Background & Aims of the Study: In this research, Long-Term Hydrologic Impact Assessment model is selected for simulation of runoff and NPS pollution. The aim of this study is modeling of non-point source pollution by L-THIA model in Zayandehrood watershed in 2015. Materials & Methods: In this study, analytical survey and investigation of references in the context of libr...

In Nigeria irrigated agriculture is an important tool for economic growth, food security, and poverty reduction during dry periods of rain-fed agriculture. The concentration and composition of dissolved constituents in water determines its quality for irrigation use. Water quality studies strongly suggest that agriculture is a leading source of water quality problems, due to pesticides and othe...

The present study was conducted to compare precision and traditional agriculture by budgeting technique. Its statistical population consists of 210 experts in agricultural jihad organization of Qom province. The validity of Questionnaire as research tool ware confirmed by professors while its reliability was corroborated by Cranach’s alpha to 0.78-0.94 intervals. According to the findings, ther...

heavy metals in high concentrations in soils are potential health risk for humans, animals, and plants. soil samples were collected in five replicates from 20 points with four land use including: roads, refineries, residential area (sadra town), and farmland. heavy metals were determined using flame atomic absorption (analyticjena), while dtpa was chosen as trace elements extractor. in this stu...

The scientific research literature is reviewed (i) for evidence of how much reduction in nonpoint source pollution can be achieved by installing buffers on crop land, (ii) to summarize important factors that can affect this response, and (iii) to identify remaining major information gaps that limit our ability to make probable estimates. This review is intended to clarify the current scientific...

This paper explores the relationships between perceptions, behaviors and awareness regarding four environmental conditions in South Africa: water pollution, land degradation, air pollution and littering. Data from the 2004 General Household Survey are used. First, the extent to which these perceptions, behaviors and levels of awareness correspond to those found in other parts of the world is as...