Stemflow of a xerophytic shrub (Salix psammophila) in northern China: Implication for beneficial branch architecture to produce stemflow

Yuan, Chunrong; Gao, Guangyao; Fu, Bojie

doi:10.1016/j.jhydrol.2016.05.055

Cited by 49 publications

(56 citation statements)

References 56 publications

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“…Significantly correlated variables were further tested with a partial correlation analysis for their separate effects on SF b . Then, the qualified variables were fed into a stepwise regression with forward selection to identify the most influential bio-/abiotic factors (CarlyleMoses and Schooling, 2015; Yuan et al, 2016). Similar to a principal component analysis and ridge regression, stepwise regression was commonly used because it got a limited effect of multicollinearity (Návar and Bryan, 1990;Honda et al, 2015;Carlyle-Moses and Schooling, 2015).…”

Section: Discussionmentioning

confidence: 99%

“…However, the FR does not provide a good connection between hydrological processes (e.g., rainfall redistribution) and the plant growth processes (e.g., biomass accumulation and allocation). Recently, Yuan et al (2016) introduced the parameter of stemflow productivity (SFP), expressed as the volume of stemflow yield per unit of branch biomass. The SFP describes the efficiency by comparing the stemflow yield of unit biomass increment at different sized branches.…”

Section: Yuan Et Al: Comparisons Of Stemflow and Its Bio-/abioticmentioning

confidence: 99%

“…However, as to biotic mechanisms, although the canopy structure (Mauchamp and Janeau, 1993;Crockford and Richardson, 2000;Pypker et al, 2011) and branch architecture (Herwitz, 1987;Murakami, 2009;Carlyle-Moses and Schooling, 2015) have been studied for years, the most important plant traits vary with location and shrub species and have not yet been determined. The effects of the leaves have been studied more recently at a smaller scale, e.g., leaf orientation (Crockford and Richardson, 2000), shape (Xu et al, 2005), arrangement pattern (Owens et al, 2006), pubescence (Garcia-Estringana et al, 2010), area (Sellin et al, 2012), epidermis microrelief (RothNebelsick et al, 2012), amount , or biomass (Yuan et al, 2016). Comparisons of stemflow yield during summer (the growing or foliated season) and winter (the dormant or defoliated season) generally indicate negative effects of leaves because more stemflow occurs during the leafless period (Dolman, 1987;Masukata et al, 1990;Neal et al, 1993;Mużyło et al, 2012).…”

Section: Yuan Et Al: Comparisons Of Stemflow and Its Bio-/abioticmentioning

confidence: 99%

“…A total of 66 branches for C6-C8 and 61 branches for S6-S8 were measured once during mid-August for the biomass of leaves and stems (BML and BMS, g), the leaf area of the branches (LAB, cm 2 ), and the leaf numbers of the branches (LNB), when the shrubs showed maximum vegetative growth. The BML and BMS were weighted after oven-drying for 48 h. The detailed measurements have been reported in Yuan et al (2016). The validity of the allometric models was verified by measuring another 13 branches of C6-C8 and 14 branches of S6-S8.…”

Section: Field Experimentsmentioning

confidence: 99%

“…4, the regression of LAB, LNB, BML and BMS of C. korshinskii had an approximately 1 : 1 slope (0.99 for the biomass indicators and 1.04 for the leaf traits) and an R 2 value of 0.93-0.95. According to Yuan et al (2016), the regression of S. psammophila had a slope of 1.13 and an R 2 of 0.92. Therefore, those allometric models were appropriate.…”

Section: Species-specific Variation Of Plant Traitsmentioning

confidence: 99%

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Comparisons of stemflow and its bio-/abiotic influential factors between two xerophytic shrub species

Yuan

Gao

2017

Hydrol. Earth Syst. Sci.

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Abstract. Stemflow transports nutrient-enriched precipitation to the rhizosphere and functions as an efficient terrestrial flux in water-stressed ecosystems. However, its ecological significance has generally been underestimated because it is relatively limited in amount, and the biotic mechanisms that affect it have not been thoroughly studied at the leaf scale. This study was conducted during the 2014 and 2015 rainy seasons at the northern Loess Plateau of China. We measured the branch stemflow volume (SF b ), shrub stemflow equivalent water depth (SF d ), stemflow percentage of incident precipitation (SF %), stemflow productivity (SFP), funnelling ratio (FR), the meteorological characteristics and the plant traits of branches and leaves of C. korshinskii and S. psammophila. This study evaluated stemflow efficiency for the first time with the combined results of SFP and FR, and sought to determine the inter-and intra-specific differences of stemflow yield and efficiency between the two species, as well as the specific bio-/abiotic mechanisms that affected stemflow. The results indicated that C. korshinskii had a greater stemflow yield and efficiency at all precipitation levels than that of S. psammophila. The largest inter-specific difference generally occurred at the 5-10 mm branches during rains of ≤ 2 mm. Precipitation amount was the most influential meteorological characteristic that affected stemflow yield and efficiency in these two endemic shrub species. Branch angle was the most influential plant trait on FR. For SF b , stem biomass and leaf biomass were the most influential plant traits for C. korshinskii and S. psammophila, respectively. For SFP of these two shrub species, leaf traits (the individual leaf area) and branch traits (branch size and biomass allocation pattern) had a great influence during lighter rains ≤ 10 mm and heavier rains > 15 mm, respectively. The lower precipitation threshold to start stemflow allowed C. korshinskii (0.9 mm vs. 2.1 mm for S. psammophila) to employ more rains to harvest water via stemflow. The beneficial leaf traits (e.g., leaf shape, arrangement, area, amount) might partly explain the greater stemflow production of C. korshinskii. Comparison of SF b between the foliated and manually defoliated shrubs during the 2015 rainy season indicated that the newly exposed branch surface at the defoliated period and the resulting rainfall intercepting effects might be an important mechanism affecting stemflow in the dormant season.

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Section: Discussionmentioning

confidence: 99%

Section: Yuan Et Al: Comparisons Of Stemflow and Its Bio-/abioticmentioning

confidence: 99%

Section: Yuan Et Al: Comparisons Of Stemflow and Its Bio-/abioticmentioning

confidence: 99%

Section: Field Experimentsmentioning

confidence: 99%

Section: Species-specific Variation Of Plant Traitsmentioning

confidence: 99%

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Comparisons of stemflow and its bio-/abiotic influential factors between two xerophytic shrub species

Yuan

Gao

2017

Hydrol. Earth Syst. Sci.

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Canopy transpiration and stand water balance between two contrasting hydrological years in three typical shrub communities on the semiarid Loess Plateau of China

Fang

Lü

et al. 2019

Ecohydrology

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Understanding the role of canopy transpiration (Tr) in restoring vegetation's water balance is crucial for sustainable water management in semiarid regions. We examined the influencing factors of Tr and quantified stand water balance of three typical shrub species used for ecological restoration on the Loess Plateau of China in two contrasting hydrological years. This study included two native species, Vitex negundo (VN) and Spiraea pubescens (SP), and one introduced species, Hippophae rhamnoides. The experiment was conducted in two consecutive primary growing seasons in 2015 and 2016, during which the annual precipitation (P) was 41.5% and 102% of the long‐term mean. The results showed that meteorological factors influenced the daily Tr primarily, and monthly Tr was mainly correlated with soil water content (SWC) in both the drier and wetter years. However, SWC's effect on Tr was more significant in the drier year. The sums of Tr and soil evaporation were significant in the three communities and accounted for 45.28–99.46% and 17.70–51.36% of the P in the drier year and wetter year, respectively. The changes in net soil water storage (ΔSW, 0–200 cm) were negative in most months in both years, with the greatest ΔSW decrease in VN in July 2015 and the greatest increase in SP in July 2016. Because of its different physiological characteristics, the introduced species maintained a relatively high Tr even in the drier year. Our results indicate that plant Tr and stand water balance should be considered in water‐limited areas to promote ecologically sustainable management.

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Correlations of the root–shoot ratio with soil water content in the patchy alpine grassland of the north‐eastern Qinghai–Tibetan Plateau using electrical resistivity tomography

Zuo,

Li,

Yang

et al. 2023

Ecohydrology

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The root–shoot biomass ratio (R:S) changing the soil water redistribution is not well understood due to a lack of nondestructive technology to characterize the coexistence of plants and soil. This study aims to assess the correlations of the R:S ratios of Achnatherum splendens with soil water content by electrical resistivity tomography (ERT) on the north‐western Qinghai–Tibet Plateau (QTP). During the growing season, an experimental plot including bare patches (BK) and low‐ (LD) and high‐density (HD) A. splendens subplots was designed to quantify soil volumetric water content under different soil depths and antecedent total precipitation conditions for 7 days (AP7). The results showed that the R:S ratio was positive with soil water content in the surface soil layer of 0–10 cm. The synergistic effect of the R:S ratio on soil water in the surface soil layer promoted an increase in surface soil water. However, the nonsynergistic effect in the middle soil layer weakened the soil water increasing, and the effect of the R:S ratio on soil water in the deep soil layer of 40–80 cm was not obvious. In HD, soil water increased between 0.08% and 0.95% and was highest under AP7 > 20 mm conditions. In LD, soil water increased in the surface and deep soil layers but decreased in the middle soil layer, especially under AP7 = 10–20 mm conditions (−1.23%). These findings provide valuable insights that patchy alpine grass survival strategy under future climate change on the QTP, and the results are beneficial to the development of soil–plant–atmosphere continuum models.

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Stemflow of a xerophytic shrub (Salix psammophila) in northern China: Implication for beneficial branch architecture to produce stemflow

Cited by 49 publications

References 56 publications

Comparisons of stemflow and its bio-/abiotic influential factors between two xerophytic shrub species

Comparisons of stemflow and its bio-/abiotic influential factors between two xerophytic shrub species

Canopy transpiration and stand water balance between two contrasting hydrological years in three typical shrub communities on the semiarid Loess Plateau of China

Correlations of the root–shoot ratio with soil water content in the patchy alpine grassland of the north‐eastern Qinghai–Tibetan Plateau using electrical resistivity tomography

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