Bangladesh Journal of Botany最新文献_第6页

Distribution characteristics of selenium and heavy metal elements in soil-crop system in ankang, shaanxi, china 安康土壤-作物系统中硒和重金属元素的分布特征

IF 0.3 4区生物学

Bangladesh Journal of Botany Pub Date : 2023-08-31 DOI: 10.3329/bjb.v52i2.68252

Aorui Li, Jiping Chen, Chi Wang, Zhimin Zhang, Hui Wang, H. Ji, Tianyu Sun, Zhaohua Zeng, Yan-Bing He

{"title":"Distribution characteristics of selenium and heavy metal elements in soil-crop system in ankang, shaanxi, china","authors":"Aorui Li, Jiping Chen, Chi Wang, Zhimin Zhang, Hui Wang, H. Ji, Tianyu Sun, Zhaohua Zeng, Yan-Bing He","doi":"10.3329/bjb.v52i2.68252","DOIUrl":"https://doi.org/10.3329/bjb.v52i2.68252","url":null,"abstract":"A total of 229 groups of root vegetables, rice, corn and their root soils were collected in Ankang, Shaanxi, to analyze the characteristics of element migration and transformation in crops and root soil, to compare the migration and enrichment capabilities of various elements in different crops, to explain the characteristics of root soil pH and element correlation, and provide a theoretical basis for agricultural development. Results showed that there were differences in the ability of crops to accumulate various elements in the soil. The absorption capacity of Se, Cd and Zn elements was strong, while the bioaccumulation ability of As, Pb and Cr elements was weak. The contents of Cr, As and Hg were the highest in rice, which were significantly higher than those in root vegetables and corn. The contents of Cd, Cu and Pb in root vegetables were the highest, significantly higher than those in rice and corn. The content of various elements in crops and root soil had a different intensity correlation. Generally speaking, the content of various elements in crops increased with the increase of root soil element content to a certain extent. There was a negative correlation between pH and soil elements, and there was a significant positive correlation between the elements in the root soil of different crops.\u0000Bangladesh J. Bot. 52(2): 649-657, 2023 (June) Special","PeriodicalId":8703,"journal":{"name":"Bangladesh Journal of Botany","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45183305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Carbon storage in arbor forests under the background of carbon neutrality 碳中和背景下乔木林的碳储存

IF 0.3 4区生物学

Bangladesh Journal of Botany Pub Date : 2023-08-31 DOI: 10.3329/bjb.v52i2.68286

L. Qi, Yanan Li

引用次数: 0

Hyperspectral multivariate linear prediction model of tobacco (nicotiana tabacum L.) Leaf nitrogen content 烟草(nicotiana tabacum L.)高光谱多元线性预测模型叶片含氮量

IF 0.3 4区生物学

Bangladesh Journal of Botany Pub Date : 2023-08-31 DOI: 10.3329/bjb.v52i2.68227

Tingfeng Guo, Wen Li, Liangyong Li, Ximing Zou

{"title":"Hyperspectral multivariate linear prediction model of tobacco (nicotiana tabacum L.) Leaf nitrogen content","authors":"Tingfeng Guo, Wen Li, Liangyong Li, Ximing Zou","doi":"10.3329/bjb.v52i2.68227","DOIUrl":"https://doi.org/10.3329/bjb.v52i2.68227","url":null,"abstract":"In order to accurately and effectively obtain the nitrogen content of tobacco leaves during the whole growth period, in the present study the field canopy spectrum of the three critical periods of tobacco rosette stage, vigorous growth stage and topping stage were used. The correlation analysis of field canopy spectrum, first derivative spectrum, hyperspectral parameters and vegetation index with the nitrogen content of tobacco leaves was carried out one by one, and the prediction model was established by multiple linear regression using the variables with the best correlation coefficient. Results showed that the first derivative spectrum, EVI II and green peak position had strong correlation, which is suitable for introducing multivariate equations as independent variables. Finally, the modeling determination coefficient (R2) was 0.66, RMSE was 0.40, and MAPE was 11%. The validation results showed that R2 was 0.73, RMSE was 0.38, and MAPE was 8.33%, which proved that this model could accurately predict the nitrogen content of tobacco leaves and could meet the requirements of large-scale statistical monitoring of tobacco quality indicators in the field.\u0000Bangladesh J. Bot. 52(2): 575-584, 2023 (June) Special","PeriodicalId":8703,"journal":{"name":"Bangladesh Journal of Botany","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45561495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spatio-temporal changes in ecological vulnerability and its driving factors in western jilin, china in the last 30 years 近30年吉林西部生态脆弱性时空变化及其驱动因素

IF 0.3 4区生物学

Bangladesh Journal of Botany Pub Date : 2023-08-31 DOI: 10.3329/bjb.v52i2.68228

Haoxuan Jiang, Chunwei Song, Cheng Han, Huishi Du

{"title":"Spatio-temporal changes in ecological vulnerability and its driving factors in western jilin, china in the last 30 years","authors":"Haoxuan Jiang, Chunwei Song, Cheng Han, Huishi Du","doi":"10.3329/bjb.v52i2.68228","DOIUrl":"https://doi.org/10.3329/bjb.v52i2.68228","url":null,"abstract":"In order to explore the quality of the ecological environment in the interlaced zone of agriculture and animal husbandry in western Jilin, this study used the vulnerability domain map evaluation model to select evaluation indicators based on GIS and RS technology. The principal component analysis method was used to carry out research on the ecological sensitivity of western Jilin from 1990 to 2020. Results showed that in terms of space-time distribution, severe and moderate vulnerability is mainly distributed in the northern part of the research area, and the moderate vulnerability area accounts for more than 73.13% of the area of the research area. From 2000 to 2020, the ecological vulnerability gradually decreased, and the overall ecological environment tended to improve, severe vulnerability is mainly distributed in unused land, and changes in different land types affect changes in ecological vulnerability, the ecological vulnerability in western Jilin has a strong correlation and is mainly located in the northern part of the research area. The area of high-high aggregation, hot spots and cold spots areas accounts for 1.84, 15.54 and 6.68% of the area of the research area, respectively.\u0000Bangladesh J. Bot. 52(2): 585-593, 2023 (June) Special","PeriodicalId":8703,"journal":{"name":"Bangladesh Journal of Botany","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43007740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of humic acid on chlorophyll content and root length of ryegrass (lolium multiflorum lam.) 腐植酸对黑麦草叶绿素含量和根系长度的影响

IF 0.3 4区生物学

Bangladesh Journal of Botany Pub Date : 2023-08-31 DOI: 10.3329/bjb.v52i2.68196

HE Jing, Li Yanan

引用次数: 0

Hyperspectral multivariate linear prediction model of tobacco (nicotiana tabacum L.) Leaf nitrogen content 烟草(nicotiana tabacum L.)高光谱多元线性预测模型叶片含氮量

4区生物学

Bangladesh Journal of Botany Pub Date : 2023-08-31 DOI: 10.3329/bjb.v52i20.68227

Ting Guo, Wen Li, Liangyong Li, Ximing Zou

{"title":"Hyperspectral multivariate linear prediction model of tobacco (nicotiana tabacum L.) Leaf nitrogen content","authors":"Ting Guo, Wen Li, Liangyong Li, Ximing Zou","doi":"10.3329/bjb.v52i20.68227","DOIUrl":"https://doi.org/10.3329/bjb.v52i20.68227","url":null,"abstract":"In order to accurately and effectively obtain the nitrogen content of tobacco leaves during the whole growth period, in the present study the field canopy spectrum of the three critical periods of tobacco rosette stage, vigorous growth stage and topping stage were used. The correlation analysis of field canopy spectrum, first derivative spectrum, hyperspectral parameters and vegetation index with the nitrogen content of tobacco leaves was carried out one by one, and the prediction model was established by multiple linear regression using the variables with the best correlation coefficient. Results showed that the first derivative spectrum, EVI II and green peak position had strong correlation, which is suitable for introducing multivariate equations as independent variables. Finally, the modeling determination coefficient (R2) was 0.66, RMSE was 0.40, and MAPE was 11%. The validation results showed that R2 was 0.73, RMSE was 0.38, and MAPE was 8.33%, which proved that this model could accurately predict the nitrogen content of tobacco leaves and could meet the requirements of large-scale statistical monitoring of tobacco quality indicators in the field. Bangladesh J. Bot. 52(2): 575-584, 2023 (June) Special","PeriodicalId":8703,"journal":{"name":"Bangladesh Journal of Botany","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135946024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of plasma treatment on germination and biochemical content of chicory (sonchus oleraceus l.) 血浆处理对菊苣种子萌发及生化成分的影响

IF 0.3 4区生物学

Bangladesh Journal of Botany Pub Date : 2023-08-31 DOI: 10.3329/bjb.v52i2.68192

Yusen Yang, Yanmei Song, Xinran Wang, Ying Peng, Jing Chen

引用次数: 0

Effects of adding loose materials on improvement of the physical properties of sediment and growth of green plants 添加松散材料对改善沉积物物理性质和绿色植物生长的影响

IF 0.3 4区生物学

Bangladesh Journal of Botany Pub Date : 2023-08-31 DOI: 10.3329/bjb.v52i2.68199

IU Yann, UO Chaog, E. Shenglany, Y. I. W. Ang, U. Yah

{"title":"Effects of adding loose materials on improvement of the physical properties of sediment and growth of green plants","authors":"IU Yann, UO Chaog, E. Shenglany, Y. I. W. Ang, U. Yah","doi":"10.3329/bjb.v52i2.68199","DOIUrl":"https://doi.org/10.3329/bjb.v52i2.68199","url":null,"abstract":"Effects of different loose materials on the growth of green plants in the sediment and the improvement of the physical properties of the sediment were studied in pot experiments. Two types of loose materials, vermiculite and shale, were chosen. The addition ratio of loose materials and sediment were set to 1:1, 1:2, 1:5. Results showed that, the sediment after adding vermiculite was more conducive to the growth of ryegrass, and when the addition ratio was 1:1 and 1:2, the growth conditions of ryegrass were the best. The fresh weight of ryegrass in the treatment with the ratio of vermiculite and sediment at 1:1 increased by 43.94% compared to that in pure sediment; In the treatment with the ratio of 1:2, the plant height increased the most, which was 6 cm higher than that in pure sediment; When large amount of loose materials were added, the moisture content of the sediment increased compared to the pure sediment treatment; after the addition of loose materials, the bulk density of the sediment decreased, and the addition of too large amount would easily lead to a low bulk density, which was not conducive to water and fertilizer retention; The addition of vermiculite can reduce the bottom sediment.\u0000Bangladesh J. Bot. 52(2): 487-493, 2023 (June) Special","PeriodicalId":8703,"journal":{"name":"Bangladesh Journal of Botany","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41795209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Haploid doubling effect of waxy maize under different ecological environment 不同生态环境下糯玉米单倍体加倍效应研究

4区生物学

Bangladesh Journal of Botany Pub Date : 2023-08-31 DOI: 10.3329/bjb.v52i20.68215

None Xilin Ning, None Ying Xu, None Long Jiang, None Baiming Yang, None Rui Chen, None Mingkun Wang, None Nan Wu

引用次数: 0

Dynamic monitoring of vegetation coverage in weibei dry plateau based on remote sensing 基于遥感的weibei干旱高原植被覆盖动态监测

IF 0.3 4区生物学

Bangladesh Journal of Botany Pub Date : 2023-08-31 DOI: 10.3329/bjb.v52i2.68198

Li Yanan, Qi Li

{"title":"Dynamic monitoring of vegetation coverage in weibei dry plateau based on remote sensing","authors":"Li Yanan, Qi Li","doi":"10.3329/bjb.v52i2.68198","DOIUrl":"https://doi.org/10.3329/bjb.v52i2.68198","url":null,"abstract":"Taking Fu County, a typical area of Weibei dry plateau, as the research object, the normalized difference vegetation index ( NDVI ) was calculated by using Landsat 8 OLI remote sensing image. On this basis, the vegetation coverage in the study area was estimated and graded according to the binary pixel model, and the dynamic changes of vegetation coverage in the study area from 2013 to 2017 were quantitatively analyzed. Results showed that the overall NDVI value in the study area increased from 2013 to 2017. The vegetation cover in the study area is dominated by extremely high vegetation cover. The coverage area of low, medium and high vegetation cover decreases, and the coverage area of extremely high and extremely low vegetation cover increases. The coverage area of high vegetation and extremely high vegetation cover accounts for more than 75% of the study area. The study area showed a transfer trend of extremely low vegetation→low vegetation→medium vegetation→high vegetation coverage. The vegetation coverage generally developed to a good trend, but there was also a transfer of high vegetation coverage to medium vegetation coverage. The areas with the greatest changes in the study area are mainly concentrated in the northwest and near the southern Damagou, and the high NDVI area of Ziwuling National Nature Reserve has moved eastward and narrowed. Accuracy assessment indicates that the dynamic monitoring using the fused image time series produces results with relatively high accuracy.\u0000Bangladesh J. Bot. 52(2): 479-486, 2023 (June) Special","PeriodicalId":8703,"journal":{"name":"Bangladesh Journal of Botany","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44999390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0