Current World Environment最新文献_第9页

Long-term Assessment of Precipitation Behaviour in Bihar (1901-2021): Patterns, Trends and Observed Variability 比哈尔邦降水行为的长期评估(1901-2021):模式、趋势和观测变率

Current World Environment Pub Date : 2023-08-31 DOI: 10.12944/cwe.18.2.19

Manu Raj Sharma, Sukeshi Priya

引用次数: 0

Assessment of Trace Element Concentrations in Groundwater Sources of a Rural Village in Kerala, India 印度喀拉拉邦某农村地下水源微量元素浓度评估

Current World Environment Pub Date : 2023-08-31 DOI: 10.12944/cwe.18.2.34

Muhammed Thaniem, Anupama Prakash, Muniyandi Muniasamy, Rangasamy Eeshwar, Palanisamy Sundarabalan

{"title":"Assessment of Trace Element Concentrations in Groundwater Sources of a Rural Village in Kerala, India","authors":"Muhammed Thaniem, Anupama Prakash, Muniyandi Muniasamy, Rangasamy Eeshwar, Palanisamy Sundarabalan","doi":"10.12944/cwe.18.2.34","DOIUrl":"https://doi.org/10.12944/cwe.18.2.34","url":null,"abstract":"Water is an essential part of all living organisms. India is already experiencing the effects of the impending global freshwater crisis in terms of water quantity and quality. The study, which was carried out in a rural village (Villiappally Gramapanchayath) in Kerala, sought to quantify the level of trace elements in the ground water and to determine how they affected the quality of the water suitable for human use. Twenty-two public wells that are used by the residents for their everyday needs are sampled in the pre-monsoon for the analysis. ICP-MS was used to analyse the water samples for the presence of the heavy metals Zn, Pb, Fe, Cd, As, and Al. The acquired value from ICP-MS analysis is compared with BIS standard values of drinking water quality. From the analysed heavy metals, cadmium and iron in some of the wells are exceeding the permissible limit of BIS. HPI of each well is carried out and find out that DW1, DW2 and DW14 is not fit for drinking purpose. By analysing the Metal Index (MI) out of 22 wells, 9 wells are pure in quality and others are slightly to moderately affected. Certain metals in different wells shows slight greater concentration than the permissible limits of BIS. These might be taken into account for a safer drinking water.","PeriodicalId":10878,"journal":{"name":"Current World Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135989797","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

Multitemporal Analysis of Land Use/Cover Changes and Landscape Fragmentation in Murshidabad District of West Bengal, India 印度西孟加拉邦穆尔西达巴德地区土地利用/覆被变化与景观破碎化的多时相分析

Current World Environment Pub Date : 2023-08-31 DOI: 10.12944/cwe.18.2.18

Md. Mustaquim, Woheeul Islam

{"title":"Multitemporal Analysis of Land Use/Cover Changes and Landscape Fragmentation in Murshidabad District of West Bengal, India","authors":"Md. Mustaquim, Woheeul Islam","doi":"10.12944/cwe.18.2.18","DOIUrl":"https://doi.org/10.12944/cwe.18.2.18","url":null,"abstract":"Rapid population growth, human migration, and commercial activities are changing land use and Land cover at a faster rate. The human being's need and greed to sustain themselves alter the earth's natural environment, and that change affected us. However, poor and unmanageable land conversion led to severe environmental effects. For planning and management purposes, precise information regarding land use and its characteristics is required to ensure the sustainability of the area. The current study uses multi-temporal satellite images to analyze the decadal change from 1991 to 2021. Supervised image classification is performed using the Maximum likelihood classifier. The main goal of this study is to compare post-classification results using change vector analysis and analyze human impact on the environment using FRAGSTAT. Fragstat is a widely used software program designed for analyzing spatial patterns in categorical maps. It is commonly employed in landscape ecology, conservation biology, and land management studies. The primary purpose of Fragstats is to quantify and assess the composition and configuration of patches or landscape elements within a given area. The built-up area increased from 2.57% to 8.41% over the past 30 years, while the agricultural land decreased from 83.51% to 70.05%. It was observed that the density of patches and percentage of landscape reduction over time, the rise in the number of patches for agricultural class from 3570 in 1991 to 10173 in 2021 indicates that spatial diversity is increasing in the class with higher levels of anthropogenic disturbances. Moreover, in landscape-level indices, the number of patch and landscape shape index increases, and a fall in the largest patch index indicate that the landscape is becoming more complicated and fragmented. To achieve the sustainable land-use planning and safeguard natural ecosystems and biodiversity from anthropogenic activities, land-use change maps are utilized as an early warning system.","PeriodicalId":10878,"journal":{"name":"Current World Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135988924","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

Evaluation of the Drought Trend Alongside of Change Point: A Study of the Purulia District in West Bengal, India 基于变化点的干旱趋势评价——以印度西孟加拉邦普鲁里亚地区为例

Current World Environment Pub Date : 2023-08-31 DOI: 10.12944/cwe.18.2.10

Shrinwantu Raha, Sayan Deb

{"title":"Evaluation of the Drought Trend Alongside of Change Point: A Study of the Purulia District in West Bengal, India","authors":"Shrinwantu Raha, Sayan Deb","doi":"10.12944/cwe.18.2.10","DOIUrl":"https://doi.org/10.12944/cwe.18.2.10","url":null,"abstract":"Since the drought is a significant issue in India, therefore, the scientists should pay close attention in order to manage it. Purulia District experienced the drought on numerous occasions in the past ten years, but the accurate and definite conclusions have not arrived yet. Hence, the Standardized Precipitation Index (SPI) for the 34 years (1979–2014) was utilised in this research together with the change point to evaluate the annual and seasonal drought in the Purulia District. Theil Sen's slope and the Mann-Kendal (MK) test were both employed to determine the trend and its’ magnitude. A trend-free pre-whitening technique was used to remove the influence of lag-1 correlation data from the series. The 1988-89 was marked as the best probable single change (shift) point in the time series of SPI. By calculating the percentage deviation from the SPI's mean trend, the magnitude of the change was calculated. The percentage change of Sen's slope and MK test was high (+ve) at the eastern parts of Purulia, whereas it was observed as the smallest at the southern parts of the region. Thus, it could be concluded that the drought had begun to spread to the study region's eastern sections after the change point. As Purulia is dependent on agricultural crop production, this research would significantly contribute to agricultural planning following the local level management of crop water and rain-water harvesting. Therefore, this research is extremely important for the drought risk management on a regional scale.","PeriodicalId":10878,"journal":{"name":"Current World Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135988614","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

How to Enhance Circular Agriculture Models at Micro-Level in Vietnam? A Review 越南如何在微观层面强化循环农业模式?回顾

Current World Environment Pub Date : 2023-08-31 DOI: 10.12944/cwe.18.2.05

Nguyen Thi Hai Ninh, Nguyen Phuong Le, Do Kim Chung

{"title":"How to Enhance Circular Agriculture Models at Micro-Level in Vietnam? A Review","authors":"Nguyen Thi Hai Ninh, Nguyen Phuong Le, Do Kim Chung","doi":"10.12944/cwe.18.2.05","DOIUrl":"https://doi.org/10.12944/cwe.18.2.05","url":null,"abstract":"Vietnam's agricultural sector has achieved remarkable progress in recent years, ensuring both food security and export turnover for the country. However, the current focus on productivity and output alone is wasteful and detrimental to the environment. To address this, a shift from linear to circular agriculture is advocated, encompassing not only production but also consumption. While circular economy (CE) in agriculture is a new concept in Vietnam, various stakeholders at the micro-level, such as farmers, cooperatives, and enterprises, have been practicing circular agriculture for some time. Nevertheless, most of these models have emerged spontaneously without cohesive development across regions. Although the Vietnamese government have introduced policies promoting green production and CE, they have provided little guidance on promoting circular agricultural models at the micro-level. This paper presents a concise overview of CE in agriculture, synthesizes typical micro-level models of CE in Vietnam, and proposes policy recommendations to enhance existing circular agriculture models, including raising awareness among stakeholders about circular agriculture, encouraging investment in circular agriculture, enhancing the capacity of agricultural producers in recycling and reusing by-products, and establishing an appropriate legal framework.","PeriodicalId":10878,"journal":{"name":"Current World Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135989234","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

An Investigation on Physico- Chemical Parameters of Ground Water Near Mining Areas of Kadapa District, A. P, India. 印度Kadapa地区矿区附近地下水理化参数研究。

Current World Environment Pub Date : 2023-08-31 DOI: 10.12944/cwe.18.2.31

S. Mohammad Farooq, S. Sumithra, M. Maddaka, C. Sireesha

引用次数: 0

Identification of Sources Causing Air Pollution in Indian Cities Using Hierarchical Agglomerative Cluster Analysis 用层次聚类分析识别印度城市空气污染源

Current World Environment Pub Date : 2023-08-31 DOI: 10.12944/cwe.18.2.13

Nannaparaju Vasudha, Polisetty Venkateswara Rao

{"title":"Identification of Sources Causing Air Pollution in Indian Cities Using Hierarchical Agglomerative Cluster Analysis","authors":"Nannaparaju Vasudha, Polisetty Venkateswara Rao","doi":"10.12944/cwe.18.2.13","DOIUrl":"https://doi.org/10.12944/cwe.18.2.13","url":null,"abstract":"The distressing levels of air pollution in India is becoming health hazard to the inhabitants. It's important to note that due to the nation's continued urbanisation and its heavy reliance on coal for electricity generation, air pollution is expected to get worse in some areas of India over the next few decades. Present study aims to address the issue by identifying the sources causing air pollution using Hierarchical Agglomerative Cluster Analysis [HACA]. Two years daily data (2018 and 2019), downloaded from publicly available source Kaggle.com of sixteen selected air pollution monitoring stations was used for the study. The stations were selected based upon diversified environmental conditions and local sources. HACA was successful in grouping the monitoring stations into four clusters based on their average Air Quality Index (AQI) level. These four clusters are named as Low Pollution, Moderate Pollution, High Pollution and Very High Pollution Region [LPR, MPR, HPR and VHPR] with average AQI 96; 135; 173 and 227 respectively. Discriminant Analysis (DA) confirmed the resulting clusters with 100% accuracy. It was found that stations with similar environmental factors, regional sources, and pollution amounts were clustered together. Despite numerous actions taken by the authorities to reduce air pollution, it was noticed that topographical conditions play an essential role in the rise of pollution. This study helps to implement different strategies by the authorities’ concern based on local sources and topographical conditions.","PeriodicalId":10878,"journal":{"name":"Current World Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135988329","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

Magnetocaloric Effect in Half-Doped and Self-Doped Manganites: A Study to Green Refrigeration 半掺杂和自掺杂锰矿石的磁热效应:绿色制冷研究

Current World Environment Pub Date : 2023-08-31 DOI: 10.12944/cwe.18.2.15

Moumita Patra

引用次数: 0

Groundwater Flow Modeling of A Microwatershed using Visual Modflow Flex 基于Visual Modflow Flex的微流域地下水流动建模

Current World Environment Pub Date : 2023-08-31 DOI: 10.12944/cwe.18.2.24

Anusha Honnannanavar, Nagraj Patil, Vivek Patil

{"title":"Groundwater Flow Modeling of A Microwatershed using Visual Modflow Flex","authors":"Anusha Honnannanavar, Nagraj Patil, Vivek Patil","doi":"10.12944/cwe.18.2.24","DOIUrl":"https://doi.org/10.12944/cwe.18.2.24","url":null,"abstract":"The present study attempts to make a simulation of groundwater flow modeling in Chikkodi micro-watershed Belagavi (District), Karnataka. A two-layer conceptualization and the three-dimensional groundwater flow model are primarily underlain by weathered basalt and fractured basalt. The first layer weathered zone is 30m from the ground surface and the second layer fractured zone is 80m below the ground surface spread over 20 rows and 20 columns. The cell height is 674m and the cell width is 440m. The work described here built a groundwater flow model in the micro-watershed using Visual MODFLOW Flex. The steady-state groundwater flow model was then numerically projected in April 2020 using seventeen observation wells using the present stress levels. The model aims to quantify input and output stresses and pinpoint the basin's overstressed regions. The water budget analysis estimates that evapotranspiration loss makes up 56.54% of the basin's total groundwater recharge while overall groundwater leaks from river systems are 28.72%. The findings indicated that the southern section of the basin is undergoing severe aquifer stress as a result of river overflow and evapotranspiration. To improve groundwater levels, it is suggested that artificial recharge structures should be developed in and near Chikkodi village at appropriate sites. The trial-and-error approach was used to assess the sensitivity of the calibrated model, and it was discovered that the model is extremely sensitive to changes in hydraulic conductivity and recharge levels. Model performance is excellent, with R2, RMSE, and NRMSE values of 0.97, 5.34, and 13.23% of the assessing criteria.","PeriodicalId":10878,"journal":{"name":"Current World Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135988956","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

Erosivity Factor of the Revised Universal Soil Loss Equation (RUSLE) - A Systematized Review 修订的通用土壤流失方程(RUSLE)的侵蚀因子——系统综述

Current World Environment Pub Date : 2023-08-31 DOI: 10.12944/cwe.18.2.02

Shaheemath Suhara K K, Anu Varughese, Anjaly C Sunny, Anjitha Krishna P R

{"title":"Erosivity Factor of the Revised Universal Soil Loss Equation (RUSLE) - A Systematized Review","authors":"Shaheemath Suhara K K, Anu Varughese, Anjaly C Sunny, Anjitha Krishna P R","doi":"10.12944/cwe.18.2.02","DOIUrl":"https://doi.org/10.12944/cwe.18.2.02","url":null,"abstract":"The Revised Universal Soil Loss Equation (RUSLE) is a globally accepted erosion model which has gained good acceptability. Among the five influences of the RUSLE method of soil erosion estimation, the erosivity factor (R) represents rainfall event’s ability to produce erosion. It is mainly affected by rainfall intensity and kinetic energy of the rain. The erosion index represented by EI30 is the most common R-factor estimation method. Due to the non-availability of rainfall intensity data in many watersheds, researchers have developed methods for erosivity estimation using rainfall depth. The Modified Fournier Index method has gained popularity. Recently, different models using machine learning techniques and ANN are also being set up to establish the R-factor for soil loss estimation. These models can estimate the R-factor quickly and more accurately. They can even predict the R-factor for the future to predict soil loss and plan conservation measures accordingly. An attempt has been made here to review different methodologies proposed by scientists across the globe for arriving at the R-factor for soil loss estimation using RUSLE model.","PeriodicalId":10878,"journal":{"name":"Current World Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135989228","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