Optimization of Land Use Pattern Reduces Surface Runoff and Sediment Loss in a Hilly-Gully Watershed at the Loess Plateau, China

Han, Yuxiao; Niu, Jianzhi; Xin, Zhouping; Zhang, Wei; Tie-lin, Zhang; Xilin, Wang; Zhang, Yousong

doi:10.5424/fs/2016251-08016

Cited by 5 publications

(2 citation statements)

References 28 publications

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“…Streamflow can be effectively inhibited through the adjustment of land type and the optimization of its spatial distribution. For instance, converting the sloping cultivated land to terraces, or converting orchards to forests can substantially decrease streamflow, especially for hilly watershed areas [70]. In addition, the parameters impacting climate change not only refer to P and PET but also include weed speed, relative humidity, and sunshine hours, therefore it would be better if the contribution of all the climate factors to streamflow change could be assessed in the future.…”

Section: Uncertainty Of Quantitative Assessment and Future Researchmentioning

confidence: 99%

The Impacts of Climate Variation and Land Use Changes on Streamflow in the Yihe River, China

Qin

Ding

et al. 2019

Water

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Climate variation and land use changes have been widely recognized as two major factors that impact hydrological processes. However, it is difficult to distinguish their contributions to changes in streamflow. Quantifying their contributions to alteration of streamflow is especially important for the sustainable management of water resources. In this study, the changes in streamflow for the period of 1960–2008 at two stations (Dongwan and Luhun) were analyzed in the Yihe watershed in China based on hydrological data series and climate parameters. Using a non-parametric Mann–Kendall (MK) and Pettitt’s test, as well as Budyko analysis, we first examined the trends of hydroclimatic variables and the breakpoint of annual streamflow over the past 50 years. Subsequently, we evaluated the contributions of annual precipitation (P), potential evapotranspiration (PET), and land use condition (represented by w), respectively, to streamflow variation. We observed a decreasing trend for P, as well as increasing trends for PET and w. Annual streamflow showed a significant downward trend with an abrupt change occurring in 1985 during the period of 1960–2008. Accordingly, we divided the studied period into two sub-periods: period I (1960–1985) and period II (1986–2008). The sensitivity of the streamflow to the different environmental factors concerned in this study differed. Streamflow was more sensitive to P than to PET and w. The decrease in P was the greatest contributor to the decline in streamflow, which accounted for 50.01% for Dongwan and 55.36% for Luhun, followed by PET, which accounted for 24.25% for Dongwan and 24.45% for Luhun, and land use change was responsible for 25.25% for Dongwan and 20.19% for Luhun. Although land use change plays a smaller role in streamflow reduction, land use optimization and adjustment still have great significance for future water resource management, since climate variation is difficult to control; however, the pattern optimization of land use can be achieved subjectively.

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Section: Uncertainty Of Quantitative Assessment and Future Researchmentioning

confidence: 99%

The Impacts of Climate Variation and Land Use Changes on Streamflow in the Yihe River, China

Qin

Ding

et al. 2019

Water

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“…In general, afforestation will reduce the runoff yield, while deforestation, urbanization and overgrazing will increase the runoff yield; furthermore, the effect of agricultural activities varies with tillage practices [54][55][56][57][58][59]. Moreover, relevant studies indicated that the land-use structure and spatial layout (e.g., land-use distribution [60,61], land-use pattern and landscape features [62,63]) also have a deep impact on the runoff yield, runoff patterns and the runoff processes. These studies suggest that the land-use type is closely related to the runoff processes, which may be the key factor to determine the runoff yield.…”

Section: Introductionmentioning

confidence: 99%

Land-Use-Based Runoff Yield Method to Modify Hydrological Model for Flood Management: A Case in the Basin of Simple Underlying Surface

Yang

et al. 2022

Sustainability

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The study of runoff under the influence of human activities is a research hot spot in the field of water science. Land-use change is one of the main forms of human activities and it is also the major driver of changes to the runoff process. As for the relationship between land use and the runoff process, runoff yield theories pointed out that the runoff yield capacity is spatially heterogeneous. The present work hypothesizes that the distribution of the runoff yield can be divided by land use, which is, areas with the same land-use type are similar in runoff yield, while areas of different land uses are significantly different. To prove it, we proposed a land-use-based framework for runoff yield calculations based on a conceptual rainfall–runoff model, the Xin’anjiang (XAJ) model. Based on the framework, the modified land-use-based Xin’anjiang (L-XAJ) model was constructed by replacing the yielding area (f/F) in the water storage capacity curve of the XAJ model with the area ratio of different land-use types (L/F; L is the area of specific land-use types, F is the whole basin area). The L-XAJ model was then applied to the typical cultivated–urban binary land-use-type basin (Taipingchi basin) to evaluate its performance. Results showed great success of the L-XAJ model, which demonstrated the area ratio of different land-use types can represent the corresponding yielding area in the XAJ model. The L-XAJ model enhanced the physical meaning of the runoff generation in the XAJ model and was expected to be used in the sustainable development of basin water resources.

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Soil Water Analysis Tools (SWAT) hydrology modelling as a basis for spatial planning: a case study in Cimandiri Watershed, West Java Province

Ridwansyah

Yulianti

Wibowo

2019

IOP Conf. Ser.: Earth Environ. Sci.

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Appropriate spatial planning can be analysed by looking at its impact on water resources on a watershed scale through a hydrological modelling approach. The objective of this study was to examine the effect of land-use change and the spatial plan of the region in the Cimandiri watershed using Soil Water Analysis Tools (SWAT) hydrological modelling. The Cimandiri watershed (1,830 km2) is situated in West Java Province, Indonesia. This watershed has a strategic position because of its proximity to the Capital City of Jakarta. This study highlights the importance of hydrological response considerations in spatial planning. From 1994 to 2016, there has been a reduction of forest land cover (157.8 ha), paddy fields (688.5 ha) and plantations (216.4 ha). This land-use change affects the hydrological conditions of the Cimandiri Watershed. The results indicated that there was an increase in the surface flow of 8.7 mm/year (186.6 to 195.3 mm/year), from 1994 to 2016 while baseflow decreased from 781.64 to 777.7 mm/year. The verification models were in satisfactory categories (R2 0.62 and NSE 0.51). Therefore, this indicated hydrological conditions in 1994 were relatively better than in 2016. The simulation result on the spatial plan shows the surface runoff, and the base rate was 284.9 mm/year and 684.7 mm/year, respectively. Interestingly, land use proportion based on urban spatial planning generated relatively higher surface runoff and sediment yield compared to existing land use. Hence there should be a review of the existing urban spatial planning of Sukabumi Regency that was resulting in the worst hydrological response based on SWAT model.

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Optimization of Land Use Pattern Reduces Surface Runoff and Sediment Loss in a Hilly-Gully Watershed at the Loess Plateau, China

Cited by 5 publications

References 28 publications

The Impacts of Climate Variation and Land Use Changes on Streamflow in the Yihe River, China

The Impacts of Climate Variation and Land Use Changes on Streamflow in the Yihe River, China

Land-Use-Based Runoff Yield Method to Modify Hydrological Model for Flood Management: A Case in the Basin of Simple Underlying Surface

Soil Water Analysis Tools (SWAT) hydrology modelling as a basis for spatial planning: a case study in Cimandiri Watershed, West Java Province

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