Journal of natural history museum最新文献_第5页

Analysis of carbon stock and radial growth of trees through tree ring analysis in pine forest of linga guthi in Bhaktapur, Nepal 尼泊尔巴克塔普尔林加古提松林碳储量和树木径向生长的树木年轮分析

Journal of natural history museum Pub Date : 2018-12-01 DOI: 10.3126/jnhm.v30i0.27574

Saphalta Chhukan, S. B. Karmacharya, S. R. Maharjan

{"title":"Analysis of carbon stock and radial growth of trees through tree ring analysis in pine forest of linga guthi in Bhaktapur, Nepal","authors":"Saphalta Chhukan, S. B. Karmacharya, S. R. Maharjan","doi":"10.3126/jnhm.v30i0.27574","DOIUrl":"https://doi.org/10.3126/jnhm.v30i0.27574","url":null,"abstract":"Forests are the integral to the global carbon cycle. These ecosystems sequester carbon in the plant biomass and in the soil. The study was carried out in Linga Guthi Community Forest of Bhaktapur to estimate carbon Stock and radial growth of Pinus roxburghii through tree ring analysis. A total of 32 circular plots of 250 m2 area were laid down randomly. Subplots were made for study of saplings, Litter, herbs and soil. For tree ring analysis, tree core samples were collected from different blocks of forest. Ring widths were measured using TSAP-Win Software attached to a LINTAB measuring system. For tree ring analysis, COFECHA and ARSTAN program were used. The average carbon stock of Linga Guthi Community Forest was 272.22±17.36 t/ha. Similarly, it has storage of 206.87± 4.47 t/ha AGTC, 41.37±2.19 t/ha BGTC, 23.814±1.00 t/ha SOC. The carbon sequestration rate of the forest was 2.22 Ct/ha/year. The average radial growth of pine trees in the forest was found to be 2.06 ± 0.13 mm/year. The maximum radial growth was 4.47 mm/yr. The oldest tree recorded in this forest was158 years with 58 cm diameter. However the average age of the forest was 98 years. The ring width chronology of 158 years was prepared for pine tree extending from 1854 to 2013 A.D.","PeriodicalId":89691,"journal":{"name":"Journal of natural history museum","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43366361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Status of herpetofauna in Rupandehi and Arghakhanchi districts, Nepal 尼泊尔Rupandehi和Arghakhanchi地区爬行动物区系现状

Journal of natural history museum Pub Date : 2018-12-01 DOI: 10.3126/jnhm.v30i0.27564

Pit Bahadur Nepali, N. Singh

{"title":"Status of herpetofauna in Rupandehi and Arghakhanchi districts, Nepal","authors":"Pit Bahadur Nepali, N. Singh","doi":"10.3126/jnhm.v30i0.27564","DOIUrl":"https://doi.org/10.3126/jnhm.v30i0.27564","url":null,"abstract":"Herpetofauna are unique creature which comprise both amphibians and reptiles. The present study was carried out on herpetofaunal diversity in Rupandehi and Arghakhanchi districts. Each of six sampling stations was conducted in the study areas. Ten standardized 10 x 200 m strip transects and 20-25 standard Quadrat sizes of 20 m x 20 m were set in each station. Observed museum specimens and questionnaire survey were also conducted during data collection. A total of 45 spe cies of herpetofauna was recorded with 9 species of amphibians) and 36 species of reptiles. Six species were from the family Ranidae, two species from Bufonidae and one speciesfrom Rhacophoridae. Lizards were represented by 11 species belonging to four different families. Each of Gekkonidae, Agamidae and Scincidae family was represented by 3 species and the Varanidae by two species. The family Crocodylidae was represented by one species. The order Testudines (turtles) was represented by 2 species from family trionychidae and bataguridae. Twenty two species of snakes were recorded from 6 different families. The amphibian species, namely; Euphlyctis cyanophlyctis, Zakerana nepalensis, Bufo melanostictus and B. stomaticusand reptile species Calotes versicolor were relatively abundant. Seven species of amphibians and18 species of reptiles were common in both districts. The study areas were diverse microhabitats due to the elevation from 71 m to 2004 m with plain, Churia and mountain range.","PeriodicalId":89691,"journal":{"name":"Journal of natural history museum","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3126/jnhm.v30i0.27564","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43307124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Some freshwater algae from Bagh-Jhoda wetland, Morang: new for Nepal 来自莫朗Bagh-Jhoda湿地的一些淡水藻类:尼泊尔的新物种

Journal of natural history museum Pub Date : 2018-12-01 DOI: 10.3126/jnhm.v30i0.27375

Ritu Rajopadhyaya, S. Rai

引用次数: 2

Physico-chemical parameters of Itahari sub-metropolitan fish pond, Nepal 尼泊尔伊塔哈里亚都市鱼塘的理化参数

Journal of natural history museum Pub Date : 2018-12-01 DOI: 10.3126/jnhm.v30i0.27542

G. Thapa, J. Pal

{"title":"Physico-chemical parameters of Itahari sub-metropolitan fish pond, Nepal","authors":"G. Thapa, J. Pal","doi":"10.3126/jnhm.v30i0.27542","DOIUrl":"https://doi.org/10.3126/jnhm.v30i0.27542","url":null,"abstract":"Itahari Sub-metropolitan pond is located in the centre of the city. Influence of variations in physico-chemical parameters on aquatic flora and fauna especially in fishes brought strong stress on fishes and increases the incidence of diseases leading to high mortality. Due to lack of adequate knowledge about it, productivity of ponds is very low. In the present study, maximum and minimum variations and correlation between different physico-chemical parameters - air temperature, water temperature, pH, turbidity, total dissolved solids, dissolved carbon dioxide, ammonia, dissolved oxygen, biological oxygen demand, chloride, total alkalinity, total hardness and phosphate were taken into consideration. The water quality of fish ponds were normal except high fluctuation of chloride 4.0 - 44.87mg/l and ammonia 0.48-13.6 mg/l during manuaring period and casual addition of wastes like toilet cleaners, caustic potash etc.. Due to sudden fall in DO less than 4 mg/l during April and May, 2014 and increment of ammonia after addition of toilet wastes in Sept.19, 2015 ; mass mortality of fishes Labeo rohita, Cirrhina mrigala, Hypothalamichthys molitrix, Aristichthysnobilis occurred in the study site.","PeriodicalId":89691,"journal":{"name":"Journal of natural history museum","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43978997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phytochemical Screening and Antimicrobial Activity Of Asparagus Racemosus Willd. and Asparagus Curillus Buch.-Ham. Ex Roxb 野生总状芦笋的植物化学筛选及抑菌活性研究。芦笋和芦笋。Roxb交货

Journal of natural history museum Pub Date : 2018-01-19 DOI: 10.3126/JNHM.V29I0.19041

R. Shrestha, Astha Shakya, K. Shrestha

{"title":"Phytochemical Screening and Antimicrobial Activity Of Asparagus Racemosus Willd. and Asparagus Curillus Buch.-Ham. Ex Roxb","authors":"R. Shrestha, Astha Shakya, K. Shrestha","doi":"10.3126/JNHM.V29I0.19041","DOIUrl":"https://doi.org/10.3126/JNHM.V29I0.19041","url":null,"abstract":"Asparagus racemosus Willd. is an important medicinal plant of tropical and subtropical regions of Nepal and India. Its medicinal usage has been reported in the Indian and British Pharmacopoeias and in traditional systems of medicine such as Ayurveda, Unani, and Siddha. Asparagus curillus Buch-Ham.ex Roxb. is also one of the species found in higher altitude of Nepal. Its roots are used as substitute for A. racemosus . Phytochemical investigation was done for these two species of Nepalese Asparagus as per Methodology for Analysis of Vegetable Drugs by I. Ciulei.1982. Phytochemical screening revealed the presence of coumarin, flavonoid, catecholic tannin, reducing compound in alcoholic extract of A. racemosus while its aqueous extract revealed polyuronoid, reducing compound, polyoses, saponin, gallic tannin, catecholic tannin, etc. Similarly, alcoholic extract of A. curillus revealed catecholic tannin, reducing compound and aqueous extract revealed polyuronoid polyoses, saponin, gallic tannin as main phytochemical compounds. Comparative antimicrobial activity of ethanolic extract of these two species has been evaluated using Kirby-Bauer Agar well diffusion method. The extracts were screened for their antimicrobial activity on nine different strains of human pathogenic microorganisms such as Escherichia coli, Salmonella typhi, Bacillus subtilis, Pseudomonas aeruginosa, Staphylococcus aureus, Klebsiella pneumoniae, Enterococcus faecalies, Saccharomyces cerevisiae and Candida albicans . Among them A. racemosus has shown selected antimicrobial effects against B. subtilis, E. coli, E. faecalis, S. cerevisiae and C. albicans with zone of inhibition of 25 mm in an average. While A. curillus showed effects on S. cerevisiae and C. albicans only with zone of inhibition about12 mm. J. Nat. Hist. Mus. Vol. 29, 2015, Page: 91-102","PeriodicalId":89691,"journal":{"name":"Journal of natural history museum","volume":"29 1","pages":"91-102"},"PeriodicalIF":0.0,"publicationDate":"2018-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3126/JNHM.V29I0.19041","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41478468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Editorial Vol.29 编辑Vol.29

Journal of natural history museum Pub Date : 2018-01-19 DOI: 10.3126/JNHM.V29I0.19044

Ramesh L. Shrestha

引用次数: 0

Forest Diversity and Carbon Sequestration In Resunga Sacred Grove, Gulmi, Nepal 尼泊尔Gulmi Resunga Sacred Grove的森林多样性和碳封存

Journal of natural history museum Pub Date : 2018-01-19 DOI: 10.3126/JNHM.V29I0.19038

B. K. Sharma, Chandra Prasad Pokharel, L. J. Shrestha

{"title":"Forest Diversity and Carbon Sequestration In Resunga Sacred Grove, Gulmi, Nepal","authors":"B. K. Sharma, Chandra Prasad Pokharel, L. J. Shrestha","doi":"10.3126/JNHM.V29I0.19038","DOIUrl":"https://doi.org/10.3126/JNHM.V29I0.19038","url":null,"abstract":"Resunga forest is a store-house of diverse wildlife and wild plants ranging from sub-tropical to temperate climatic zones in the midhill physiographic region. Aiming to assess the forest diversity and sequestrated carbon, this study was conducted in Resunga religious forest. Data were collected from systematically distributed plots at the interval of 50m elevation along the altitudinal gradients from 2100–2450 m elevation. Eight circular plots of 10 m radius were used to collect information on tree level characteristics. Importance value index, Shannon-Weiner index of diversity and evenness were used to assess the forest diversity. Published allometric functions were used to examine the aboveground tree biomass. Tree carbon stocks were calculated using carbon fraction value. Nineteen tree species were recorded from Rhododendron and oak forests. Comparing the forest types, Rhododendron forest was more diverse (H = 1.0) than oak forest (H = 0.9). Similarly, tree species were more evenly distributed (0.87) in the oak forest than that of Rhododendron forest (0.77). The vegetation carbon stock of Rhododendron forest was lower (101.8 t/ha) than that of oak forest (153.8 t/ha). Overall, the average vegetation carbon stocks in the Resunga Sacred Grove (RSG) was 127.75 t/ha. J. Nat. Hist. Mus. Vol. 29, 2015, Page: 60-69","PeriodicalId":89691,"journal":{"name":"Journal of natural history museum","volume":"29 1","pages":"60-69"},"PeriodicalIF":0.0,"publicationDate":"2018-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3126/JNHM.V29I0.19038","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44216586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Contributions of Botanists of Natural History Museum (Tribhuvan University) to Research and Education in Nepal 特里布万大学自然历史博物馆植物学家对尼泊尔研究和教育的贡献

Journal of natural history museum Pub Date : 2018-01-19 DOI: 10.3126/JNHM.V29I0.19043

D. R. Dangol

引用次数: 1

Status of Striped Hyena (Hyaena Hyaena Linnaeus, 1758) and Their Conservation Approaches in Rautahat and Sarlahi Forests, Nepal 尼泊尔ratahat和Sarlahi森林中条纹鬣狗(Hyaena Hyaena Linnaeus, 1758)的现状及其保护方法

Journal of natural history museum Pub Date : 2018-01-19 DOI: 10.3126/JNHM.V29I0.19037

S. Bhandari, B. Rijal, S. Khanal

引用次数: 11

Diversity of Wild Mushrooms In Rupandehi District, Western Nepal 尼泊尔西部Rupandehi地区野生蘑菇的多样性

Journal of natural history museum Pub Date : 2018-01-19 DOI: 10.3126/JNHM.V29I0.19035

H. Aryal

引用次数: 0