林业科学研究 Pub Date : 2017-04-05 DOI: 10.4172/2168-9776.1000153

M. Pramanik

引用次数: 9

Estimating Soil Carbon Stocks in a Dry Miombo Ecosystem Using Remote Sensing 干旱苗波生态系统土壤碳储量的遥感估算

林业科学研究 Pub Date : 2017-04-04 DOI: 10.4172/2168-9776.1000198

Richard Muchena

{"title":"Estimating Soil Carbon Stocks in a Dry Miombo Ecosystem Using Remote Sensing","authors":"Richard Muchena","doi":"10.4172/2168-9776.1000198","DOIUrl":"https://doi.org/10.4172/2168-9776.1000198","url":null,"abstract":"The total carbon pool in dry Miombo ecosystems is often underestimated. This study sought to close this gap by modelling the relationship between the above ground fresh woody biomass carbon pool and the soil carbon pool using both ground based methods and remote sensing methods. A total of thirty (30 m × 30 m) plots were randomly selected within the study area. Tree height and diameter at breast height (dbh) are the vegetation characteristics, which were measured in the present study. These variables were later used to calculate the above ground fresh biomass carbon per hectare. Soil samples were randomly collected from five points within the plots. The soil samples were analyzed for soil organic carbon (SOC). Three remotely sensed vegetation indices are-Ratio Vegetation Index (RVI), Normalized Difference Vegetation Index (NDVI), and the Soil Adjusted Vegetation Index (SAVI), which were calculated using geometrically and radiometrically corrected Landsat 8 Operational Land Imager (OLI) satellite images. Correlation and regression analysis were used to quantify the relationship between SOC, above ground fresh woody biomass carbon and remotely sensed vegetation indices. Results showed that, above ground fresh woody biomass carbon was significantly related to SOC in the top soil layer (0-15 cm) and not the deeper soil layer (15-30 cm). The significant positive relationship between above ground fresh woody biomass carbon and SOC suggests that, above ground fresh woody biomass carbon can be used as a proxy to estimate SOC in the top soil layer (0-15 cm) in dry Miombo ecosystems. Remotely sensed vegetation indices were not significantly (p>0.05) related to the SOC regardless of depth. This result implies that further work is needed before multi-spectral optical remote sensing can be used as a tool to estimate SOC in dry Miombo ecosystems.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"33 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2017-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81781615","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: 6

Biomass and Carbon Allocation of 10-Year-Old Poplars (Populous alba L.) Plantations in the South West of Iran 10年杨树生物量和碳分配伊朗西南部的种植园

林业科学研究 Pub Date : 2017-04-01 DOI: 10.4172/2168-9776.1000199

A. H. S. Kouchi, fereshteh moradian fard, T. R. Shahraji, Y. Iranmanesh

引用次数: 0

Assessing Variability and Divergence of Jatropha curcas Linn. Germplasm Under Ex-situ Conditions 麻疯树的变异和分化评价。移地条件下的种质

林业科学研究 Pub Date : 2017-04-01 DOI: 10.4172/2168-9776.1000201

B. Divakara

{"title":"Assessing Variability and Divergence of Jatropha curcas Linn. Germplasm Under Ex-situ Conditions","authors":"B. Divakara","doi":"10.4172/2168-9776.1000201","DOIUrl":"https://doi.org/10.4172/2168-9776.1000201","url":null,"abstract":"An evaluation of 100 genotypes of Jatropha curcas L. was carried out to assess variability and character association and to identify diverse genotypes with superior growth traits. Variability studies revealed that, 39 accessions performed better in terms of above average values for volume index (479.41 cm3), indicating better vigor of the plants. Genotypes IC 555380, IC 555381, IC 555379, IC 569133 were found to be superior on the basis of plant height (100.34 cm), collar diameter (3.59 cm), number of branches (3.34) and volume index (1054.91 cm3) respectively. A wide range of variation was observed for plant height (41.11-100.34 cm), collar diameter (1.95-3.59 cm), branch number (1.36-3.34) and volume index (172.10-1045.91 cm3). Estimates of broad sense heritability ranged from 5.28 to 29.78%, genetic advance in percent of the mean ranged between 4.24 and 32.82 with number of branches giving the lowest value and volume index giving the highest value. All the growth traits showed positive significant correlation at both genetic and phenotypic levels with volume index. Path analysis of growth traits revealed that the height (0.719) is the most pronounced trait contributing directly to volume index followed by collar diameter (0.206) and number of branches (0.110). Diversity analysis using Mahalanobis D2 resulted in 7 clusters. Genotypes in cluster 2,3,4,5, and 6 have combination of desirable traits and can be directly selected for further improvement.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"87 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91110659","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: 2

Significance of Ethanol Product of Gmelina arborea 小木犀草乙醇产物的意义

林业科学研究 Pub Date : 2017-03-31 DOI: 10.4172/2168-9776.1000196

A. Afe

引用次数: 0

Analyzing Populous Seedling Resistance towards Heavy Metal Contamination 苗木对重金属污染的抗性分析

林业科学研究 Pub Date : 2017-03-17 DOI: 10.4172/2168-9776.1000195

Amirhossein Firuzan, S. Hashemi

引用次数: 0

Vegetative Community Development Over 30 Years within Pine Plantations on Reclaimed Mine Land in East 东部矿区复垦松林30年植被群落发展

林业科学研究 Pub Date : 2017-02-19 DOI: 10.4172/2168-9776.1000194

Christy L. Christian, B. Oswald, H. Williams, K. Farrish

{"title":"Vegetative Community Development Over 30 Years within Pine Plantations on Reclaimed Mine Land in East","authors":"Christy L. Christian, B. Oswald, H. Williams, K. Farrish","doi":"10.4172/2168-9776.1000194","DOIUrl":"https://doi.org/10.4172/2168-9776.1000194","url":null,"abstract":"Reclamation of surface mines to plantation forests is a management option that reestablishes both economic and ecological functions after mining. This study investigated vegetative community characteristics (composition, richness, importance) over time in loblolly pine (Pinus taeda L.) plantations established over a thirty-year period on reclaimed lignite coal surface mine land in East Texas, United States. The open landscape of newly planted loblolly pine plantations on reclaimed mine land was amenable to shade-intolerant herbaceous and grass species but, when the canopy closed, favored woody species (trees, shrubs, vines) within two decades after stand establishment. Given that these plantations were established on sites generally described as dry to mesic uplands, species composition was generally congruent with East Texas ecology. Community composition, species richness and species importance were discussed, and loblolly pine growth data and vegetative community characteristics of unmined loblolly pine plantation sites in East Texas were compared to reclaimed sites. Surface mined lands reclaimed to plantation forests are ideal locations to conduct further research on how biodiversity and other ecosystems services can be improved while maintaining intended economic and ecological purposes.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"35 1","pages":"1-11"},"PeriodicalIF":0.0,"publicationDate":"2017-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82671703","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

Economic Evaluation of Different Land Use Systems in North Western Region of Punjab, India 印度旁遮普邦西北部不同土地利用制度的经济评价

林业科学研究 Pub Date : 2017-01-01 DOI: 10.4172/2168-9776.1000192

S. Rani, A. Rajasekaran, D. Benbi, S. Chauhan

{"title":"Economic Evaluation of Different Land Use Systems in North Western Region of Punjab, India","authors":"S. Rani, A. Rajasekaran, D. Benbi, S. Chauhan","doi":"10.4172/2168-9776.1000192","DOIUrl":"https://doi.org/10.4172/2168-9776.1000192","url":null,"abstract":"The present study is the outcome of socio-economic diagnosis of traditional as well as commercial agroforestry practices followed by farmers in north western region of Punjab state, India. Tree species like P. deltoides, E. tereticornis and T. grandis are the main species of commercial agroforestry system, whereas, agricultural crops are grown traditionally. Simultaneously economics of P. pyrifolia based orchid was also included for evaluation. Results showed that tree based land use systems are economically viable and more profitable than pure agricultural crops. Highest B:C ratio was recorded in pure E. tereticornis plantations (3.30) after 5 years. Simultaneously higher B:C ratio (2.02) was recorded in P. deltoides+T. aestivum crop based land use system followed by T. grandis plantations (2.06), T. aestivum+O. sativa (1.89), T. aestivum+P. glaucum+fruit crop (1.72), B. napus+fruit crop (1.56) and B. napus+O. sativa (1.27) during period of study. E. tereticornis and P. deltoids based land use systems are economically viable and more profitable than other land use systems in this study area of Punjab. These land-use systems have also provided additional revenue and generated on farm employment opportunities.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"23 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86610162","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

Coppice Forests: Can Traditional Coppice Forest Management Help the Western Balkan Region? 灌木林:传统的灌木林管理能帮助西巴尔干地区吗?

林业科学研究 Pub Date : 2017-01-01 DOI: 10.4172/2168-9776.1000212

Zeneli G, Kola H

引用次数: 1

Micronutrient Content of Wild Vegetable Species Harvested in Forested and Non-Forested Areas in Southwest Burkina Faso 布基纳法索西南部森林和非森林地区收获的野生蔬菜的微量营养素含量

林业科学研究 Pub Date : 2017-01-01 DOI: 10.4172/2168-9776.100213

Hama Ba F, S. N., P. B., I. A., Maundu P, Diawara B

{"title":"Micronutrient Content of Wild Vegetable Species Harvested in Forested and Non-Forested Areas in Southwest Burkina Faso","authors":"Hama Ba F, S. N., P. B., I. A., Maundu P, Diawara B","doi":"10.4172/2168-9776.100213","DOIUrl":"https://doi.org/10.4172/2168-9776.100213","url":null,"abstract":"Generation of improved data on biodiverse foods for nutrition required that nutrient composition data be paired with proper botanical identification of species. This study assessed the nutrient content of ten wild vegetable species within and outside forested area in Burkina Faso. The ten-vegetable species included: Adansonia digitata L., Balanites aegyptiaca (L.) Del., Boerhavia diffusa L., Ceiba pentandra (L.) Gaertn., Cerathoteca sesamoides Endl., Crataeva religiosa Sieber, Ficus ovata Vahl, Moringa oleifera Lam., Strycnos spinosa Lam. and Vitex doniana Sweet. Additionally, the nutrient content for each of the species was compared for specimens collected within and outside forested areas. The iron levels ranged between 3.9-107.9 mg/100 g dry weight, the zinc levels from 11-22 mg/100 g dry weight, and the calcium levels from 25-4637 mg/100 g dry weight. The beta carotene levels were between 0 and 1772 μg/100 g dry weight and the protein levels between 6.6 and 26.4 g/100 g dry weight. The variation between species was often greater than the variation between sites, for a given species. However, large differences in nutrient content between collection sites were seen in many species for many nutrients. Across all species, calcium and protein tended to be higher in forested areas while zinc and iron tended to be lower and beta carotene was highly variable. We sought to better understand the impact of ecosystems services from forests on nutrient composition. Given our modest sample size and the high levels of variation in nutrient content it was difficult to draw conclusions from our results. Despite this, it is increasing clear that wild and traditional African leafy vegetables can play an important role in meeting the international recommendations for fruit and vegetable intake.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"69 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83177194","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

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