within these forests, maintaining soil structure and fertility is necessary for sustainable forest management. Ideally, the soil quality of tree plantations should be as good as that of natural forests. In this study, we investigated the long-term impact of land-use change, i.e. conversion of natural oak forest to tree plantations or cultivated fields, on soil quality (i.e., physicochemical, biological and biochemical soil properties) in the forests of the Zagros Mountains. We found that the conversion of natural oak forest to tree plantations (in this case Cupressus arizonica, Cedrus libani,

The effect of forest degradation and land use change on some soil biological indexes (case study: Persian oak (Quercus brantii Lindl) forests in Fars province)

Mehrdad Zarafshar, Mohammad Matinizadeh, Mohammad Javad Rousta, Seyed Kazem Bordbar, Yahya Kooch, Mohammadreza Negahdarsaber, Alireza Abbasi, Kokab Enayati
Journal PapersJournal of Plant Ecosystem Conservation , Volume 7 , Issue 15, 2020 February 10, {Pages 319-332 }

Abstract

To understand the effects of forest degradation and their conversion to farmlands, the current research was conducted with emphasis on some soil biological indexes. In this regard, two different land use including an oak natural stand and a farm next to the forest and under cultivation since 20 years ago were surveyed. Within the each land use, three sampling plots with 10? 10 meter dimension were randomly set and the soil was sampled form 0-10 cm depth and transformed to the laboratory. Afterwards, some biological variables such as soil basic microbial respiration, substrate induced respiration, microbial biomass carbon and microbial biomass nitrogen, metabolic quotient, carbon availability index, Cmic/Corg, urease, alkaline and acid phosp

The effect of canopy combination in over story on nutrient Contentand microbial indices of soil in Korkoroud forests of Noshahr

ABKENAR K TAHERI, Y KOOCH, A SALEHI
Journal Papers , Volume 11 , Issue 400822, 2020 January 1, {Pages 547-558 }

Abstract

The present study aimed to assess the effect of canopy combination of beech trees and mixed species (beech-hornbeam-maple, beech-hornbeam, beech-maple and pure beech) on microbial indices and soil nutrient stocks characteristics in Mazandaran Province, north of Iran. Leaf litter sampling was done by using litter traps and soil samples (30? 30? 30 cm) were taken in each of the stands with five replicaties under the canopy of beech trees. Characteristics of litter (organic carbon, total nitrogen, carbon to nitrogen ratio, phosphorus, potassium, calcium and magnesium) were measured. The physical, chemical, biochemical and microbial properties of soil (bulk density, Sand, silt, clay, pH, EC, organic carbon, total nitrogen, carbon to nitrogen ra

Global distribution of earthworm diversity (vol 366, pg 480, 2019)

HRP Phillips, CA Guerra, MLC Bartz, JI Briones, G Brown, TW Crowther, O Ferlian, KB Gongalsky, J van den Hoogen, J Krebs, A Orgiazzi, D Routh, B Schwarz, EM Bach, J Bennett, U Brose, T Decaens, B Konig-Ries, M Loreau, J Mathieu, C Mulder, WH van der Putte
Journal PapersScience , Volume 369 , Issue 6503, 2020 January , {Pages }

Abstract

화학공학소재연구정보센터 홈 로그인 로그아웃 연락처 사이트맵. 센터: 센터소개; 회원가입/정보수정. 뉴스: 공지사항; 연구동향; 우수연구자소개; 취업정보. 연구정보: 문헌DB; KDB; Compound Search; 전문연구정보; 동영상; 심포지움 자료; 연구성과보고서; 저널정보; 논문 작성법; 참고문헌DB; 분석기기DB; 화학공정DB; PSPDB; 연구자지식지도; 상태도정보. 교육정보: 사이버강의-학부; 사이버강의-대학원; 실무강좌; 강의자료 링크; 교육자료 링크; 사이버실험실; 물성측정실험 매뉴얼. 커뮤니티: 공학포럼; 카페; 신진연구자인터뷰. 리소스: 특허정보; 술어DB; 관련법령; 자격증?

دروس نیمسال جاری

  • دكتري
    رابطه پوشش و حفاظت خاك ( واحد)
    دانشکده منابع طبیعی و علوم دریایی، گروه مرتعداري
  • كارشناسي ارشد
    مبارزه بيولوژيك با فرسايش ( واحد)

دروس نیمسال قبل

  • كارشناسي ارشد
    حاصلخيزي خاك و تغذيه گياه ( واحد)
    دانشکده منابع طبیعی و علوم دریایی، گروه مرتعداري
  • دكتري
    مديريت پايدار خاك هاي مرتعي ( واحد)
  • 1398
    شه پيري, عاطفه
    تحليل تغييرپذيري جانداران خرده ريزخوار و تجزيه كننده در ارتباط با استوكيومتري مشخصه هاي كيفي گياه و خاك
  • 1398
    قادري, الهام
    داده ای یافت نشد
    داده ای یافت نشد

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