The Impact of the Changes in Climate, Land Use and Direct Human Activity on the Discharge in Qingshui River Basin, China

Zhang, Mengxue; Stodolak, Radosław; Xia, Jianjun

doi:10.3390/w13213147

Cited by 4 publications

(2 citation statements)

References 39 publications

(49 reference statements)

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“…As human activities persist in disturbing land use and cover, the impact of land use change on the depth of runoff is likewise increasing [6] . The impact of changes in land use on the depth of runoff has become a critical issue in the study of global environmental change [7] .…”

Section: Introductionmentioning

confidence: 99%

Effects of land use change on runoff depth in the Songnen Plain, China

Lu,

Zhang,

et al. 2024

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Climate change and human activities both have a considerable impact on runoff depth, which are important parts of a changing ecosystem. Nevertheless, the main focus of hydrological response research has been on investigating the impact of climate change on the depth of runoff. In contrast, there has been limited emphasis on comprehending the precise mechanisms through which changes in land use, in relation to human activities, influence runoff depth. This paper utilized the MIKE SHE/MIKE 11 model to simulate the runoff depth process in the study area from 1980 to 2020. It estimated the influence of climate change and land use change on runoff depth using the runoff reduction method. Additionally, it quantified the impact of different land use changes on runoff depth by employing the spatio-temporal geographically weighted regression model. The study demonstrates that the MIKE SHE/MIKE 11 model is capable of accurately reproducing the runoff depth of the Songnen Plain. Both the R and NSE values for both the base and validation periods exceed 0.75. Moreover, from a geographical standpoint, climate change has a greater influence on runoff depth than human activity. Nevertheless, the impact of human activity is more evident in small, specific areas. As human activities intensify, their impact on runoff depth also increases, with the average contribution rising from 20% to over 30%. Changes in various land types within the watershed can be used to observe the influence of human activities on runoff depth. More precisely, a 10% rise in the rate of change of construction land, dry land, and unoccupied land results in an increase in runoff depth of 6.21 mm, 2.45 mm, and 1.14 mm, respectively. Conversely, a 10% rise in the rate of alteration of marsh, paddy, and forest land leads to a reduction in the depth of runoff by 9.49 mm, 6.46 mm, and 3.07 mm, respectively. This research can contribute to improving the efficiency of water and land resource utilization and optimizing land resource governance.

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Section: Introductionmentioning

confidence: 99%

Effects of land use change on runoff depth in the Songnen Plain, China

Lu,

Zhang,

et al. 2024

Preprint

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“…Spatial management has a strong in uence on the condition of groundwaters. A signi cant degree of sealing the land surface in many areas (due to dense development or lack of biologically active areas) prevents rainwater from penetrating deep into the soil, so that surface runoff becomes dominant (Hu et al 2020;Zhang et al 2021). In such situations, the effects of drought and water de cit are ampli ed.…”

Section: Introductionmentioning

confidence: 99%

Groundwater drought risk assessment model as a tool to support sustainable water resources management

Kubicz

Karczewski

2023

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As a result of increasing water deficits, low nutritional safety, and environmental degradation, the need to implement sustainable water usage and improve current water management practices became a priority. The changes in the hydroclimatic regimen towards more intense yet less frequent rainfall that have been observed in recent years increase the risk of drought. This leads to the need to mitigate this risk and to reduce the effects of repeated, consecutive periods of water shortage. The objective of article was to present a method for assessing the risk of occurrence of groundwater drought based on the distributions of extreme values of groundwater levels. This goal was achieved, which was shown on the examples of selected observation points of the groundwater level in the catchment of the Odra River. Based on the obtained results, it was demonstrated that the application of the distributions of extreme groundwater level values to assess the risk of occurrence of groundwater drought is an effective tool that supports sustainable water management. It offers the possibility to assess the risk of groundwater drought, which usually leads to water deficits in the affected areas, in a fast and simple way. The risk calculated in this way may be used to classify the areas in terms of the level of risk of the occurrence of groundwater drought. The method presented in this paper may also be used to assess the influence of various factors, including the methods of catchment management, climate changes, on mitigating the risk of occurrence of groundwater droughts.

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Probabilistic quantification in the analysis of groundwater drought in the Odra River Basin

Kubicz

Karczewski

2023

Preprint

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As a result of increasing water deficits, low nutritional safety, and environmental degradation, the need to implement sustainable water usage and improve current water management practices became a priority. The changes in the hydroclimatic regimen towards more intense yet less frequent rainfall that have been observed in recent years increase the risk of drought. This leads to the need to mitigate this risk and to reduce the effects of repeated, consecutive periods of water shortage. The main aim of the study is to present the method of quantification of uncertain events, such as extreme groundwater levels. Following the probabilistic theory of extreme values, the authors verified the hypotheses: both the scale and nature of groundwater risk significantly change in the studied period and over the past 40 years, a rise in the groundwater drought risk in the Odra River Basin has been observed. The application of probabilistic method allowed to draw interesting conclusions groundwater drought risk within the last 10 years has been very high, the lowest risk occurred between 1980 and 1989. Too few points make it impossible to draw conclusions about long-term trends. Meteorological study in those areas indicate a relation between groundwater levels and climate change in recent years, represented by various factors such as precipitation, temperature, humidity. The risk calculated in this way may be used to classify the areas in terms of the level of risk of the occurrence of groundwater drought.

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The Impact of the Changes in Climate, Land Use and Direct Human Activity on the Discharge in Qingshui River Basin, China

Cited by 4 publications

References 39 publications

Effects of land use change on runoff depth in the Songnen Plain, China

Effects of land use change on runoff depth in the Songnen Plain, China

Groundwater drought risk assessment model as a tool to support sustainable water resources management

Probabilistic quantification in the analysis of groundwater drought in the Odra River Basin

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