Effects of rainfall intensity and slope on interception and precipitation partitioning by forest litter layer

Du, Jie; Niu, Jianzhi; Gao, Zhifeng; Chen, Xiongwen; Zhang, Linus; Li, Xiang; Doorn, Natalie S. van; Luo, Zidong; Zhu, Zhijun

doi:10.1016/j.catena.2018.09.036

Cited by 63 publications

(45 citation statements)

References 39 publications

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“…7), which reduced penetration resistance at the time of evaluation (Assis et al 2009). The lower soil moisture content in the treatments L and HR + L can be attributed to the interception of rainwater by the residues (Du et al 2019), causing a reduction in water infiltration.…”

Section: Retention Of Harvest Residues Related To Compactionmentioning

confidence: 94%

Retention of eucalyptus harvest residues reduces soil compaction caused by deep subsoiling

et al. 2021

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Eucalyptus harvesting, forwarding and soil tillage operations are among the main causes for compaction of forest soils, with potential impacts on productivity. This concern is especially important in areas with soils that are naturally compacted (fragipans and duripans). In these soils, tillage operations include the use of subsoilers that can reach depths of more than one meter and require heavy tractors that exert high pressure on the soil. One of the ways to try to minimize the effect of this compaction is by retaining harvest residues. The objective of this study was to evaluate the impacts of eucalyptus harvesting on soil physical attributes, as well as to determine the potential of different types of residue management to reduce compaction from the soil tillage operation. Two experiments were conducted in the same area with a Yellow Argisol. In the first experiment, compaction caused by mechanized harvesting with harvester + forwarder was evaluated. In the second experiment, different managements of harvest residues were examined as potential modifiers of soil compaction during tillage for new plantings. For this, three managements systems were tested: (1) retention of all harvest residues and litter from the previous rotation (HR + L), (2) retention of litter from the previous rotation (L), and (3) removal of harvest residues and litter from the previous rotation (WR). Before and after harvest, sampling was carried out in the planting rows and inter-rows, and after tillage, samples were collected in the traffic line of the subsoiler-tractor set. In both experiments, undisturbed soil samples were collected from the center of the 0–10, 10–20, 20–40, 40–60, and 60–100 cm layers to determine soil density and total porosity. In each period and site of evaluation, mechanical resistance to penetration up to the 60-cm depth was also determined. The harvesting operation increased soil density at 0–10 and 60–100 cm depths only in the inter-rows. Retention of harvest residues and litter (HR + L) after harvesting avoided increases in soil density and penetration resistance caused by machine traffic during tillage. The results indicate the importance of retaining harvest residues on forest soils for achieving sustainable utilization and for conserving soil quality.

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Section: Retention Of Harvest Residues Related To Compactionmentioning

confidence: 94%

Retention of eucalyptus harvest residues reduces soil compaction caused by deep subsoiling

et al. 2021

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“…They were halted when the dripping process of water intercepted by the mulch layer ended. The rainfall intensity was calibrated and adjusted before each rainfall 31 .…”

Section: Methodsmentioning

confidence: 99%

“…Using the water balance, the mulch interception was indirectly calculated. As the laboratory experiments were conducted inside a building without wind and sunlight, evaporation was neglected 31 .…”

Section: Methodsmentioning

confidence: 99%

Efficient organic mulch thickness for soil and water conservation in urban areas

Wang

Niu

Berndtsson

et al. 2021

Sci Rep

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The use of organic mulch is important for urban green applications. For urban areas in arid and semiarid regions receiving short high-intensive rainfall, rainfall characteristics, and soil slope play an important role for mulch functioning. These properties of mulch were studied. For this purpose, rainfall simulation experiments using organic mulching were conducted in Jiufeng National Forestry Park to analyze the influence of organic mulch under different slope and heavy rainfall events. The results showed that soil water content displayed a decreasing tendency with increasing mulch application. Compared to bare soil, a mulch application of 0.25 kg/m2 and 0.50 kg/m2 led to maximum soil water content and maximum runoff decrease occurred for 0.50 kg/m2 mulch. Higher application rate of mulch displayed less soil water content and greater runoff. The runoff amount and runoff generation rate decreased by 28–83% and 21–83%, respectively, as compared to bare soil. With a mulch application of 0.25–1.00 kg/m2, soil drainage accounted for 56–60% of total rainfall. Overall, an efficient mulch application was found to be 0.25–0.50 kg/m2. The results of this study are relevant for arid and semiarid urban regions that experience heavy rainfall.

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“…Second, rainfall characteristics also have a significant impact on hydrological processes in the watershed. A large number of studies show that rainfall intensity is a key player in the watershed's hydrological process (Zhou et al, 2017;Du et al, 2019;Zhang et al, 2019). Studies conducted by Redding & Devito (2010) showed that the occurrence of lateral flow is mainly determined by rainfall intensity.…”

Section: Effect Of Opps Difference On Hydrological Process Simulationmentioning

confidence: 99%

Hydrological evaluation of open-access precipitation data using SWAT at multiple temporal and spatial scales

Pang¹,

Zhang²,

Xu³

et al. 2020

Preprint

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Abstract. Temporal and spatial precipitation information is key to conducting effective hydrological process simulation and forecasting. Herein, we implemented a comprehensive evaluation of three selected precipitation products in the Jiang River Watershed (JRW) located in southwest China. A number of indices were used to statistically analyze the differences between two open-access precipitation products (OPPs), i.e. Climate Hazards Group Infra-Red Precipitation with Station (CHIRPS) and CPC-Global (CPC), and the rain gauge (Gauge). The three products were then categorized into sub-basins to drive SWAT simulations. The results show: (1) the three products are highly consistent in temporal variation on a monthly scale, yet distinct on a daily scale. CHIRPS is characterized by overestimation of light rain, underestimation of heavy rain, and a high probability of false alarm. CPC generally underestimates rainfall of all magnitudes; (2) All three products satisfactorily reproduce the stream discharges at the JRW outlet with better performance than the Gauge model. On a temporal scale, the OPPs are inferior with respect to capturing flood peak, yet superior at describing other hydrograph features, e.g. rising and falling processes and base flow. On a spatial scale, CHIRPS offers the advantage of deriving smooth, distributed precipitation and runoff due to its high resolution; (3) The water balance components derived from SWAT models with equal simulated streamflow discharges are remarkably different between the three precipitation inputs. The precipitation spatial pattern results in an increasing surface flow trend from upstream to downstream. The results of this study demonstrate that evaluating precipitation products using only streamflow simulation accuracy will conceal the dissimilarities between these products. Hydrological models alter hydrologic mechanisms by adjusting calibrated parameters. Specifically, different precipitation detection methods lead to temporal and spatial variation of water balance components, demonstrating the complexity in describing natural hydrologic processes.

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Effects of rainfall intensity and slope on interception and precipitation partitioning by forest litter layer

Cited by 63 publications

References 39 publications

Retention of eucalyptus harvest residues reduces soil compaction caused by deep subsoiling

Retention of eucalyptus harvest residues reduces soil compaction caused by deep subsoiling

Efficient organic mulch thickness for soil and water conservation in urban areas

Hydrological evaluation of open-access precipitation data using SWAT at multiple temporal and spatial scales

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