N Isotope Fractionation in Tree Tissues During N Reabsorption and Remobilization in Fagus crenata Blume

Seidel, Felix; C., M. Larry Lopez; Celi, Luisella; Bonifacio, Eleonora; Oikawa, Akira; Yamanaka, Toshiro

doi:10.3390/f10040330

Cited by 10 publications

(7 citation statements)

References 52 publications

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“…Furthermore, CJ needles showed no significant differences in P content among age groups (Fig. 4) in contrast to N content, which decreased from the youngest to the oldest needle by 25% as reported by Seidel et al (2019b) (Fig. S1).…”

Section: Soil Characteristicsmentioning

confidence: 61%

“…4), unlike the significant decrease in N content observed with age, where the youngest needles contained 25% more N than the oldest (P < 0.05) (Fig. S1, taken from Seidel et al 2019b). Thus, by separating needles by age, 0-year old needles N:P ratios were higher than in 2 and 3-year old needles (P < 0.05, data not shown) during all phenological stages.…”

Section: Plant Specific N and P Allocation Patternsmentioning

confidence: 78%

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Seasonal phosphorus and nitrogen cycling in four Japanese cool-temperate forest species

Seidel

Bonifacio

et al. 2022

Plant Soil

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Purpose In plant-soil systems, phosphorus partitioning during the annual cycle related to nitrogen partitioning remains largely unknown. The present study aims at assessing the soil-plant P allocation patterns of four tree species along four phenological stages and its relationship with tissues and soil N concentrations. Methods Cryptomeria japonica, Larix kaempferi, Fagus crenata and Robinia pseudoacacia trees were selected to sample coarse roots, sapwood, foliage, litter and soil during four phenological stages where total and Olsen extractable P and nitrogen content were measured respectively. Results Intra- and inter plant tissue nitrogen correlated well with phosphorus during the four phenological stages, especially root nitrogen. Fagus and Robinia were phosphorus limited, Larix was nitrogen limited and Cryptomeria co-limited. All species reabsorbed phosphorus and nitrogen from foliage prior to leaf abscission and stored nitrogen in roots and sapwood. Phosphorus storage was solely found in sapwood of Robinia. Soil dissolved ammonium correlated positively with nitrogen reabsorption efficiency during the green leaf stage, while single soil nutrient variables did not correlate with phosphorus reabsorption efficiency. Conclusions Plant tissues nitrogen partitioning correlated well with their respective phosphorus partitioning and the increase of soil NH4+ correlated positively with nitrogen reabsorption efficiency, regardless of tree species during the green leaf stage. The results of this study show the intricate relationship that exists between nitrogen and phosphorus in the soil-plant continuum as well as the tree species specific internal cycling of these nutrients.

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Section: Soil Characteristicsmentioning

confidence: 61%

Section: Plant Specific N and P Allocation Patternsmentioning

confidence: 78%

Seasonal phosphorus and nitrogen cycling in four Japanese cool-temperate forest species

Seidel

Bonifacio

et al. 2022

Plant Soil

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“…Snow cover protects plants from frost damages and the length of coverage and snowmelt determine the rate of plant growth (Beniston, Keller, & Goyette, 2003;Wang, Li, Hu, & Wang, 2008). The dominant tree species in Japanese forests are beech (Fagus Crenata) and Japanese cedar (Cryptomeria japonica), which is the latter the main planted species in Japan (Seidel et al, 2019;Seidel, Lopez, Guggenberger, & Nobori, 2017). These tree species start transpiration when snow cover is still several meters high (Osonoi, 2018).…”

Section: Introductionmentioning

confidence: 99%

Soil temperature and soil moisture dynamics in winter and spring under heavy snowfall conditions in North‐Eastern Japan

Brandt

Zhang

Caceres

et al. 2020

Hydrological Processes

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Warm winters and high precipitation in north‐eastern Japan generate snow covers of more than three meters depth and densities of up to 0.55 g cm−3. Under these conditions, rain/snow ratio and snowmelt have increased significantly in the last decade under increasing warm winters. This study aims at understanding the effect of rain‐on‐snow and snowmelt on soil moisture under thick snow covers in mid‐winter, taking into account that snowmelt in spring is an important source of water for forests and agriculture. The study combines three components of the Hydrosphere (precipitation, snow cover and soil moisture) in order to trace water mobility in winter, since soil temperatures remained positive in winter at nearly 0.3°C. The results showed that soil moisture increased after snowmelt and especially after rain‐on‐snow events in mid‐winter 2018/2019. Rain‐on‐snow events were firstly buffered by fresh snow, increasing the snow water equivalent (SWE), followed by water soil infiltration once the water storage capacity of the snowpack was reached. The largest increase of soil moisture was 2.35 vol%. Early snowmelt increased soil moisture with rates between 0.02 and 0.035 vol% hr−1 while, rain‐on‐snow events infiltrated snow and soil faster than snowmelt and resulted in rates of up to 1.06 vol% hr−1. These results showed the strong connection of rain, snow and soil in winter and introduce possible hydrological scenarios in the forest ecosystems of the heavy snowfall regions of north‐eastern Japan. Effects of rain‐on‐snow events and snowmelt on soil moisture were estimated for the period 2012–2018. Rain/snow ratio showed that only 30% of the total precipitation in the winter season 2011/2012 was rain events while it was 50% for the winter 2018/2019. Increasing climate warming and weakening of the Siberian winter monsoons will probably increase rain/snow ratio and the number of rain‐on‐snow events in the near future.

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“…The Taojia River basin is facing problems of severe heavy metal pollution, soil and water losses, and excessive amounts of suspended matter in the river that have led to sedimentation in the stream [ 22 ]. However, there are few studies available on soil enzymes in association with different land use practices in the areas surrounding polluted river basins [ 23 , 24 ]. In this study, we focused on this urgent topic with the aim of speeding up the ecological restoration and rehabilitation in the area and improving the local ecological environment.…”

Section: Introductionmentioning

confidence: 99%

Land Use Changes Influence the Soil Enzymatic Activity and Nutrient Status in the Polluted Taojia River Basin in Sub-Tropical China

Yuan

Liang

et al. 2022

IJERPH

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Different land use practices may improve soil quality or lead to soil deterioration. Recently, environmental problems, such as heavy pollution and soil erosion, have led to serious land degradation in the Taojia River basin. In this study, we explored the soil fertility characteristics (mechanical composition; pH; soil organic matter (SOM); soil total nitrogen (TN); and the activity of four enzymes, i.e., urease, hydrogen peroxide, alkaline phosphatase, and sucrose enzymes) under different types of land use in the Taojia River basin. Soil samples were taken from 0–10 cm, 10–20 cm, and 20–40 cm depths from four different land use types that were widely used in the Taojia river basin, including cultivated land, vegetable fields, woodlands, and wastelands. The results showed that the soil enzyme activity and the constituents of the soil were closely related and significantly affected each other (p < 0.05). Woodland soil exhibited the highest content of SOM in all soil depths. Soil total nitrogen mainly depended on the accumulation of biomass and the decomposition intensity of organic matter, so the changes in TN followed the trends of the changes in SOM. Woodland soil showed an improved mechanical composition. We were also able to observe an increased clay content in woodland soil. Woodland soil also exhibited the reversal of soil desertification and an increase in nutrient/water retention capacity. Therefore, an increase in woodland areas would be an appropriate goal in terms of land use in order to improve the eco-environmental quality of the Taojia River basin.

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N Isotope Fractionation in Tree Tissues During N Reabsorption and Remobilization in Fagus crenata Blume

Cited by 10 publications

References 52 publications

Seasonal phosphorus and nitrogen cycling in four Japanese cool-temperate forest species

Seasonal phosphorus and nitrogen cycling in four Japanese cool-temperate forest species

Soil temperature and soil moisture dynamics in winter and spring under heavy snowfall conditions in North‐Eastern Japan

Land Use Changes Influence the Soil Enzymatic Activity and Nutrient Status in the Polluted Taojia River Basin in Sub-Tropical China

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