Influences of landscape pattern evolution on regional crop water requirements in regions of large-scale agricultural operations

Han, Yingjie; Wang, Jinglei; Li, Ping

doi:10.1016/j.jclepro.2021.129499

Cited by 12 publications

(1 citation statement)

References 89 publications

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“…The LMs were divided into three categories based on different levels: patch-level, class-level, and landscape-level metrics [39]. The LMs on a landscape level integrated all patch types or classes over the entire study region, and they were separated into four categories reflecting different types of characteristics of landscapes: edge area, shape, aggregation, and diversity metrics [49]. The main purpose of this study was to reveal the relationships between landscape patterns and representative hydrological indices in the subtropical monsoon climate zone.…”

Section: Lms Selectionmentioning

confidence: 99%

Relationships between Landscape Patterns and Hydrological Processes in the Subtropical Monsoon Climate Zone of Southeastern China

Wei

Dong

et al. 2023

Remote Sensing

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With rapid economic development, extensive human activity has changed landscape patterns (LPs) dramatically, which has further influenced hydrological processes. However, the effects of LPs changes on hydrological processes, especially for the streamflow–sediment relationship in the subtropical monsoon climate zone, have not been reported. In our study, 10 watersheds with different sizes in the subtropical monsoon climate zone of southeastern China were chosen as the study area, and the effect of the 14 most commonly used landscape metrics (LMs) on 4 typical hydrological indices (water yields (WY), the runoff coefficient (RC), the soil erosion modulus (SEM), and the suspended sediment concentration (SSC)) were analyzed based on land use maps and hydrological data from 1990 to 2019. The results reveal that the LP characteristics within the study area have changed significantly. The number of patches and landscape shape indices were significantly positively correlated with watershed size (p < 0.01). For most watersheds, the largest patch index was negatively correlated with WY, RC, and SEM, and the perimeter area fractal dimension was positively correlated with WY, RC, SEM, and SSC. The effects of several LMs on the hydrological indices had scale effects. WY/RC and the interspersion and juxtaposition index were negatively correlated in most larger watersheds but were positively correlated in most smaller watersheds. Similar results were found for Shannon’s diversity/evenness index and SEM. In general, an increase in a small patch of landscape and in landscape diversity would increase WY, the fragmentation of LPs would result in more soil erosion, and LPs would affect the relationship between streamflow and sediment yield. As a result, a proper decrease in landscape fragmentation and physical connectivity in the subtropical monsoon climate zone of southeastern China would benefit soil erosion prevention. These results enhance the knowledge about the relationship between LPs and hydrological processes in the subtropical monsoon climate zone of southeastern China and benefit local water and soil conservation efforts.

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Section: Lms Selectionmentioning

confidence: 99%

Relationships between Landscape Patterns and Hydrological Processes in the Subtropical Monsoon Climate Zone of Southeastern China

Wei

Dong

et al. 2023

Remote Sensing

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Fate and distribution of microplastics in water and sediment collected from Samiran ditch irrigation

Garfansa,

Zalizar,

Husen

et al. 2024

Environmental Quality Mgmt

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Ditch irrigation is an important route that potentially discharges microplastics (MPs) into environment. Samiran ditch irrigation is the largest urban irrigation in Pamekasan City, Indonesia. Water and sediment samples were collected in Samiran ditch irrigation to identify MPs including their color, shape, size, and number of MPs. From all sampling locations, MPs were found in both the water and sediments of the Samiran ditch irrigation with sizes ranging from 0.1 mm to 2.9 mm. The abundance of MPs in water ranged from 0.5 to 0.9 items/L, while MPs in sediments 0.14 to 0.23 items/g with colors of black, blue, and yellow. The polymer types of polyethyleneimine (PEI) and polypropylene (PP) were found both in surface water and sediment sample. MPs such as fragments, filament, fiber, and pellet were found in Samiran ditch irrigation with fiber was dominant found in the surface water (40%) and fragment was dominant in sediment (25%).

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Spatiotemporal dynamics of water supply–demand patterns under large-scale paddy expansion: Implications for regional sustainable water resource management

Zhang

Sun

Zhang

et al. 2023

Agricultural Water Management

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Influences of landscape pattern evolution on regional crop water requirements in regions of large-scale agricultural operations

Cited by 12 publications

References 89 publications

Relationships between Landscape Patterns and Hydrological Processes in the Subtropical Monsoon Climate Zone of Southeastern China

Relationships between Landscape Patterns and Hydrological Processes in the Subtropical Monsoon Climate Zone of Southeastern China

Fate and distribution of microplastics in water and sediment collected from Samiran ditch irrigation

Spatiotemporal dynamics of water supply–demand patterns under large-scale paddy expansion: Implications for regional sustainable water resource management

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