Assessing the value of electrical resistivity derived soil water content: Insights from a case study in the Critical Zone of the Chinese Loess Plateau

2020 ◽  
Vol 589 ◽  
pp. 125132
Author(s):  
Hui Sun ◽  
Yunqiang Wang ◽  
Yali Zhao ◽  
Pingping Zhang ◽  
Yi Song ◽  
...  
Keyword(s):  
Electrical Resistivity ◽  
Water Content ◽  
Soil Water ◽  
Soil Water Content ◽  
Loess Plateau ◽  
Critical Zone ◽  
Chinese Loess Plateau ◽  
Chinese Loess ◽  
The Chinese Loess Plateau

Evaluation of water use of Caragana korshinskii and Hippophae rhamnoides in the Chinese Loess Plateau

2015 ◽  
Vol 45 (1) ◽  
pp. 15-25 ◽  
Author(s):  
Shengqi Jian ◽  
Chuanyan Zhao ◽  
Shumin Fang ◽  
Kai Yu
Keyword(s):  
Water Content ◽  
Soil Water ◽  
Soil Water Content ◽  
Water Use ◽  
Loess Plateau ◽  
Hippophae Rhamnoides ◽  
Chinese Loess Plateau ◽  
Chinese Loess ◽  
Hippophaë Rhamnoides ◽  
Caragana Korshinskii

Understanding the water-use strategy of trees and shrubs is crucial for developing effective vegetation restoration in regions that are subjected to water scarcity. We studied the water-use strategy of Caragana korshinskii Kom. and Hippophae rhamnoides L. in the Chinese Loess Plateau to evaluate the adaption strategies of these two shrubs, which are both commonly used in the restoration programs in this region. We extrapolated the measurements of water use by individual plants to determine the area-averaged transpiration of the shrublands. There was a good agreement between transpiration estimated by the Penman–Monteith method and by the sap-flow method, which suggests that that the sap-flow method can provide reliable estimates of shrub transpiration at the stand level. Stand transpiration was mainly influenced by environmental factors such as photosynthetically active radiation, vapor pressure deficit, and soil water content. When the soil water content was sufficient, photosynthetically active radiation and vapor pressure deficit were the dominant factors; however, soil water content was the primary factor under low soil moisture levels. Stand transpiration ranged from 0.52 to 4.21 mm·day−1 with a mean of 1.42 mm·day−1 for C. korshinskii and ranged from 0.57 to 3.99 mm·day−1 with a mean of 1.94 mm·day−1 for H. rhamnoides. During the experimental period (from June to September 2013), cumulative transpirations were 173.4 and 236.6 mm for C. korshinskii and H. rhamnoides, respectively, which accounted for up to 88.2% of the rainfall registered during this period. We calculated the soil water balance and measured the water potential of stems and leaves for C. korshinskii and H. rhamnoides. Hippophae rhamnoides had a lower net soil water storage, indicating that it consumed more soil water than C. korshinskii. There were some negative water potential drops between stems and leaves for H. rhamnoides, suggesting the lack of a safety margin for H. rhamnoides. Our results indicated that C. korshinskii is more suitable for afforestation than H. rhamnoides in the Loess Plateau.

scholarly journals Changes in soil water holding capacity and water availability following vegetation restoration on the Chinese Loess Plateau

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yong-wang Zhang ◽  
Kai-bo Wang ◽  
Jun Wang ◽  
Changhai Liu ◽  
Zhou-ping Shangguan
Keyword(s):  
Land Use ◽  
Soil Water ◽  
Loess Plateau ◽  
Soil Layer ◽  
Soil Physical Properties ◽  
Chinese Loess Plateau ◽  
Land Use Type ◽  
Chinese Loess ◽  
Water Holding ◽  
The Chinese Loess Plateau

AbstractChanges in land use type can lead to variations in soil water characteristics. The objective of this study was to identify the responses of soil water holding capacity (SWHC) and soil water availability (SWA) to land use type (grassland, shrubland and forestland). The soil water characteristic curve describes the relationship between gravimetric water content and soil suction. We measured the soil water characteristic parameters representing SWHC and SWA, which we derived from soil water characteristic curves, in the 0–50 cm soil layer at sites representing three land use types in the Ziwuling forest region, located in the central part of the Loess Plateau, China. Our results showed that the SWHC was higher at the woodland site than the grassland and shrubland, and there was no significant difference between the latter two sites, the trend of SWA was similar to the SWHC. From grassland to woodland, the soil physical properties in the 0–50 cm soil layer partially improved, BD was significantly higher at the grassland site than at the shrubland and woodland sites, the clay and silt contents decreased significantly from grassland to shrubland to woodland and sand content showed the opposite pattern, the soil porosity was higher in the shrubland and woodland than that in the grassland, the soil physical properties across the 0–50 cm soil layer improved. Soil texture, porosity and bulk density were the key factors affecting SWHC and SWA. The results of this study provide insight into the effects of vegetation restoration on local hydrological resources and can inform soil water management and land use planning on the Chinese Loess Plateau.

scholarly journals Variations in water content of soil in apricot orchards in the western hilly regions of the Chinese Loess Plateau

2020 ◽  
Vol 19 (1) ◽  
Author(s):  
Dongping Shi ◽  
Hongbing Tan ◽  
Wenbo Rao ◽  
Zihao Liu ◽  
Hartman Issombo Elenga
Keyword(s):  
Water Content ◽  
Loess Plateau ◽  
Chinese Loess Plateau ◽  
Chinese Loess ◽  
The Chinese Loess Plateau

scholarly journals Changes of deep soil desiccation with plant growth age in the Chinese Loess Plateau

2012 ◽  
Vol 9 (10) ◽  
pp. 12029-12060 ◽  
Author(s):  
Y. Q. Wang ◽  
M. A. Shao ◽  
Z. P. Liu ◽  
C. C. Zhang
Keyword(s):  
Soil Water ◽  
Loess Plateau ◽  
Turning Point ◽  
Chinese Loess Plateau ◽  
Root Depth ◽  
Vegetation Types ◽  
Deep Soil ◽  
Chinese Loess ◽  
Soil Desiccation ◽  
The Chinese Loess Plateau

Abstract. Negative water balance in soil can lead to soil desiccation and subsequent the formation of a dried soil layer (DSL). Essential progress on DSL temporal change has been hampered by difficulty in collecting deep soil water samples (i.e. > 1000 cm), which are necessary to quantify the real extent of DSL. We collected soil samples up to a depth of 1800 cm and investigated the evolution of soil water content (SWC) and DSL under three vegetation types (C. korshinskii, R. pseudoacacia, apple) in three zones (Ansai, Luochuan, and Changwu) of the Chinese Loess Plateau. As plant growth age increased, SWC, available soil water (ASW), SWC within DSL (DSL-SWC), and quantity of water deficit for DSL (DSL-QWD) showed similar change trends of decreasing at first and then increasing, whereas DSL thickness (DSLT) showed an increasing trend over time. A turning point in soil water change was found for the three vegetation types. In Changwu zone, the turning point, both in and out of DSL, was corresponded to the 17-year-old apple orchard. The period from 9 to 17 yr was vital to maintain the buffering function of deep soil water pool and to avoid the deterioration of soil desiccation because the highest mean decline velocity of ASW and the maximum mean forming velocity of DSLT were 165 mm yr−1 and 168 cm yr−1, respectively. Significant correlations were found between DSLT and growth age and root depth, and between DSL-QWD and root depth, whereas mean DSL-SWC had no significant correlation with either growth year or root depth. Soil water condition was highly dependent on the growth year of the plants. This information provides pertinent reference for water resource management in the Chinese Loess Plateau and possibly in other water-limited regions in the world.

Sign in / Sign up

Export Citation Format

Share Document