Nitrogen sources, processes, and associated impacts of climate and land-use changes in a coastal China watershed: Insights from the INCA-N model

Ervinia, Ayu; Huang, Jinliang; Zhang, Zhenyu

doi:10.1016/j.marpolbul.2020.111502

Cited by 14 publications

(3 citation statements)

References 56 publications

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“…Many scholars worldwide have researched this area. For example, Ervinia [16] assessed the associated impacts of climate and land-use changes in China s coastal watershed using the Integrated Nitrogen CAtchments (INCA-N) model. Similarly, Tang et al [17] evaluated land-use changes by linking ecosystem services values (ESVs) between the estuary and non-estuary zones of the coastal watershed in south-eastern China.…”

Section: Introductionmentioning

confidence: 99%

Land-Use and Land-Cover (LULC) Change Detection and the Implications for Coastal Water Resource Management in the Wami–Ruvu Basin, Tanzania

et al. 2021

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Evaluation of river basins requires land-use and land-cover (LULC) change detection to determine hydrological and ecological conditions for sustainable use of their resources. This study assessed LULC changes over 28 years (1990–2018) in the Wami–Ruvu Basin, located in Tanzania, Africa. Six pairs of images acquired using Landsat 5 TM and 8 OLI sensors in 1990 and 2018, respectively, were mosaicked into a single composite image of the basin. A supervised classification using the Neural Network classifier and training data was used to create LULC maps for 1990 and 2018, and targeted the following eight classes of agriculture, forest, grassland, bushland, built-up, bare soil, water, and wetland. The results show that over the past three decades, water and wetland areas have decreased by 0.3%, forest areas by 15.4%, and grassland by 6.7%, while agricultural, bushland, bare soil, and the built-up areas have increased by 11.6%, 8.2%, 1.6%, and 0.8%, respectively. LULC transformations were assessed with water discharge, precipitation, and temperature, and the population from 1990 to 2018. The results revealed decreases in precipitation, water discharge by 4130 m3, temperature rise by 1 °C, and an increase in population from 5.4 to 10 million. For proper management of water-resources, we propose three strategies for water-use efficiency-techniques, a review legal frameworks, and time-based LULC monitoring. This study provides a reference for water resources sustainability for other countries with basins threatened by LULC changes.

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Section: Introductionmentioning

confidence: 99%

Land-Use and Land-Cover (LULC) Change Detection and the Implications for Coastal Water Resource Management in the Wami–Ruvu Basin, Tanzania

et al. 2021

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“…between the simulated and monitoring results were calculated (Ervinia et al, 2020;Wu et al, 2017). The river flow data was obtained from hydrological stations at the outlet of the sub-watershed.…”

Section: Climate Change Scenario and Modelling Evaluationmentioning

confidence: 99%

Exploring dynamics of riverine phosphorus exports under future climate change using a process-based catchment model

Tong

Chen

Wen

et al. 2022

Journal of Hydrology

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“…Climate and land-use change critically impact water resources by directly affecting the hydrologic processes (Ervinia et al, 2019;McDonough et al, 2020). Rainfall and temperature can influence the streamflow directly (Dosdogru et al, 2020) and the physical process of nutrients, such as denitrification, mineralization, and absorption of plants (Hartmann et al, 2014;Gao et al, 2017;Ervinia et al, 2020). Land use can alter hydrological cycles, nonpoint source (NPS) pollution induced by fertilizer applications, and the retention capability of sediment and nutrient loading (Ye et al, 2020), resulting in water pollution (Berka et al, 2001), and urbanization will amplify the flow peak, decrease the low flow and variability of streamflow through decreasing the infiltration and increasing the surface runoff.…”

Section: Introductionmentioning

confidence: 99%

Exploring and Predicting the Individual, Combined, and Synergistic Impact of Land-Use Change and Climate Change on Streamflow, Sediment, and Total Phosphorus Loads

Xie

Chen

Yun-Feng

et al. 2021

Front. Environ. Sci.

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The present study predicts and assesses the individual, combined, and synergistic effect of land-use change and climate change on streamflow, sediment, and total phosphorus (TP) loads under the present and future scenarios by using the Soil and Water Assessment Tool (SWAT). To predict the impacts of climate and land-use change on streamflow, sediment, and TP loads, there are 46 scenarios composed of historical climate, baseline period climate, eight climate models of Coupled Model Intercomparison Project phase 5 (CMIP5) of two representative emission pathways (RCP4.5 and RCP8.5), after downscaled and bias-corrected, two observed land-use maps (LULC 1995, LULC 2015) and the projected two future land-use maps (LU2055 and LU 2075) with the help of CA-Markov model to be fed into SWAT. The central tendency of streamflow, sediment, and TP loads under future scenarios is represented using the annual average. The intra-/inter-annual variation of streamflow, sediment, and TP loads simulated by SWAT is also analyzed using the coefficient of variation. The results show that future land-use change has a negligible impact on annual streamflow, sediment, TP loads, and intra-annual and inter-annual variation. Climate change is likely to amplify the annual streamflow and sediment and reduce the annual TP loads, which is also expected to reduce its inter-/intra-annual variation of TP loads compared with the baseline period (2000–2019). The combined impact of land-use and climate change on streamflow, sediment, and TP loads is greater than the sum of individual impacts for climate change and land-use change, especially for TP loads. Moreover, the synergistic impact caused by the interaction of climate and land use varies with variables and is more significant for TP loads. Thus, it is necessary to consider the combined climate and land-use change scenarios in future climate change studies due to the non-negligible synergistic impact, especially for TP loads. This research rare integrates the individual/combined/synergistic impact of land-use and climate change on streamflow, sediment, and TP loads and will help to understand the interaction between climate and land-use and take effective climate change mitigation policy and land-use management policy to mitigate the non-point source pollution in the future.

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Nitrogen sources, processes, and associated impacts of climate and land-use changes in a coastal China watershed: Insights from the INCA-N model

Cited by 14 publications

References 56 publications

Land-Use and Land-Cover (LULC) Change Detection and the Implications for Coastal Water Resource Management in the Wami–Ruvu Basin, Tanzania

Land-Use and Land-Cover (LULC) Change Detection and the Implications for Coastal Water Resource Management in the Wami–Ruvu Basin, Tanzania

Exploring dynamics of riverine phosphorus exports under future climate change using a process-based catchment model

Exploring and Predicting the Individual, Combined, and Synergistic Impact of Land-Use Change and Climate Change on Streamflow, Sediment, and Total Phosphorus Loads

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