Bangladesh Journal of Botany最新文献_第6页

Assessment of soil quality in hanzhong city based on risk management of heavy metal pollution 基于重金属污染风险管理的汉中市土壤质量评价

4区生物学

Bangladesh Journal of Botany Pub Date : 2023-08-31 DOI: 10.3329/bjb.v52i20.68277

Tao Wang

{"title":"Assessment of soil quality in hanzhong city based on risk management of heavy metal pollution","authors":"Tao Wang","doi":"10.3329/bjb.v52i20.68277","DOIUrl":"https://doi.org/10.3329/bjb.v52i20.68277","url":null,"abstract":"In the present study, Hanzhong City was taken as an example, and the classification of soil heavy metal pollution risks was performed based on the evaluation of soil fertility status with soil physical and chemical properties as the main indicators. Results showed that the coefficients of variation of soil physical and chemical indicators in the study area were in the descending order: the soil fertility status showed a trend of increasing with decreasing terrain and increasing rivers. The high fertility areas were mainly distributed in the northwest and northeast of the plain area, while the low fertility areas were mainly distributed in the southeastern hilly and mountainous areas and in the western low-lying areas, and the transitional areas surrounded the low-fertility areas. At least 88.89% of the Cd samples and 98.61% of the Cr samples out of the eight heavy metals, Cd, Hg, As, Pb, Cr, Ni, Cu, and Zn, belonged to the priority protection class, while 11.11% of the Cd samples and 1.39% of the Cr samples belonged to the safe use class. The overall distribution of soil quality was similar to that of soil fertility status, while the distribution range of low-quality soil in the southeastern part was smaller and more concentrated. The above research results indicate that the introduction of the classification results of soil pollution risk control types generally reduces the soil fertility status correction and changes the spatial distribution pattern of the original soil fertility status to some extent. Bangladesh J. Bot. 52(2): 659-669, 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":"135946359","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

4区生物学

Bangladesh Journal of Botany Pub Date : 2023-08-31 DOI: 10.3329/bjb.v52i20.68196

None Jing He, None Yanan Li

引用次数: 0

Effects of brassinolide on the physiological characteristics of maize (Zea Mays L.) Cultivars Under salt stress. 油菜素内酯对玉米生理特性的影响盐胁迫下的栽培品种。

IF 0.3 4区生物学

Bangladesh Journal of Botany Pub Date : 2023-08-31 DOI: 10.3329/bjb.v52i2.68220

Biao Ji, J. Li, Yina Xia, Zan Li

引用次数: 0

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

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

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

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