The asymptotic response of soil water holding capacity along restoration duration of artificial grasslands from degraded alpine meadows in the Three River Sources, Qinghai–Tibetan Plateau, China

He, Honglin; Li, Hongqin; Zhu, Jingbin; Wei, Yaxi; Zhang, Fawei; Yang, Yongsheng; Li, Yingnian

doi:10.1007/s11284-018-1608-y

Cited by 5 publications

(2 citation statements)

References 30 publications

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“…In line with our results, Guo et al [29] revealed that after 11 years of mixed soil use, the compound soil with a mixing ratio of 1:1 had the highest TN content. This may be because as the feldspathic sandstone content gradually increases, the capacity of water holding in compound soil increases, which can promote an increase in soil nitrogen content [30]. Moreover, our results demonstrated that the C:N and C:P ratios in C3, C2, and C1 were all lower than the ratios on a global scale (16.8) [31].…”

Section: Variation Of the Stoichiometric Ratio In Different Compound ...mentioning

confidence: 60%

Different Response of Soil Microbial Carbon Use Efficiency in Compound of Feldspathic Sandstone and Sand

et al. 2022

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The stoichiometry of efficient soil microbial carbon use is a sensitive index for measuring changes in soil quality and plays a crucial role in research on ecological stoichiometry in the soil nutrient cycle. To further understand the effect of feldspathic sandstone and sand compound ratios on microbial carbon use efficiency (CUE), we simulated the field conditions of the feldspathic sandstone-sand compound layer in the Mu Us sandy land and analyzed the soil C:N:P ratio, microbial biomass, extracellular enzyme activity, and microbial carbon use efficiency in soils with different compound ratios. The results demonstrated that an increase in the feldspathic sandstone content had insignificant effects on the soil C:N:P ratio. The maximum values for microbial biomass nitrogen (MBN) and microbial biomass phosphorus (MBP) were observed at compound ratios of 1:5 and 1:2, respectively. Calculations of microbial carbon use efficiency and vector analysis revealed that the microbial carbon use efficiency increased as the feldspathic sandstone content increased, P limitation existed in all compound soils, and soil with a 1:1 compound ratio may be substantially less limited. In conclusion, our research indicated that adding feldspathic sandstone to sand improved soil quality, and the compound ratio affected soil microorganisms; nevertheless, it did not significantly change soil nutrient restriction. Our study provides a theoretical basis for the development and utilization of desert land resources.

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Section: Variation Of the Stoichiometric Ratio In Different Compound ...mentioning

confidence: 60%

Different Response of Soil Microbial Carbon Use Efficiency in Compound of Feldspathic Sandstone and Sand

et al. 2022

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“…in Maqin County, Qinghai Province, China (Figure 1). Mean annual precipitation is 514 mm, with more than 80% falling in the growing season from May to September, and mean annual temperature is À0.5 C (He et al, 2018;Li et al, 2014). The degraded meadow is dominated by forbs such as Aconitum pendulum, Ligularia virgaurea, Pedicularis kansuensis, Oxytropis ochrantha, Ajania tenuifolia, Polygonum sibiricum, Euphorbia fischeriana and Morina chinensis, with a mean vegetation height of less than 5 cm and a maximum canopy cover of 55% during the growing season.…”

Section: Study Site Descriptionmentioning

confidence: 99%

Comparison of AET partitioning and water balance between degraded meadow and artificial pasture in Three‐River Source Region on the Qinghai‐Tibetan Plateau

et al. 2021

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Actual evapotranspiration (AET) is the main component of water balance and comprises evaporation (E) and transpiration (T). Despite widespread recognition of the importance of water in terrestrial ecosystems, knowledge about key processes in the water balance is surprisingly limited, especially for how water is partitioned between E and T. We used a daily time step soil water model (SOILWAT2) and 10 years of data to describe AET partitioning and water balance of a degraded meadow and an artificial pasture in the Three-River Source Region on the Qinghai-Tibetan Plateau.Our results showed that there are two important environmental factors influencing water balance processes: evaporative demand of the atmosphere and precipitation.Due to the same evaporative demand and precipitation regime, the AET between our two sites was similar in seasonal trends and annual amounts. On an annual basis, AET and deep drainage accounted for almost 100% of the precipitation received by both the two sites. Despite the similarity of annual AET between the degraded meadow and the artificial pasture, the AET partitioning between the two sites was substantially different. Mean annual transpiration/actual evapotranspiration (T/AET) was 27% in the degraded meadow and 52% in the artificial pasture. The key controls on AET partitioning were vegetation and soil, and compared to soil, our study emphasized the influence of vegetation, and high amounts of biomass resulted in the highest values of T/AET in the artificial pasture. Additionally, we identified deep drainage as an important and previously overlooked component of water balance accounting for an average of approximately 21% of the annual precipitation in both the two study sites.

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Application of aquatic plants in ecological restoration of sponge city construction

Zeng,

Ma,

Zhao

2024

Trop Ecol

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The asymptotic response of soil water holding capacity along restoration duration of artificial grasslands from degraded alpine meadows in the Three River Sources, Qinghai–Tibetan Plateau, China

Cited by 5 publications

References 30 publications

Different Response of Soil Microbial Carbon Use Efficiency in Compound of Feldspathic Sandstone and Sand

Different Response of Soil Microbial Carbon Use Efficiency in Compound of Feldspathic Sandstone and Sand

Comparison of AET partitioning and water balance between degraded meadow and artificial pasture in Three‐River Source Region on the Qinghai‐Tibetan Plateau

Application of aquatic plants in ecological restoration of sponge city construction

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