Pub Date : 2020-12-26DOI: 10.17951/PJSS.2020.53.2.245-259
Chafai Bouzegag
In this paper, we investigate the upwelling phenomenon using data of 97 monitoring stations in Ouargla and El Oued valleys located in the Low Septentrional Sahara south of Algeria. This research paper constitutes a contribution to the morphological, hydrological, hydrogeological study of the water table in order to understand the processes of upwelling groundwater. By using ArcGIS as a mapping tool, we worked on real UTM coordinates in X and Y for real data overlay drawn maps in clear and usable way of this phenomenon. On the other hand, we propose a new method based on neural network to model the level flctuation of the groundwater as well as to predict the evolution of the water table level. The obtained model allows us to warm this harmful phenomenon and plan sustainable solutions to protect the environment. The finding shows that the obtained model provides more significant accuracy rate and it drives more robustness in very challenging situation such as the heterogeneity of the data and sudden climate change comparing to the related research.
{"title":"Forecasting the upwelling phenomenon using an artificial neural network","authors":"Chafai Bouzegag","doi":"10.17951/PJSS.2020.53.2.245-259","DOIUrl":"https://doi.org/10.17951/PJSS.2020.53.2.245-259","url":null,"abstract":"In this paper, we investigate the upwelling phenomenon using data of 97 monitoring stations in Ouargla and El Oued valleys located in the Low Septentrional Sahara south of Algeria. This research paper constitutes a contribution to the morphological, hydrological, hydrogeological study of the water table in order to understand the processes of upwelling groundwater. By using ArcGIS as a mapping tool, we worked on real UTM coordinates in X and Y for real data overlay drawn maps in clear and usable way of this phenomenon. On the other hand, we propose a new method based on neural network to model the level flctuation of the groundwater as well as to predict the evolution of the water table level. The obtained model allows us to warm this harmful phenomenon and plan sustainable solutions to protect the environment. The finding shows that the obtained model provides more significant accuracy rate and it drives more robustness in very challenging situation such as the heterogeneity of the data and sudden climate change comparing to the related research.","PeriodicalId":20295,"journal":{"name":"Polish Journal of Soil Science","volume":"53 1","pages":"245-259"},"PeriodicalIF":0.0,"publicationDate":"2020-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43745823","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}
Pub Date : 2020-12-26DOI: 10.17951/PJSS.2020.53.2.261-271
Nataliia Ryzhenko, Yu. E. Bokhonov
In this paper the rate migration of trace metals (Pb, Cd, Cu, Zn) in polluted turf-podzol sandy loam soil was investigated in lysimetric experiment. Koller’s model was applied to obtain the ranking of the metals according to their rate of migration in soil to seepage water. Among the studied metals, the most intense migrant in the soil to seepage water was lead. Lead had highest and earliest maximum concentration in seepage water. Cooper had weak migration intensity. According to metals migration ability, they can be ranked in the following descending order: Pb > Cd > Zn > Cu. Findings are relevant to assessing the metal as dangerous.
{"title":"Trace metals' migration in soil to seepage water","authors":"Nataliia Ryzhenko, Yu. E. Bokhonov","doi":"10.17951/PJSS.2020.53.2.261-271","DOIUrl":"https://doi.org/10.17951/PJSS.2020.53.2.261-271","url":null,"abstract":"In this paper the rate migration of trace metals (Pb, Cd, Cu, Zn) in polluted turf-podzol sandy loam soil was investigated in lysimetric experiment. Koller’s model was applied to obtain the ranking of the metals according to their rate of migration in soil to seepage water. Among the studied metals, the most intense migrant in the soil to seepage water was lead. Lead had highest and earliest maximum concentration in seepage water. Cooper had weak migration intensity. According to metals migration ability, they can be ranked in the following descending order: Pb > Cd > Zn > Cu. Findings are relevant to assessing the metal as dangerous.","PeriodicalId":20295,"journal":{"name":"Polish Journal of Soil Science","volume":"53 1","pages":"261-271"},"PeriodicalIF":0.0,"publicationDate":"2020-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43376586","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}
Pub Date : 2020-12-26DOI: 10.17951/PJSS.2020.53.2.181-198
A. Dey, P. Srivastava, S. P. Pachauri, A. Shukla
In a 120-day incubation study, farmyard manure (FYM), mushroom compost (MC), poultry manure (PM), vermi-compost (VC), biogas slurry (BS) and biochar from Lantana sp.; a common weed (BC) each added at 15 t ha-1 significantly increased soil electrical conductivity and organic C content, however, only VC failed to increase soil organic C content significantly but increased soil pH when compared with the control sample. Among organic amendments, FYM, MC, VC and BS increased DTPA-extractable Zn and Mn in soil significantly when compared with the control sample, while BC was significantly effective in regard to increasing both DTPA-extractable Mn and hot water soluble B when compared with the control sample. Application of FYM and MC significantly increased DTPA-extractable Cu and Fe, respectively when compared with the control sample. Simple correlation and path coefficient analysis were performed to identify key chemical fractions of micronutrients in soil having the direct and indirect effects on availability of micronutrients in organically amended soils. Based on soil extractable concentrations of micronutrients in organically amended soils, FYM appeared to be the best source of Zn, Cu and Mn, while MC could serve as the best source of Fe. Biochar from Lantana sp. may serve as a good source of B.
{"title":"Effect of application of some organic amendments on soil properties, extractable micronutrients and their chemical fractions in a sandy loam soil","authors":"A. Dey, P. Srivastava, S. P. Pachauri, A. Shukla","doi":"10.17951/PJSS.2020.53.2.181-198","DOIUrl":"https://doi.org/10.17951/PJSS.2020.53.2.181-198","url":null,"abstract":"In a 120-day incubation study, farmyard manure (FYM), mushroom compost (MC), poultry manure (PM), vermi-compost (VC), biogas slurry (BS) and biochar from Lantana sp.; a common weed (BC) each added at 15 t ha-1 significantly increased soil electrical conductivity and organic C content, however, only VC failed to increase soil organic C content significantly but increased soil pH when compared with the control sample. Among organic amendments, FYM, MC, VC and BS increased DTPA-extractable Zn and Mn in soil significantly when compared with the control sample, while BC was significantly effective in regard to increasing both DTPA-extractable Mn and hot water soluble B when compared with the control sample. Application of FYM and MC significantly increased DTPA-extractable Cu and Fe, respectively when compared with the control sample. Simple correlation and path coefficient analysis were performed to identify key chemical fractions of micronutrients in soil having the direct and indirect effects on availability of micronutrients in organically amended soils. Based on soil extractable concentrations of micronutrients in organically amended soils, FYM appeared to be the best source of Zn, Cu and Mn, while MC could serve as the best source of Fe. Biochar from Lantana sp. may serve as a good source of B.","PeriodicalId":20295,"journal":{"name":"Polish Journal of Soil Science","volume":"53 1","pages":"181-198"},"PeriodicalIF":0.0,"publicationDate":"2020-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47566914","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}
Pub Date : 2020-12-26DOI: 10.17951/PJSS.2020.53.2.211-224
A. Rakhmetova
Currently, Kazakhstan is faced with the problem of a serious deterioration of the state of natural resources and the environment in all the most important environmental indicators. Almost a third of agricultural land is now degraded or is under serious threat, and more than 10 million hectares of potentially arable land in the past have been abandoned. This article discusses various methods and also carries out a comprehensive assessment of the environmental and economic balance of the Karaganda region. For the study on the state of the regional-scale object, the choice as the basis for analyzing the structure of the land seems to be the most adequate, since it is the land use device that objectively reflects the current state of industrial, agricultural and recreational impact. A comprehensive assessment of the ecological and economic balance of the territory of the Karaganda region was carried out according to the ratio of the main land-use categories taking into account the intensity of anthropogenic load. The coefficient of natural protection of the territory is determined and the outlined trends in the ecological and economic state are analyzed.
{"title":"Assessment of ecological and economic balance of the territory of the Karaganda region","authors":"A. Rakhmetova","doi":"10.17951/PJSS.2020.53.2.211-224","DOIUrl":"https://doi.org/10.17951/PJSS.2020.53.2.211-224","url":null,"abstract":"Currently, Kazakhstan is faced with the problem of a serious deterioration of the state of natural resources and the environment in all the most important environmental indicators. Almost a third of agricultural land is now degraded or is under serious threat, and more than 10 million hectares of potentially arable land in the past have been abandoned. This article discusses various methods and also carries out a comprehensive assessment of the environmental and economic balance of the Karaganda region. For the study on the state of the regional-scale object, the choice as the basis for analyzing the structure of the land seems to be the most adequate, since it is the land use device that objectively reflects the current state of industrial, agricultural and recreational impact. A comprehensive assessment of the ecological and economic balance of the territory of the Karaganda region was carried out according to the ratio of the main land-use categories taking into account the intensity of anthropogenic load. The coefficient of natural protection of the territory is determined and the outlined trends in the ecological and economic state are analyzed.","PeriodicalId":20295,"journal":{"name":"Polish Journal of Soil Science","volume":"53 1","pages":"211-224"},"PeriodicalIF":0.0,"publicationDate":"2020-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67645286","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}
Pub Date : 2020-12-26DOI: 10.17951/PJSS.2020.53.2.225-243
Fatemeh Meskini-Vishkaee, A. Jafarnejadi, Mohammad Hadi MOUSAVI-FAZL
Calcareous soils are widely spread in arid and semiarid regions. Carbonates can affect soil quality by influencing soil pH, structure and soil available water. There are lots of calcareous soils in Iran and especially Khuzestan province, so, providing sustainable agriculture evaluating the soil quality is essential. This study was done to evaluate the soil physical quality in dominant calcareous soil series in Khuzestan province, Iran. Soil physical quality indicators, including Dexter's S index, air capacity, soil available water capacity, relative water capacity and macroporosity were calculated. The results showed that, based on Dexter's S index, only one calcareous soil series had a poor physical quality (S < 0.035). However, the simultaneous evaluation of different soil quality indicators showed that 56 % and 22 % of studied calcareous soil series had limited aeration and soil available water, respectively. While the weakest soil physical quality was related to the southeastern soil of Ahvaz, with both aeration and soil available water limitations. The results showed that the proper assessment of soil physical quality in calcareous soils requires considering more physical indicators than just Dexter's S index related to soil aeration condition including air capacity and macroporosity.
{"title":"Evaluation of soil physical quality in dominant series of calcareous soils in south-west of Iran","authors":"Fatemeh Meskini-Vishkaee, A. Jafarnejadi, Mohammad Hadi MOUSAVI-FAZL","doi":"10.17951/PJSS.2020.53.2.225-243","DOIUrl":"https://doi.org/10.17951/PJSS.2020.53.2.225-243","url":null,"abstract":"Calcareous soils are widely spread in arid and semiarid regions. Carbonates can affect soil quality by influencing soil pH, structure and soil available water. There are lots of calcareous soils in Iran and especially Khuzestan province, so, providing sustainable agriculture evaluating the soil quality is essential. This study was done to evaluate the soil physical quality in dominant calcareous soil series in Khuzestan province, Iran. Soil physical quality indicators, including Dexter's S index, air capacity, soil available water capacity, relative water capacity and macroporosity were calculated. The results showed that, based on Dexter's S index, only one calcareous soil series had a poor physical quality (S < 0.035). However, the simultaneous evaluation of different soil quality indicators showed that 56 % and 22 % of studied calcareous soil series had limited aeration and soil available water, respectively. While the weakest soil physical quality was related to the southeastern soil of Ahvaz, with both aeration and soil available water limitations. The results showed that the proper assessment of soil physical quality in calcareous soils requires considering more physical indicators than just Dexter's S index related to soil aeration condition including air capacity and macroporosity.","PeriodicalId":20295,"journal":{"name":"Polish Journal of Soil Science","volume":"53 1","pages":"225-243"},"PeriodicalIF":0.0,"publicationDate":"2020-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49574804","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}
Pub Date : 2020-06-22DOI: 10.17951/pjss.2020.53.1.125
M. Ljuša, H. Čustović, S. Hodžić
The world agriculture uses about 70% of the world water resources in irrigation. The concern over the sustainability of water use as demand for agricultural, industrial, and domestic uses continues to increase. Conflicts between particular sectors result in tensions, which sometimes lead to “water wars” in different parts of the world. It is the reason why many national and international organizations are putting the water quantity and quality questions on the top of the world’s open questions/problems. The main aim of this paper is to present soil water balance of the Mediterranean region of Bosnia and Herzegovina, prepared for a long-term time series for two locations (Trebinje and Mostar) annually and during the vegetation period. The mean long-term data has been used as a base for future predicted calculation. The predicted PET was based on an increase in air temperature by 2°C and predicted decrease in precipitation by 25%. With so predicted calculated data of monthly PET and monthly precipitation the predicted soil water balance was done.
{"title":"The impact of climate change on soil water balance and agricultural production sustainability in Mediterranean part of Bosnia and Herzegovina","authors":"M. Ljuša, H. Čustović, S. Hodžić","doi":"10.17951/pjss.2020.53.1.125","DOIUrl":"https://doi.org/10.17951/pjss.2020.53.1.125","url":null,"abstract":"The world agriculture uses about 70% of the world water resources in irrigation. The concern over the sustainability of water use as demand for agricultural, industrial, and domestic uses continues to increase. Conflicts between particular sectors result in tensions, which sometimes lead to “water wars” in different parts of the world. It is the reason why many national and international organizations are putting the water quantity and quality questions on the top of the world’s open questions/problems. The main aim of this paper is to present soil water balance of the Mediterranean region of Bosnia and Herzegovina, prepared for a long-term time series for two locations (Trebinje and Mostar) annually and during the vegetation period. The mean long-term data has been used as a base for future predicted calculation. The predicted PET was based on an increase in air temperature by 2°C and predicted decrease in precipitation by 25%. With so predicted calculated data of monthly PET and monthly precipitation the predicted soil water balance was done.","PeriodicalId":20295,"journal":{"name":"Polish Journal of Soil Science","volume":"53 1","pages":"125"},"PeriodicalIF":0.0,"publicationDate":"2020-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45055065","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}
Pub Date : 2020-06-22DOI: 10.17951/pjss.2020.53.1.73
S. Pozniak, N. Havrysh
The article contains the authors’ reflections on the formation and substantiation of many aspects in soil science, concerning its connections with social sciences. Arguments about the exceptional importance of soil resources in the modern world and the importance of scientific research in soil science, which can become an important instrument of solving social problems, are found. It is shown that soil resources, being the basis of agricultural development, are the long-term capital through which different nations exist and develop. In order to maintain the normal living conditions of the population and to improve them, it is important to use this global resource wisely. The attitude of people to the soil is recognized as fundamental for nation’s sustainable development and, moreover, the life expectancy of a civilization may depend on the people attitude to soils. In order to maintain collective well-being of people, a long-term interest of the society in soil protection needs to be reoriented – this should become a priority task for our civilization. The current state of soils can be a characteristic of the development of society as well as a criterion for assessing the activity of government and social stability in the country.
{"title":"Social soil science as a new approach in soil science","authors":"S. Pozniak, N. Havrysh","doi":"10.17951/pjss.2020.53.1.73","DOIUrl":"https://doi.org/10.17951/pjss.2020.53.1.73","url":null,"abstract":"The article contains the authors’ reflections on the formation and substantiation of many aspects in soil science, concerning its connections with social sciences. Arguments about the exceptional importance of soil resources in the modern world and the importance of scientific research in soil science, which can become an important instrument of solving social problems, are found. It is shown that soil resources, being the basis of agricultural development, are the long-term capital through which different nations exist and develop. In order to maintain the normal living conditions of the population and to improve them, it is important to use this global resource wisely. The attitude of people to the soil is recognized as fundamental for nation’s sustainable development and, moreover, the life expectancy of a civilization may depend on the people attitude to soils. In order to maintain collective well-being of people, a long-term interest of the society in soil protection needs to be reoriented – this should become a priority task for our civilization. The current state of soils can be a characteristic of the development of society as well as a criterion for assessing the activity of government and social stability in the country.","PeriodicalId":20295,"journal":{"name":"Polish Journal of Soil Science","volume":"53 1","pages":"73"},"PeriodicalIF":0.0,"publicationDate":"2020-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41902787","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}
Pub Date : 2020-06-22DOI: 10.17951/pjss.2020.53.1.137
Z. Pankiv, T. Yamelynets
In the humid conditions, the most common ground forms are the ferruginous ones: ferrum concretions, marsh ore, ocher spots, etc. Mollic gley soils are widely spread along the periphery of marshes and are formed under the influence of mollic and gley processes on various soil-forming rocks under conditions of sporadically pulsating water regime and excessive moisture under the meadow and swamp biocenoses. The ferrum concretions are characteristic of all genetic horizons of mollic gley soils, except for the soil-forming rock, and their content ranges from 3.3% in the mollic to 47.1% in the lower transitional horizon. The gross iron content in the fine mollic gley soils, as well as in the ferrum concretions forms, increases with depth, and the maximum values are characteristic of the lower transition horizon. The lowest values of the gross iron content are characteristic of the fine soil-forming rock (16.0 mg / 100 g soil) and the mollic soil (66.4 mg / 100 g soil). It was established that the gross chemical content of the ferrum concretions forms is dominated by the iron oxides with the highest content in the ferrum concretions of the mollic soils (48.75%). Also the ferrum concretions forms of iron are characterized by a rather high content of aluminum oxides (5.59–7.92%). The highest values of the accumulation coefficient are characteristic of the iron oxide (Kx = 7.21–2.58), which confirms the hypothesis of the dominant role of its compounds in the formation of the ferrum concretions forms.
{"title":"Ferrum concretions forms in the mollic gley soils of Low (Male) Polissya","authors":"Z. Pankiv, T. Yamelynets","doi":"10.17951/pjss.2020.53.1.137","DOIUrl":"https://doi.org/10.17951/pjss.2020.53.1.137","url":null,"abstract":"In the humid conditions, the most common ground forms are the ferruginous ones: ferrum concretions, marsh ore, ocher spots, etc. Mollic gley soils are widely spread along the periphery of marshes and are formed under the influence of mollic and gley processes on various soil-forming rocks under conditions of sporadically pulsating water regime and excessive moisture under the meadow and swamp biocenoses. The ferrum concretions are characteristic of all genetic horizons of mollic gley soils, except for the soil-forming rock, and their content ranges from 3.3% in the mollic to 47.1% in the lower transitional horizon. The gross iron content in the fine mollic gley soils, as well as in the ferrum concretions forms, increases with depth, and the maximum values are characteristic of the lower transition horizon. The lowest values of the gross iron content are characteristic of the fine soil-forming rock (16.0 mg / 100 g soil) and the mollic soil (66.4 mg / 100 g soil). It was established that the gross chemical content of the ferrum concretions forms is dominated by the iron oxides with the highest content in the ferrum concretions of the mollic soils (48.75%). Also the ferrum concretions forms of iron are characterized by a rather high content of aluminum oxides (5.59–7.92%). The highest values of the accumulation coefficient are characteristic of the iron oxide (Kx = 7.21–2.58), which confirms the hypothesis of the dominant role of its compounds in the formation of the ferrum concretions forms.","PeriodicalId":20295,"journal":{"name":"Polish Journal of Soil Science","volume":"53 1","pages":"137"},"PeriodicalIF":0.0,"publicationDate":"2020-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46989990","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}
Pub Date : 2020-06-22DOI: 10.17951/pjss.2020.53.1.97
L. Parviz
The aim of the present research is the determination of soil color by spectral bands and indices obtained from MODIS images. For this purpose, soil samples were collected from East Azerbaijan Province (Iran) and their color and texture were investigated through Munsell color system and hydrometer method, respectively. Stepwise regression, principle component analysis and sensitivity function methods were employed to find the dominant indices and bands using artificial neural network (ANN) as one of the machine learning techniques. The improved indices as the model input had better performance, for example, the calculation of correlation coefficient between indices and hue showed 51.48% increase of correlation coefficient with comparison of the normalized difference vegetation index (NDVI) to modified soil adjustment vegetation index (MSAVI) and 54.54% correlation enhancement of soil adjustment vegetation index (SAVI) compared to MSAVI. Stepwise regression method along with error criteria decline may enhance the performance of soil color model. In comparison with multivariate regression, ANN model exhibited better performance (with a 12.61% mean absolute error [MAE] decline). Temporal variation of modified perpendicular drought index (MPDI) as well as band 31 could justify the Munsell soil color components variations specifically chroma and hue. MPDI and thermal bands could be employed as a precise indicator in soil color analysis. Thus, remote sensing data combined with machine learning technique can clarify the procedure potential for soil color determination.
{"title":"Performance evaluation of remote sensing data with machine learning technique to determine soil color","authors":"L. Parviz","doi":"10.17951/pjss.2020.53.1.97","DOIUrl":"https://doi.org/10.17951/pjss.2020.53.1.97","url":null,"abstract":"The aim of the present research is the determination of soil color by spectral bands and indices obtained from MODIS images. For this purpose, soil samples were collected from East Azerbaijan Province (Iran) and their color and texture were investigated through Munsell color system and hydrometer method, respectively. Stepwise regression, principle component analysis and sensitivity function methods were employed to find the dominant indices and bands using artificial neural network (ANN) as one of the machine learning techniques. The improved indices as the model input had better performance, for example, the calculation of correlation coefficient between indices and hue showed 51.48% increase of correlation coefficient with comparison of the normalized difference vegetation index (NDVI) to modified soil adjustment vegetation index (MSAVI) and 54.54% correlation enhancement of soil adjustment vegetation index (SAVI) compared to MSAVI. Stepwise regression method along with error criteria decline may enhance the performance of soil color model. In comparison with multivariate regression, ANN model exhibited better performance (with a 12.61% mean absolute error [MAE] decline). Temporal variation of modified perpendicular drought index (MPDI) as well as band 31 could justify the Munsell soil color components variations specifically chroma and hue. MPDI and thermal bands could be employed as a precise indicator in soil color analysis. Thus, remote sensing data combined with machine learning technique can clarify the procedure potential for soil color determination.","PeriodicalId":20295,"journal":{"name":"Polish Journal of Soil Science","volume":"53 1","pages":"97"},"PeriodicalIF":0.0,"publicationDate":"2020-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44207201","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}
Pub Date : 2020-06-22DOI: 10.17951/PJSS.2020.53.1.21
Rezvan Mashyekhi, H. Emami, Fateme Naghizade Asl
This research was conducted to evaluate the effects of biochar and barley residues on some physicochemical properties of silty loam soil and water erosion using water erosion simulator. Biochar was produced from pistachio shells under slow pyrolysis at 500°C under anaerobic condition. Biochar and barley residues were mixed to soils at three rates of 0, 0.5 and 1% (by weight), and 6.5 kg of soil was filled in trays with length, wide and height of 35 × 20 × 10 cm, respectively. The experiments were performed in 3 repetitions for 4 months as a completely randomized design. The results showed that application of 1% of biochar significantly increased P (phosphorus), K (potassium) and OC (organic carbon) of the soil in comparison with control. Also, application at both levels (0.5 and 1%) of barley residues significantly increased P, K, TN (total nitrogen), and OC. Application of biochar and barley residues significantly increased the mean weight diameter of aggregates, plant available water content, and saturated moisture content and significantly decreased water dispersible clay (p < 0.05). Consequently, the amount of water erosion decreased at the rainfall intensity of 60 mm·h-1 during 20 minutes. Generally, the effect of barley residues to improve soil properties was higher than the biochar.
{"title":"The influence of pistachio shell biochar and barley residues on soil properties","authors":"Rezvan Mashyekhi, H. Emami, Fateme Naghizade Asl","doi":"10.17951/PJSS.2020.53.1.21","DOIUrl":"https://doi.org/10.17951/PJSS.2020.53.1.21","url":null,"abstract":"This research was conducted to evaluate the effects of biochar and barley residues on some physicochemical properties of silty loam soil and water erosion using water erosion simulator. Biochar was produced from pistachio shells under slow pyrolysis at 500°C under anaerobic condition. Biochar and barley residues were mixed to soils at three rates of 0, 0.5 and 1% (by weight), and 6.5 kg of soil was filled in trays with length, wide and height of 35 × 20 × 10 cm, respectively. The experiments were performed in 3 repetitions for 4 months as a completely randomized design. The results showed that application of 1% of biochar significantly increased P (phosphorus), K (potassium) and OC (organic carbon) of the soil in comparison with control. Also, application at both levels (0.5 and 1%) of barley residues significantly increased P, K, TN (total nitrogen), and OC. Application of biochar and barley residues significantly increased the mean weight diameter of aggregates, plant available water content, and saturated moisture content and significantly decreased water dispersible clay (p < 0.05). Consequently, the amount of water erosion decreased at the rainfall intensity of 60 mm·h-1 during 20 minutes. Generally, the effect of barley residues to improve soil properties was higher than the biochar.","PeriodicalId":20295,"journal":{"name":"Polish Journal of Soil Science","volume":"53 1","pages":"21"},"PeriodicalIF":0.0,"publicationDate":"2020-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43953623","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}
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