Assessing land use change impact on stream discharge and stream water quality in an agricultural watershed

Ni, Xiaojing; Parajuli, Prem B.; Ouyang, Ying; Dash, Padmanava; Siegert, Courtney M.

doi:10.1016/j.catena.2020.105055

Cited by 59 publications

(25 citation statements)

References 37 publications

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“…The use of toxic chemicals, such as pesticides and inorganic fertilizers, can trigger changes in quality standards in waters, both groundwater and surface water (Wuana & Okieimen, 2011). Changes in land use and land cover will significantly affect water, especially the quality (Ni et al, 2021). Human activities and natural events can reduce the quality of surface and groundwater (Carpenter et al, 1998;Kazi et al, 2009;Şener et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Changes in land use and land cover will significantly affect water quality, which will decrease water quality (Ni et al, 2021). Human activities and natural events can reduce the quality of surface water and groundwater (Carpenter et al, 1998;Kazi et al, 2009;Şener et al, 2017), so it is necessary to monitor water quality to maintain groundwater quality conditions for community needs.…”

Section: Introductionmentioning

confidence: 99%

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Water Quality Index of Well Water in the Converted Agricultural Land

Prabowo

Bambang

Sudarno

2021

JPII

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The groundwater condition at converted agricultural land has decreased water quality because of previous agricultural processes, so the water quality index is essential to know. This study aims to measure the groundwater quality index in residential wells on the converted agricultural land, determine the dominant parameters that form the Water Quality Index (WQI) in dug wells and drilled wells on the converted agricultural land, and determine the effect depth and age of wells on WQI. The research design was descriptive exploratory with WQI as the dependent variable and the depth and age of the well as the independent variable. With purposive sampling, 32 points of dug and drilled wells in different locations were chosen. Multiple linear regression was applied for data analysis. From the findings, it can be concluded that the minimum WQI value in dug well water is 76.9, and the average maximum WQI value in dug well water is 92.3. There are 8 points in dug well water with WQI in a good category or quality-2 category (71-90), and 15 dug well points have WQI in a very good quality category or quality-1 category (91-100). This value indicates that the dug well water quality in the research location is still classified as eligible for consumption. The dominant parameters that form WQI values in dug and drilled wells are manganese, cadmium, iron, with a value of -0.918 -0.886 -0.790. The depth and age of the well affect the water quality index. The depth of the well has a stronger effect on the water quality index than the age of the well.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Water Quality Index of Well Water in the Converted Agricultural Land

Prabowo

Bambang

Sudarno

2021

JPII

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“…This was primarily due to variations in crops and paddy fields runoff, N fertilization rates, and management strategies. Ni et al [62] published similar findings about SS, T-P, and T-N concentration increases in crop land as a result of improvements in crop management activities, including fertilization. Pollutant content in agricultural areas is a critical environmental concern due to the high risk of pollutants reaching nearby bodies of water by leaching or runoff [63].…”

Section: Land-use Change Impact On Whmentioning

confidence: 65%

Evaluation of Land-Use Changes Impact on Watershed Health Using Probabilistic Approaches

Lee

So-Young

Lee

et al. 2021

Water

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This study evaluated watershed health (WH) change using reference values for environmental changes at various times. Land use in 1985 was defined as the reference value under the most natural conditions, and the WH for the years 1995 to 2019 was calculated in comparison to 1985. The proposed method was used to assess the WH of 78 standard subbasins in South Korea’s Geum River Basin (GRB), where complex land-use change has occurred since 1995. For evaluating hydrology and water quality (WQ) health index, Soil and Water Assessment Tool (SWAT) and four land-use maps (1985, 1995, 2008, and 2019) were used to simulate the hydrology and WQ. A multivariate normal distribution (MND) from poor (0) to good (1) was used to assess WH based on SWAT modeling results. Based on the reference value, the WQ health from 1995 to 2019 changed to within 0.1, while the range of changes in the hydrology index was analyzed over 0.18. As a result of WH changes from 1985 to 2019, hydrological health deteriorated in high-density urbanized subbasins, while WQ health deteriorated in upland-cultivation-increased subbasins. This study provides useful information for recognizing potential WH issues related to long-term environmental changes.

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“…Catchment prioritisation is a strategy to support decision-makers to identify the most critical regions that demand intervention. Also, it is necessary to predict the impacts of possible land use changes, which can be done through software such as SWAT, already applied in other to study areas in the scope of land use changes (Ni et al, 2021). Yet, other multidisciplinary aspects must be considered in land-use changes, such as flood risk, drought, wildfires (Mishra et al, 2020).…”

Section: Interventionmentioning

confidence: 99%