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| 1 | Regeneration ecology and population status of a critically endangered and endemic tree species (Ilex khasiana Purk.) in north-eastern India显示文摘人口结构和冬青属植物 khasiana 的新生生态学上的详细研究在五张代表性的自然人口被执行即 Mylliem (人口-我),上面的 Shillong (人口- II ), Shillong 山峰(人口- III ), Laitkor (人口- IV )并且 Nongpiyur (人口- V )在这些人口为它的人口结构和新生能力探查进负责的影响因素。在三个控制轻条件(完整的日光(100%) ,中间的日光(50%) 和低日光(30%)) 下面的试验性的观察证明在中间、低的光下面的幼苗的生长地位和幸存率比在高轻的条件下面的那些好。在成年的树(≥5cm dbh ) 的人口的密度直径分发展出了一张再生人口的一个典型人物。在自然人口的更高的幼苗死亡率我。khasiana 最可能由于轻紧张追随者植被破坏和引起的另外的人为的骚乱的增加森林华盖开。现在的学习的调查结果将具有在为种类提出适当保存措施的巨大的价值。 | Upadhaya Krishna Barik Saroj Kanta Adhikari Dibyendu Baishya Ratul Lakadong Nigyal John | 2009 | Journal of Forestry Research2009，20，3： | 2 |
| 2 | Moisture regime influence on soil carbon stock and carbon sequestration rates in semi-arid forests of the National Capital Region, India显示文摘Understanding the dynamics of soil carbon is crucial for assessing the soil carbon storage and predicting the potential of mitigating carbon dioxide from the atmosphere to the biomass and soil.The present study evaluated variations of soil carbon stock in semi-arid forests in India under diff erent moisture regimes.Soil organic carbon(SOC)and soil inorganic carbon(SIC)stocks were determined in diff erent moisture regimes i.e.monsoon,post-monsoon,winter and pre-monsoon seasons at 0–10 and>10–20 cm depths.SOC stock showed signifi cant variations under different moisture regimes.The highest SOC stock was during winter(22.81 Mg C ha−1)and lowest during the monsoon season(2.34 Mg C ha−1)among all the ridge forests under study.SOC and SIC stock under diff erent moisture regimes showed signifi cant negative correlation with soil moisture(p<0.05),as a sudden increase in soil moisture after rainfall results in an increase in carbon loss due to microbial decomposition of accumulated carbon during the dry period.There was an increase in annual SOC stock and a decrease(or no change in some cases),in SIC stock at both the depths during the study period.The SOC and SIC sequestration rates were estimated as any increase/decrease in the respective stock during each successive year.SOC sequestered ranged between 0.046 and 0.741 Mg C ha−1 y−1.Similarly,SIC sequestration ranged between 0.013 and 0.023 Mg C ha−1 y−1 over all ridge forests up to 20 cm depth.The Delhi ridge forests,which accounts to 0.007%of the semi-arid regions of India,contribute 0.25–0.32%of the national potential(semi-arid region)for SOC sequestration up to 20 cm depth.The estimates of the rate of C sequestration in this study provide a realistic image of carbon dynamics under present climatic conditions of semi-arid forests,and could be used in developing a database and formulating new strategies for carbon dioxide mitigation by enhancing soil C sequestration rates. | Urvashi Tomar Ratul Baishya | 2020 | Journal of Forestry Research2020，31，6： | 2 |
| 3 | Hydrophobicity and surface electrostatic charge of conidia of the mycoparasitic Trichoderma species显示文摘 | Tanuja Singh Ratul Saikia Tarakanta Jana | 2004 | Mycological Progress2004，3，3： | 1 |
| 4 | lntracranial cavernous angioma: a practical review of clinical and biological显示文摘 | Ratul R Huntington B Lssam AA | 2005 | Aspect Surgical Neurology2005，63，4： | 1 |
| 5 | TiO2-SiO2 mixed oxides prepared by a combined sol-gel and polymer inclusion method 显示文摘 | Elizabeth P Jamime R Ratul | 2004 | Microporous and Mesoporous Materials2004，67，： | 1 |
| 6 | Achieving high utilization with software-driven WAN显示文摘 | Chi-Yao Hong Srikanth Kandula Ratul Mahajan Ming Zhang Vijay Gill Mohan Nanduri Roger Wattenhofer | 2013 | ACM SIGCOMM Computer Communication Review2013，，： | 1 |
| 7 | Optimal Communication in Bluetooth Piconets 显示文摘 | Saswati Sarkar Farooq Anjum Ratul Guha | 2005 | IEEE Transaction on Vehicular Technology (S0018-9545)2005，54，2： | 1 |
| 8 | A case for adapting channel width in wireless networks显示文摘 | Ranveer Chandra Ratul Mahajan Thomas Moscibroda Ramya Raghavendra Paramvir Bahl | 2008 | ACM SIGCOMM Computer Communication Review2008，，4： | 1 |
| 9 | Controlling high bandwidth aggregates in the network显示文摘 | Ratul Mahajan Bellovin S M Sally Floyd | 2002 | Computer Communications Review2002，32，3： | 1 |
| 10 | Encapsulation of curcumin in alginate-chitosan-pluronic composite nanoparticles for delivery to cancer cells显示文摘 | Ratul Kumar Das Naresh Kasoju Utpal Bora | 2010 | Nanomedicine: Nanotechnology Biology and Medicine2010，，1： | 1 |
| 11 | Optimal Communication in Bluetooth Piconets显示文摘 | Sarkar Saswati Anjum Farooq Guha Ratul | 2005 | IEEE Transaction of Vehicular Technology2005，54，2： | 1 |
| 12 | Synthesis of silver nanoparticles in an aqueous suspension of graphene oxide sheets and its antimicrobial activity显示文摘 | Manash R. Das Rupak K. Sarma Ratul Saikia Vinayak S. Kale Manjusha V. Shelke Pinaki Sengupta | 2010 | Colloids and Surfaces B: Biointerfaces2010，，1： | 1 |
| 13 | Stand structure and species diversity regulate biomass carbon stock under major Central Himalayan forest types of India显示文摘Background:Data on the impact of species diversity on biomass in the Central Himalayas,along with stand structural attributes is sparse and inconsistent.Moreover,few studies in the region have related population structure and the influence of large trees on biomass.Such data is crucial for maintaining Himalayan biodiversity and carbon stock.Therefore,we investigated these relationships in major Central Himalayan forest types using nondestructive methodologies to determine key factors and underlying mechanisms.Results:Tropical Shorea robusta dominant forest has the highest total biomass density(1280.79 Mg ha^(−1))and total carbon density(577.77 Mg C ha^(−1))along with the highest total species richness(21 species).The stem density ranged between 153 and 457 trees ha^(−1) with large trees(>70 cm diameter)contributing 0–22%.Conifer dominant forest types had higher median diameter and Cedrus deodara forest had the highest growing stock(718.87 m^(3) ha^(−1));furthermore,C.deodara contributed maximally toward total carbon density(14.6%)among all the 53 species combined.Quercus semecarpifolia–Rhododendron arboreum association forest had the highest total basal area(94.75 m^(2) ha^(−1)).We found large trees to contribute up to 65%of the growing stock.Nine percent of the species contributed more than 50%of the carbon stock.Species dominance regulated the growing stock significantly(R^(2)=0.707,p<0.001).Temperate forest types had heterogeneous biomass distribution within the forest stands.We found total basal area,large tree density,maximum diameter,species richness,and species diversity as the predominant variables with a significant positive influence on biomass carbon stock.Both structural attributes and diversity influenced the ordination of study sites under PCA analysis.Elevation showed no significant correlation with either biomass or species diversity components.Conclusions:The results suggest biomass hyperdominance with both selection effects and niche complementarity to play a complex mechanism in enhancing Central Himalayan biomass carbon stock.Major climax forests are in an alarming state regarding future carbon security.Large trees and selective species act as key regulators of biomass stocks;however,species diversity also has a positive influence and should also reflect under management implications. | Siddhartha Kaushal Ratul Baishya | 2021 | Ecological Processes2021，10，1： | 1 |
| 14 | The antimicrobial effect of silicon nanowires decorated with silver and copper nanoparticles显示文摘 | Ouarda Fellahi Rupak K Sarma Manash R Das Ratul Saikia Lionel Marcon Yannick Coffinier Toufik Hadjersi Mustapha Maamache Rabah Boukherroub | 2013 | Nanotechnology2013，，49： | 1 |
| 15 | Synthesis of gold nanoparticles using aqueous extract of Calotropis procera latex显示文摘 | Ratul Kumar Das Pragya Sharma Pradip Nahar Utpal Bora | 2010 | Materials Letters2010，，4： | 1 |
| 16 | Computer and M&S -Modeling and simulation显示文摘 | RATUL M SALLY F | 2001 | Controlling High Bandwidth Flows at the Congested Router Tech Report TR- 01 -0012001，7，11： | 1 |
| 17 | Understanding BGP misconfiguration 显示文摘 | Ratul Mahajan David Wetherall Tom Anderson | 2002 | Computer Communication Review2002，32，4： | 1 |
| 18 | Synthesis of silver nanoparticles in an aqueous suspension of graphene oxide sheets and its antimicrobial activity 显示文摘 | Manash R D Rupak K S Ratul S | 2011 | Colloids and Surfaces B : Biointerfaces2011，83，： | 1 |
| 19 | Controlling high bandwidth aggregates in the network显示文摘 | Ratul Mahajan Steven M Bellovin Sally Floyd John Ioannidis Vern Paxson Scott Shenker | 2002 | ACM SIGCOMM Computer Communication Review July2002，32，3： | 1 |
| 20 | Seasonality and moisture regime control soil respiration, enzyme activities, and soil microbial biomass carbon in a semi-arid forest of Delhi, India显示文摘Soil respiration,soil enzymes,and microbial biomass are important in carbon cycling in the terrestrial ecosystem which is generally limited by environmental factors and soil carbon availability.Hence,we tried to assess the factors affecting the functional aspects of these processes in a semi-arid climate.We monitored soil respiration(surface)using a portable infrared gas analyzer(Q-Box SR1LP Soil Respiration Package,Qubit Systems,Canada)equipped with a soil respiration chamber(Model:G 180).Soil respiration was measured at midday during each season throughout the study period.Soil enzymatic activities and microbial biomass carbon(MBC)were analyzed following the standard protocol for a year during peak time in four seasons at 0-10 cm and 10-20 cm depth.Soil respiration shows significant variation with highest in monsoon(3.31μmol CO2 m−2 s^(−1))and lowest in winter(0.57μmol CO2 m^(−2) s^(−1)).Similarly,β-glucosidase,dehydrogenase,and phenol oxidase activity ranged from 11.15 to 212.59μg PNP g^(−1) DW h^(−1),0.11 to 16.47μg TPF g^(−1) DW h^(−1),and 4102.95 to 10187.55μmol ABTS+g^(−1) DW min^(−1),respectively.MBC ranged from 17.08 to 484.5μgCg^(−1).Besides,soil respiration,soil enzymes(exceptβ-glucosidase),and MBC were significantly correlated with soil moisture.Seasonality,optimum moisture and temperature played a significant role in determining variations in soil microbiological processes(exceptβ-glucosidase activity);the carbon cycling in the study area is assisted by enzyme activity;dehydrogenase and phenol oxidase played a significant role in soil respiration;hence,this landscape is sensitive to environmental changes. | Urvashi Tomar Ratul Baishya | 2020 | Ecological Processes2020，9，1： | 1 |
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