Hydrologic response to large-scale land use and cover changes in the Upper Paraná River Basin between 1985 and 2015

Rafee, Sameh Adib Abou; Freitas, Edmílson Dias de; Martins, Jorge Alberto; Machado, Camila Moreira; Uvo, Cíntia Bertacchi

doi:10.1007/s10113-021-01827-6

Cited by 6 publications

(3 citation statements)

References 67 publications

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“…The positive trend is associated with increased precipitation, as 40% of the region is dominated by increasing precipitation trends. The nonstationarity in GPP is high for this region as well, with a greening signal dominating 72% of the region due to the land use change and expansion of crop production 34,35 . The Horn of Africa (region 10) exhibits consistently high nonstationarity across all variables, which is dominated by its strong internal climate variability 36 .…”

Section: Hotspots Of Water Cycle Nonstationaritymentioning

confidence: 96%

Nonstationarity in the global terrestrial water cycle and its interlinkages in the Anthropocene

Nie

Kumar²,

Getirana

et al. 2023

Preprint

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Warming climate and anthropogenic disturbances alter the global freshwater cycle, causing changes and fluctuations beyond what can be attributed to natural variability alone. A comprehensive understanding of nonstationarity in water cycle components, where trends and fluctuations deviate from the assumption of a stable statistical pattern, remains elusive. Using a remote sensing-informed terrestrial reanalysis, we provide an assessment of nonstationarity in global water cycle components and their interconnections from 2003 to 2020 in terms of trends, seasonal shifts, and changes in extremes. We show that one-third of the global land exhibits strong nonstationarity in terrestrial water storage, with long-term trends contributing the most (47.3%), followed by seasonal shifts (36.2%) and changes in extremes (16.5%). The spatial pattern of nonstationarity in other water cycle variables confirm the intricate interplay of climate variations and human management processes. Our results provide a global quantification of the pervasiveness of nonstationarity in the terrestrial water cycle and highlight the need for adaptive strategies and management approaches to navigate the challenges posed by nonstationary conditions.

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Section: Hotspots Of Water Cycle Nonstationaritymentioning

confidence: 96%

Nonstationarity in the global terrestrial water cycle and its interlinkages in the Anthropocene

Nie

Kumar²,

Getirana

et al. 2023

Preprint

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“…However, this does not accurately reflect the impact of land-use transformation on hydrological extremes. For example, grassland can undergo conversion to impervious ground, or alternatively, it may be converted to highly permeable forest land (Abou Rafee et al, 2021). Consequently, in the present study, we introduced the concept of the net swap of land use to analyze the responses of hydrological extremes to land-use change based on a land-use transfer matrix (Pontius et al, 2004).…”

Section: Land-use Changementioning

confidence: 99%

Hedging effect alleviates the impact of land use on mainstream hydrological regimes: Evidence from Jinsha River, China

Gao,

Liu,

et al. 2023

J. Geogr. Sci.

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Global extreme hydrological events pose considerable challenges to the sustainable development of human society and river ecology. Land use/cover change (LUCC) is a visible manifestation of human activity and has caused substantial alterations in extreme hydrological regimes across rivers worldwide. The Jinsha River lies upstream of the Yangtze River and its hydrological variability has had profound socioeconomic and environmental effects. In this study, we developed Hydrological Simulation Program-FORTRAN (HSPF) and land-use simulation models of the entire watershed to simulate the effects of LUCC on hydrological extremes and quantify the inter-relationships among them. The main land-use changes between 1995 and 2015 were those associated with cropland, forest land, and grassland. Between 2015 and 2030, it is estimated that the coverage of forest land, grassland, construction land, and unused land will increase by 0.64%, 0.18%, 69.38%, and 45.08%, respectively, whereas that of cropland, water bodies, and snow-and ice-covered areas will decline by 8.02%, 2.63%, and 0.89%, respectively. LUCC has had irregular effects on different hydrological regimes and has most severely altered stream flows. The responses of hydrological extremes to historical land-use change were characterized by spatial variation. Extreme low flows increased by 0.54%-0.59% whereas extreme high flows increased by 0%-0.08% at the lowest outlet. Responses to future land-use change will be amplified by a 0.72%-0.90% reduction in extreme low flows and a 0.08%-0.12% increase in extreme high 2012 Journal of Geographical Sciences flows. The hedging effect caused by irregular changes in tributary stream flow was found to alleviate the observed flow in mainstream rivers caused by land-use change. The extreme hydrological regimes were affected mainly by the net swap area transferred from ice and snow area to forest (NSAIF) and thereafter to cultivated land (NSAIC). Extreme low flows were found to be positively correlated with NSAIF and NSAIC, whereas extreme high flows were positively correlated with NSAIC and negatively correlated with NSAIF.

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“…Several studies quantitatively demonstrated a negative relationship between wet weather conditions and river water quality (Ferguson et al 1996;Byamukama et al 2000;Kistemann et al 2002;Wu et al 2012;Tornevi et al 2014;Fan and Shibata 2015;Lebek et al 2019;Abou Rafee et al 2021). Nobre et al (2020) observed that water quality impairment emerging from land use changes occurring adjacent to lakes in northeast Brazil was amplified by rainfall Communicated by Tony Weir events.…”

Section: Introductionmentioning

confidence: 99%

Rainfall and land use impacts on water quality and communities in the Waimanu River Catchment in the South Pacific: the case of Viti Levu, Fiji

2022

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A community-based assessment along with a water quality framework was used to explore the Waimanu River water quality and to determine the impacts of the water quality on the communities which rely on the river for livelihood, sustenance, and recreation. Since both climatic and non-climatic factors affect the river system, the study used rainfall variability as well as land use assessments in addition to the community-based assessment to assess the effects of changing environmental factors on the river water quality. It was found that frequent rainfall intensified the runoff into the Waimanu River of contaminants arising from unsustainable land use practices in the Waimanu Catchment including agriculture, gravel extraction, logging, deforestation, and improper waste management. These led to physicochemical and microbial pollution in the river which augmented the vulnerability of the riverine communities to water pollution by hampering their food, water, income, and health securities. The river water quality is expected to further deteriorate as future climate change projections predict an intensification of annual rainfall events, thereby increasing river water contamination and risks to aquatic life and human life. Non-climatic factors that endanger water quality could be controlled by implementing better upstream land and waste management strategies on a catchment scale to minimize the adverse impacts of declining water quality on downstream communities. Methodologies employed in this study to monitor and maintain river water quality are applicable on a global scale to promote the health and security of riverine communities.

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Hydrologic response to large-scale land use and cover changes in the Upper Paraná River Basin between 1985 and 2015

Cited by 6 publications

References 67 publications

Nonstationarity in the global terrestrial water cycle and its interlinkages in the Anthropocene

Nonstationarity in the global terrestrial water cycle and its interlinkages in the Anthropocene

Hedging effect alleviates the impact of land use on mainstream hydrological regimes: Evidence from Jinsha River, China

Rainfall and land use impacts on water quality and communities in the Waimanu River Catchment in the South Pacific: the case of Viti Levu, Fiji

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