Ecological stoichiometry characteristics of carbon, nitrogen, phosphorus, and potassium of different economic tree species in the karst frigid and arid area

Lu, 王璐 Wang; Yanghua, 喻阳华 Yu; Rongrong, 邢容容 Xing; Shiyi, 秦仕忆 Qin

doi:10.5846/stxb201709051598

Cited by 18 publications

(20 citation statements)

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“…Soil C/P ratio can be used to indicate the potential of P release from soil organic matter mineralization by microbes or foraging P from solid phase minerals in the environment (Bandyopadhyay et al, 2010). The lower the soil C/P ratio value is, the higher the availability of P in soil (Wang & Yu, 2008). This indicates the net mineralization of soil P when soil C/P ratio is less than 200 but indicates the net fixation of nutrients when soil C/P ratio is more than 300 (Brady & Weil, 2019b).…”

Section: Discussionmentioning

confidence: 99%

“…The stoichiometric flexibility of plant C/N/P ratios could in turn exert a significant effect on biogeochemical cycles and ecosystem functions (Sardans et al, 2012; Sistla & Schimel, 2012). In addition, soil stoichiometry characteristics can be significantly affected by climate changes and topography (Delgado‐Baquerizo et al, 2013; Jiao et al, 2013; Li et al, 2014; Wang & Yu, 2008; Yang et al, 2015), as well as by fertile islands (Ochoa‐Hueso et al, 2018). Therefore, these results suggested that, similar to fertile island effects, the role of tamarisk shrubs in altering soil stoichiometry was driven by the interaction between macro‐ and microtopography.…”

Section: Discussionmentioning

confidence: 99%

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Does the fertile island effect in tamarisk nebkhas enhance in the northern Tarim Basin in the context of global warming?

Yin,

Shi,

Zhou

et al. 2023

Ecosphere

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With the intensification of global warming, uncertainty regarding ecosystem evolution trends in drylands has increased. The objective of this article was to test whether the desertification process of tamarisk shrubland was intensified by comparing fertile island effects and soil ecological stoichiometry characteristics at different time periods. The tamarisk shrubland in the “shrubland” and “shrub duneland” stages in the northern Tarim Basin was selected, and soil samples were collected from the tamarisk nabkhas and from the interspaces between tamarisk nebkhas at the 0‐ to 30‐cm soil layers in 2009 and 2018. Soil carbon (C), nitrogen (N), and phosphorous (P) were analyzed, and the C/N, C/P, and N/P ratios were calculated. In comparison with 2009, fertile island effects were completely collapsed in the shrub duneland stage, with no obvious changes in the shrubland stage in 2018. The average soil C/N ratio decreased from a value greater than 25 in both stages. The average value of soil C/P ratio was below 200 in the shrubland and shrub duneland stages, with almost no marked change after nine years. The soil N/P ratio in our study significantly increased in 2018 than in 2009, but the soil N/P ratio was still much less than 11.9. Significantly positive correlations were observed between the relative interaction index (RII) of soil organic carbon (SOC) and soil total nitrogen (TN) and the soil C/P and N/P ratios in the tamarisk nebkhas. These results suggested that (1) fertile island effects were positive in relation to soil stoichiometry in tamarisk nebkhas in most cases; (2) the desertification process was accelerated in the shrub duneland stage, with no obvious progress during the shrubland stage; and (3) the loss of soil C from the collapsed fertile islands could therefore accelerate global warming.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Does the fertile island effect in tamarisk nebkhas enhance in the northern Tarim Basin in the context of global warming?

Yin,

Shi,

Zhou

et al. 2023

Ecosphere

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“…As the essential mineral elements for plant growth and a common limiting element in ecosystems, ratios of C, N and P may govern and influence the carbon cycle in ecosystems (Zeng & Chen, 2005). Soil C:N:P ratio is mainly controlled by regional hydrothermal conditions and soil formation characteristics, such as the climate, topography, bedrock and vegetation (Wang & Yu, 2008). And the human activities are also significant variables that affect the C: N: P ratio (Falkowski et al, 2000).…”

Section: Discussionmentioning

confidence: 99%

Wetland‐type conversion drives the C, N and P stoichiometry change of soil in river plain of lower of the Yellow River

Lin

Huai

Riaz³

et al. 2023

Soil Use and Management

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Land use conversion on river plain has profound impacts on soil characteristics and elemental stoichiometry. Four wetland types (Riparian lower‐beach wetland [RLW], Riparian higher‐beach wetland [RHW], Cultivated wetland [CW] and Mesophytic wetland [MW]) were selected in the lower Yellow River area to investigate the consequence of wetland type conversion on soil carbon (C), nitrogen (N) and phosphorus (P) stoichiometry. The results demonstrated that wetland conversion induced significant spatio‐temporal variations in soil C, N and P stoichiometry and physicochemical characteristics in soil. Frequent agricultural activities (fertilizer input) raised the nutrient content of natural wetland, particularly in surface soil (0–30 cm). Soil volumetric water content (VWC), soil bulk density (SBD), pH and soil enzyme activity varied significantly in different wetlands. Total carbon (TC) and total nitrogen (TN) contents in MW decreased with increasing soil depth (<40 cm layers), as did TN and total phosphorus (TP) contents in CW. On the other hand, TC, TN and TP contents in RLW and RHW did not change significantly with soil depth. However, the contents of TOC, and Fe/Al‐P, etc., varied among soil layers and among wetland types. Furthermore, the stoichiometric characteristics changed significantly in some soil layers, with mean values being less than the Chinese average. Statistically, significant positive correlations were determined between TC and TN (r = .56), TDC and TP (r = .62), N:P and pH (r = .57) (p < .05) and and pH (r = .66, p < .01). VWC was negatively correlated with pH (r = −.56, p < .05), while C/P was negatively associated with soil temperature (ST) and SBD (r = −.55, r = −.64, p < .05). TDC, IP, TN, Fe/Al‐P and ST were identified as the dominant factors, with the percentage of variance 41%, 20%, 12%, 9% and 6% respectively. These findings have a great scientific significance for the ecological conservation of wetlands in the lower Yellow River area.

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“…The C/P and C/N of soil are diagnostic indicators of the nutrient balance of C, N and P [38]. The lower the soil C/P is, the higher the soil P availability, and the higher the soil C/N is, the lower the decomposition rate of organic nitrogen [39]. Precipitation can cause changes in soil porosity and affect the activity of microorganisms and their utilization of organic compounds.…”

Section: The Influence Of Precipitation Patterns On the Ecological St...mentioning

confidence: 99%

Ecological Stoichiometric Changes and the Synergistic Restoration of Vegetation Concrete Restoration Systems under Different Precipitation Conditions

Dong

Wang

et al. 2022

Water

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Based on vegetation-soil nutrient monitoring data under different precipitation conditions, this study investigated the impact of precipitation changes on the ecological restoration process of disturbed slopes. Precipitation change, to a certain extent, changed the carbon (C), nitrogen (N) and phosphorus (P) content and the stoichiometric ratio of the soil–plant system. With the increase of the weekly precipitation from 10 to 20 mm, the C content of Cynodon and Indigofera Amblyantha Craib on each slope gradually increased, increased by 8.69% and 4.28%, respectively, compared with the initial recovery period, and the N/P of Cynodon increased from 3.81 to 4.94, and the N limit gradually decreased, while the limit of P increased continuously. The efficiency of the coordinated utilization of N and P of the Indigofera Amblyantha Craib increased, which had a certain adaptability to changes in precipitation. The C/N and C/P in the soil first increased and then decreased, and reached the peak at the slope of 15 mm precipitation, while the N/P fluctuated around 0.35 overall. N was an important element restricting the growth of grass, while P was an important influencing element limiting the growth of shrubs. This also showed that soil C, N and P had a good promoting effect on plant growth, and the self-regulating nutrient utilization strategies of different growth forms of plants under different precipitation conditions differed. There was a coupling effect in the contents of C, N, P and their stoichiometric ratio in the soil–plant system, and stoichiometry and elastic ecological interactions jointly controlled the supply and demand of elements in the plants, but there was no consistent temporal pattern of nutrient ecological stoichiometric ratio in the plant–soil system during the recovery process, thus requiring further research and evaluation.

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Ecological stoichiometry characteristics of carbon, nitrogen, phosphorus, and potassium of different economic tree species in the karst frigid and arid area

Cited by 18 publications

References 0 publications

Does the fertile island effect in tamarisk nebkhas enhance in the northern Tarim Basin in the context of global warming?

Does the fertile island effect in tamarisk nebkhas enhance in the northern Tarim Basin in the context of global warming?

Wetland‐type conversion drives the C, N and P stoichiometry change of soil in river plain of lower of the Yellow River

Ecological Stoichiometric Changes and the Synergistic Restoration of Vegetation Concrete Restoration Systems under Different Precipitation Conditions

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