Soil C, N, P and K stoichiometry affected by vegetation restoration patterns in the alpine region of the Loess Plateau, Northwest China

Liu, Ruosha; Wang, Dongmei

doi:10.1371/journal.pone.0241859

Cited by 14 publications

(10 citation statements)

References 60 publications

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“…Similar results had been obtained for the Yellow River Wetland in Baotou [19], Horqin Sandy Land [24], and Chongqing Mountain [57]. In this study, soil pH was only significantly correlated with R NP , R NK , and R PK , which was inconsistent with the research conducted in paddy fields [58] and in the alpine region of the Loess Plateau [59]; however, fertilization caused soil stoichiometry in farmland to be greatly affected by soil pH [60]. This may be related to the land type, geographical environment, and research scale in the study area, so that the conclusions drawn have regional limitations.…”

Section: Effects Of Environmental Factors On the Eco-stoichiometry Of...contrasting

confidence: 53%

Spatial Distribution Characteristics of Soil C:N:P:K Eco-Stoichiometry of Farmland and Grassland in the Agro-Pastoral Ecotone in Inner Mongolia, China

Zhang,

Liu,

Han

et al. 2024

Agronomy

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Ecological stoichiometry (ES) is an important index that reflects the balance of various elements in ecological processes. Therefore, it is of great significance to understand the soil nutrient cycle to clarify the environmental control of soil carbon (C), nitrogen (N), phosphorus (P), and potassium (K). In this study, we analyzed the spatial distribution of soil C, N, P, and K contents and the C:N:P:K stoichiometric characteristics of 0–20 cm and 20–40 cm of farmland and grassland in four agro-pastoral areas in Inner Mongolia. Spearman correlation was used to analyze the effects of environmental factors on the soil C:N:P:K stoichiometric relationship. The results showed that there was no fixed Redfield ratio for the soil stoichiometric relationship of farmland and grassland in Inner Mongolia, and the values were 15:2:1:9 to 145:10:1:26 and 25:1:1:29 to 228:15:1:65, respectively. The stoichiometric relationships between farmland and grassland were consistent with the law of geographical and spatial heterogeneity. The ratios of C:N, C:P, C:K, N:P, and N:K showed an N distribution from west to east, while the ratio of P:K showed a V distribution. The stoichiometric relationships in grassland soil were mainly affected by soil organic carbon and total nitrogen content, while those in farmland were mainly affected by total nitrogen and total phosphorus content. The annual mean precipitation has a significant effect on stoichiometric relationships in farmland, while the annual mean temperature has a more significant effect on grassland. In conclusion, the spatial distribution difference in the soil stoichiometric relationship in the agro-pastoral ecotone of Inner Mongolia was more significant than the difference in the land use pattern. The influences of annual mean temperature and annual mean precipitation on soil ecological stoichiometry were in accordance with the geographical spatial similarity law. Compared with grassland, the stoichiometric relationship of farmland soil was greatly affected by fertilization, and farmland in this region was mainly limited by carbon and nitrogen. Thus, field management should be carried out according to local conditions. This study is of great significance as it promotes the rational utilization of land resources and the sustainable development of agriculture.

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Section: Effects Of Environmental Factors On the Eco-stoichiometry Of...contrasting

confidence: 53%

Spatial Distribution Characteristics of Soil C:N:P:K Eco-Stoichiometry of Farmland and Grassland in the Agro-Pastoral Ecotone in Inner Mongolia, China

Zhang,

Liu,

Han

et al. 2024

Agronomy

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“…Soil nutrients differ significantly across land-use types. , and Liu and Wang., 2020, for example, investigated alpine regions such as the Qinghai-Tibet Plateau and the Loess Plateau and discovered that C and N contents, C:P, and N:P were higher in forestland than in grassland and farmland, and pH was lower in forestland than in grassland and farmland [15,16]. Liu et al, 2017, found that P content, C:N, C:P, and N:P were lower in grassland soils of the Yili River Valley in Xinjiang than in shrubland soils [17].…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Soil Nutrients and Their Ecological Stoichiometry in Different Land Use Types in the Nianchu River Basin

Liu

Lü

et al. 2022

Land

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Land use types can cause changes in soil chemical characteristics, such as altering soil C, N, and P contents and distribution. The aim of this study was to investigate the status of soil C, N, P and other nutrient contents and their stoichiometric ratios in the terrestrial ecosystem of Nianchu River Basin, Tibet. A total of 102 sample plots with 306 soil samples and 102 plant samples were investigated in August 2021 along the Nianchu River basin by selecting four land-use types: grassland, shrubland, forestland, and farmland. The soil’s basic physical and chemical properties (soil organic matter (SOM), total nitrogen (TN), total phosphorus (TP), alkaline nitrogen (AN), available phosphorus (AP), pH, and soil particle composition) were examined at each sampling point, and the stoichiometric characteristics of C, N, and P of the soils were analyzed using one-way analysis of variance (ANOVAs). The results revealed that the C and N contents of shrubland were significantly lower than those of grassland, forestland, and farmland, with farmland having the highest P content. For all land types, C:N increased with increasing soil depth, while C:P and N:P decreased with increasing soil depth. PCA and RDA analyses revealed that soil texture and pH had an impact on soil C, N, and P contents, as well as stoichiometric ratios.

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“…Except for the P content in leaves and roots of H. ammodendron , there was no significant correlation between soil N:P and N, P ecological stoichiometry in different organs of H. ammodendron , indicating that soil nutrient stoichiometry had little direct effect on the organs of H. ammodendron , which may be due to the fact thatH. ammodendron was limited by both water and nutrient elements, and formed unique ecological stoichiometry and physiological and ecological habits after long-term evolution (Liu & Wang, 2020). Soil pH affects the solubility of mineral salts, which in turn affects the effectiveness of soil nutrients (Bell et al, 2014).…”

Section: H Ammodendronmentioning

confidence: 91%

Ecological stoichiometric characteristics of nitrogen and phosphorus in leaves, stems and roots of Haloxylon ammodendron in southern Gurbantunggut Desert and their relationship with soil factors

Lian¹,

Du²,

Luo

et al. 2023

Preprint

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In order to explore the stoichiometric characteristics of nitrogen (N) and phosphorus (P) of Haloxylon ammodendron on the south edge of Gurbantungut Desert, and to reveal the adaptability of desert plants to nutrient utilization in barren habitats, this study took the south edge of Gurbantungut Desert in Xinjiang as a typical area. The contents of N and P in leaves, stems and roots of H. ammodendron were measured and analyzed, and the correlation between the ecological stoichiometry of N and P in organs and soil factors was discussed, as well as the influence of the samples and organs. The results showed as follows: (1) There were significant differences in N content, P content and N:P among different organs of H. ammodendron, and the trend of each index was roughly the same. The general trend was higher in leaves, followed by stems and roots. (2) Correlation analysis showed that N content in all organs of H. ammodendron was positively correlated with soil total nitrogen. P content in leaves and roots was significantly positively correlated with soil total P, while P content in stems was significantly negatively correlated with soil total P. P content in all organs was negatively correlated with soil N:P. The contents of N, P and N:P in different organs were negatively correlated with soil pH and electrical conductivity. (3) General linear model analysis showed that organs had great influence on N content, P content and N:P of H. ammodendron.

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Soil C, N, P and K stoichiometry affected by vegetation restoration patterns in the alpine region of the Loess Plateau, Northwest China

Cited by 14 publications

References 60 publications

Spatial Distribution Characteristics of Soil C:N:P:K Eco-Stoichiometry of Farmland and Grassland in the Agro-Pastoral Ecotone in Inner Mongolia, China

Spatial Distribution Characteristics of Soil C:N:P:K Eco-Stoichiometry of Farmland and Grassland in the Agro-Pastoral Ecotone in Inner Mongolia, China

Characteristics of Soil Nutrients and Their Ecological Stoichiometry in Different Land Use Types in the Nianchu River Basin

Ecological stoichiometric characteristics of nitrogen and phosphorus in leaves, stems and roots of Haloxylon ammodendron in southern Gurbantunggut Desert and their relationship with soil factors

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