The characteristics of soil water cycle and water balance on steep grassland under natural and simulated rainfall conditions in the Loess Plateau of China

Chen, H.; Shao, Mingan; Li, Yuyuan

doi:10.1016/j.jhydrol.2008.07.037

Cited by 179 publications

(116 citation statements)

References 24 publications

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“…Hence, it was reasonable to consider that the recharge depth would be deeper than 100 cm on the studied hillslope, since natural grassland was the dominant land use. In addition, Chen et al (2008) suggested that infiltrating rainwater would usually recharge the 0-200 cm soil layer in the Loess Plateau region. The rainfall of their study area was 460 mm, which was a little higher than the rainfall amount occurring during our study (430 mm).…”

Section: Soil Water Recharge Depth By Rainwatermentioning

confidence: 99%

Spatio-temporal variability and temporal stability of water contents distributed within soil profiles at a hillslope scale

Gao

Shao

Peng

et al. 2015

CATENA

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a b s t r a c t a r t i c l e i n f oInformation about soil water content (SWC) within soil profiles in terms of its spatio-temporal variability and temporal stability is crucial when selecting appropriate soil water management practices. However, detailed profile distribution features for related indices are not clear on the Chinese Loess Plateau. This study aimed to investigate the depth dependency of spatio-temporal variability and temporal stability of SWC at the hillslope scale using an intensive sampling strategy for both horizontal and vertical directions as well as over time. The SWCs at 20 depths within 0-300 cm soil profiles were measured on 20 occasions between July 2008 and October 2010 at 91 locations on a hillslope on the Loess Plateau, China. Results showed that although the profile distributions of investigated statistical parameters differed greatly, they were all depth dependent. Based on both the spatio-temporal variability and the temporal stability characteristics using eight indices, the studied soil profile (0-300 cm) could be divided into three soil layers, i.e., 0-60, 60-160 and 160-300 cm, with a characteristic feature of "irregularly changing", "regularly changing", and "relatively constant", respectively. The deepest rainwater replenishment depth was approximately 160 cm. Therefore, choosing 200 cm as the sampling depth would be sufficient in similar areas. Such findings are useful for designing an optimal strategy for sampling and management of profile soil moisture.

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Section: Soil Water Recharge Depth By Rainwatermentioning

confidence: 99%

Spatio-temporal variability and temporal stability of water contents distributed within soil profiles at a hillslope scale

Gao

Shao

Peng

et al. 2015

CATENA

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“…This region has a distinctive landscape where the main geomorphic landforms are "yuan" (cliff-edged plains), ridges, hills, and gullies of various sizes (Wang et al, 2011a). Most of the Loess Plateau is covered by loess deposits ranging from 30 m to 80 m in thickness; loess is a highly erosionprone soil that is susceptible to the forces of wind and water (Chen et al, 2008;Wang et al, 2010). The Loess Plateau generally has a subhumid and semi-arid climate, with extensive monsoonal influence (Chen et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Temperature and precipitation changes over the Loess Plateau between 1961 and 2011, based on high-density gauge observations

Sun

Miao

Duan

et al. 2015

Global and Planetary Change

118

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a b s t r a c t a r t i c l e i n f oThe Loess Plateau has the most serious soil erosion in China and is the main source of sediment in the Yellow River. In this study, we systematically analyzed the changes in the mean and extreme values for temperature and precipitation over the Loess Plateau between 1961 and 2011, using a gridded dataset with high-density gauge data. Statistically significant positive trends (p b 0.05) in the mean, maximum, and minimum temperature values (TM, TX, and TN) were identified in almost all regions. Warming rates increased from the southeast to the northwest of the Loess Plateau for both TM and TN; however, for TX, the greatest warming increases were observed in the southeast region. We also found general decreases in the diurnal temperature range and the number of cold nights and cold days, and increases in the length of the growing season and the number of warm days and warm nights. Moreover, relatively intense changes occurred in the high percentile ranges for both TX and TN. The total amount of precipitation on wet days decreased over a large area of the Loess Plateau, particularly in the southeast region. The inequality in the spread of precipitation over the year (temporal inequality) increased extensively over the past fifty years in the wet region. Approximately 37.60% of the total area with a reduced amount of precipitation had concurrent decreases in both the frequency and intensity of rainfall. However, approximately 37.20% of the area with a reduced amount of precipitation had decreases in the frequency but increases in the intensity of rainfall. The proportion of days with light or moderate precipitation was decreased in the wet region which mainly located in the southwest of the Loess Plateau, but there were only minor changes in extreme precipitation events. Overall, when both temperature and precipitation changes were combined, we observed that the southwest of the Loess Plateau has undergone the largest degree of climate change. Consequently, both the ecological environment and local agriculture on the Loess Plateau will suffer increased challenges: the decline in water availability will lead to more frequent droughts, yet the risk of flood and soil erosion from extreme precipitation events will not be reduced.

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“…Since the 1950s, much attention has been paid to loess landforms from geological and geomorphological viewpoints. Some scholars investigated the regional variation of soil erosion and the stages of geomorphological developmental of landforms in the Loess Plateau (Stolte et al, 2003;Xu et al, 2004;Cheng et al, 2007;Chen et al, 2008;Zheng et al, 2008;Chen et al, 2010;Hughes et al, 2010;Liu and Liu, 2010;Fu et al, 2011;Zhu, 2012;Xiong et al, 2013). Liu (1985) investigated profiles of loess deposits for the three typical landforms in the Loess Plateau (hill, ridge, and tableland), and found that the sedimentary environment of loess deposits, including the underlying bedrock paleotopography, has been related to climate change.…”

Section: Introductionmentioning

confidence: 99%

Modeling the evolution of loess-covered landforms in the Loess Plateau of China using a DEM of underground bedrock surface

Xiong

Tang

et al. 2014

Geomorphology

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The characteristics of soil water cycle and water balance on steep grassland under natural and simulated rainfall conditions in the Loess Plateau of China

Cited by 179 publications

References 24 publications

Spatio-temporal variability and temporal stability of water contents distributed within soil profiles at a hillslope scale

Spatio-temporal variability and temporal stability of water contents distributed within soil profiles at a hillslope scale

Temperature and precipitation changes over the Loess Plateau between 1961 and 2011, based on high-density gauge observations

Modeling the evolution of loess-covered landforms in the Loess Plateau of China using a DEM of underground bedrock surface

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