Effects of rainfall and vegetation to soil water input and output processes in the Mu Us Sandy Land, northwest China

Yu, Xiaona; Huang, Yongmei; Li, Engui; Li, Xiaoyan; Guo, Weihua

doi:10.1016/j.catena.2017.10.023

Cited by 49 publications

(30 citation statements)

References 36 publications

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“…Climate change is expected to substantially influence precipitation distribution and amounts (Zittis et al, 2017). Studying of temporal distribution of heavy rainfall events is very important to evaluate the amount of runoff and soil erosion and also can modify water availability, groundwater recharge and hydroelectric production (De Lima et al, 2013;Yu et al, 2018). Several studies on spatial and temporal variations of precipitation concentration have been undertaken all over the world to study the statistical structure of daily precipitation according to its concentration during the year and evaluate the heaviest precipitation events (Monjo and Martin-Vide, 2016;Yeşilırmak and Atatanir, 2016;Royé and Martin, 2017;Zheng et al, 2017;Serrano-Notivoli et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal variability of daily precipitation concentration and its relationship to teleconnection patterns over the Mediterranean during 1975–2015

Mathbout

López-Bustins

Royé

et al. 2019

Intl Journal of Climatology

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This study has addressed the spatiotemporal distribution of the daily rainfall concentration and its relation to the teleconnection patterns across the Mediterranean (MR). Daily concentration index (CI) and the ordered n index ( nor) are used at annual time scale to reveal the statistical structure of precipitation across the MR based on 233 daily rainfall series for the period 1975–2015. Eight teleconnection patterns, North Atlantic Oscillation (NAO), Mediterranean Oscillation (MO), Western Mediterranean Oscillation (WeMO), Upper‐Level Mediterranean Oscillation index (ULMO), East Atlantic (EA) pattern, East Atlantic/West Russia (EATL/WRUS) pattern, Scandinavia (SCAND) pattern and Southern Oscillation (SO) at annual time scale are selected. The spatiotemporal patterns in precipitation concentration indices, annual precipitation and their teleconnections with previous large‐scale circulations are investigated. Results show a strong connection between the CI and the nor (r = 0.70, p < .05) which present the same relative areas of high and low concentration. The annual values range from 0.57 to 0.70 for CI and 0.49 to 0.71 for nor index which show a high daily precipitation concentration across the MR. Trend analysis demonstrated mostly significant increasing trends for both indices. This increase is mainly found in south France, northern coastlands of the Iberian Peninsula (IP), Greece and Tunisia. An inverse relationship between the number of rainy days and concentration indices is evident. Both of WeMO and MO can play an important role in modulating rainfall in the northwest Mediterranean. The positive EATL/WRUS phase is mainly connected with positive precipitation mean anomalies in the eastern Mediterranean and vice versa in the west. The high daily precipitation concentration values over south France, northeast Spain, Croatia and Tunisia are linked to the low values of WeMO and high values of EA. These results could pave the way for new possibilities regarding the projection of precipitation concentration and precipitation irregularity in downscaling techniques.

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Section: Introductionmentioning

confidence: 99%

Spatiotemporal variability of daily precipitation concentration and its relationship to teleconnection patterns over the Mediterranean during 1975–2015

Mathbout

López-Bustins

Royé

et al. 2019

Intl Journal of Climatology

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“…Rainfall and soil moisture present significant responses to the arid climate conditions in arid and semiarid zones, which have fragile ecological environments [1,2]. For example, when the wet season is Forests 2019, 10, 663; doi:10.3390/f10080663 www.mdpi.com/journal/forests delayed, a sharp drop in surface soil moisture content occurs and also the underground water level decreases in that year [3].…”

Section: Introductionmentioning

confidence: 99%

Optimizing the Stand Density of Robinia pseudoacacia L. Forests of the Loess Plateau, China, Based on Response to Soil Water and Soil Nutrient

Hou

Wang

et al. 2019

Forests

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Improving low-efficiency artificial forests represents a popular forest hydrological issue, and exploring the optimal stand density (OSD) of low-efficiency artificial forests is an effective method for improving the soil conditions of forestland to prevent the deterioration of ecological function. Water and nutrients were the main limiting factors for vegetation growth. However, relatively few studies addressed the optimization of stand density based on these two factors at the same time. In this study, a total of 176 standard plots (20 × 20 m2) with six stand densities (~500, ~1000, ~1500, ~2000, ~2500 and ~3000 plants·hm−2) were established to investigate the water resources (soil moisture content (SMC), soil evaporation rate (SER), and vegetation transpiration rate (VTR)) and soil nutrient resources (total nitrogen (TN), total phosphorus (TP), total potassium (TK), calcium (CaCO3), organic matter content (OMC)) in low-efficiency Robinia pseudoacacia forestland on the Loess Plateau in western Shanxi, China from June to September each year from 2017 to 2018. The relationships between stand density and water and nutrient resources were analysed with the response surface method (RSM). The RSM results indicated that the OSD averaged 1594 plants·hm−2 and ranged from 940 to 2386 plants·hm−2. The percentage of standard plots with an unreasonable stand density was 35.29%, and 65% of these plots had a value that was higher than the maximum in the range while 35% had a value that was lower than the minimum. These results indicate that the current stand density should be manipulated to fall within the identified OSD range to ensure the normal functions of soil and water conservation in R. pseudoacacia forests. The results of this study serve as a guide for optimizing the stand density of low-efficiency R. pseudoacacia forests in China.

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“…The rainfall amount is positively correlated with SWC because precipitation is the main water input (X. Yu, Huang, Li, Li, & Guo, ). However, a negative correlation coefficient value represents the contribution of rainfall amount to a decrease in SWC.…”

Section: Resultsmentioning

confidence: 99%

“…The top soil layers were more critical for rainfall infiltration than for water storage. In fact, the amount of water stored in soil layers is determined by the competition between infiltration rates (input) and drainage rates (output; X. Yu et al, ). In most cases, low bulk density and high porosity cause higher infiltration rates (Y. Yu et al, ) and drainage rates (Lv, Hao, Liu, & Yu, ).…”

Section: Discussionmentioning

confidence: 99%

Stratification response of soil water content during rainfall events under different rainfall patterns

Yinglan

Wang

Sun

et al. 2018

Hydrological Processes

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Many researchers have studied the influence of rainfall patterns on soil water movement processes using rainfall simulation experiments. However, less attention has been paid to the influence under natural condition. In this paper, rainfall, soil water content (SWC), and soil temperature at 10-, 20-, 30-, 40-, and 50-cm depths were simultaneously monitored at 1-min intervals to measure the variation in SWC (SWCv) in response to rainfall under different rainfall patterns. First, we classified rainfall events into four patterns. During the study period, the main pattern was the advanced rainfall pattern (38% of all rainfall events), whereas the delayed, central, and uniform rainfall patterns had similar frequencies of about 20%. During natural rainfall, rainwater rapidly passed through the top soil layers (10-40 cm) and was accumulated in the bottom layer (50 cm). When a high rainfall pulse occurred, the water storage balance was disturbed, resulting in the drainage of initial soil water from the top layers into the deeper layers. Therefore, the critical function of the top layers and the bottom layers was infiltration and storage, respectively. The source of water stored in the bottom layer was not only rainfall but also the initial soil water in the upper soil layers.Changes in soil temperature at each soil depth were comonitored with SWCv to determine the movement characteristics of soil water under different rainfall patterns.Under the delayed rainfall pattern, preferential flows preferred to occur. Under the other rainfall patterns, matrix flow was the main form of soil water movement. Rainfall amount was a better indicator than rainfall intensity for SWCv in the bottom layer under the delayed rainfall pattern. These results provide insights into the responses of SWCv under different rainfall patterns in northern China.

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Effects of rainfall and vegetation to soil water input and output processes in the Mu Us Sandy Land, northwest China

Cited by 49 publications

References 36 publications

Spatiotemporal variability of daily precipitation concentration and its relationship to teleconnection patterns over the Mediterranean during 1975–2015

Spatiotemporal variability of daily precipitation concentration and its relationship to teleconnection patterns over the Mediterranean during 1975–2015

Optimizing the Stand Density of Robinia pseudoacacia L. Forests of the Loess Plateau, China, Based on Response to Soil Water and Soil Nutrient

Stratification response of soil water content during rainfall events under different rainfall patterns

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