Effects of soil stoichiometry of the CaCO3/available phosphorus ratio on plant density in Artemisia ordosica communities

Zhao, Xue-Lai; He, Xingyuan; Xue, Peng; Zhang, Ning; Wu, Wei; Li, Rong; Ci, Hang; Jia, Xuefeng; Gao, Yubao; Zhao, Hao

doi:10.1007/s11434-011-4866-4

Cited by 9 publications

(5 citation statements)

References 30 publications

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“…Two other dominant species of dune slope were of the Artermisia genus. Plants of Artermisia genus showed increased growth and density in arid sandy desert with an increase in soil phosphorus (Zhao et al, 2012). Our study also showed a positive correlation of A. songorica and A. xerophytica with soil phosphorus in the 20cm depth (axis 2, Figure 4).…”

Section: Discussionsupporting

confidence: 66%

Distribution of plant species and species-soil relationship in the east central Gurbantunggut Desert, China

Li²,

Eneji

et al. 2014

J. Geogr. Sci.

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The distribution of plant species and relationships between species and soil factors in the east central part of Gurbantunggut Desert was studied to provide more insight into the flora and determine differences in vegetation across various parts of the desert. Two-way Cluster Analysis showed that the vegetation in the area could be divided into three groups, the first group was dominated by the shrub species, Ephedra przewalskii and the grass species, Carex physodes mainly in areas of flat grounds and gentle slopes; the second group was dominated by C. physodes, Artemisia songorica and A. xerophytica mainly on the slope of sand dunes and the third group was dominated by the shrub species, Haloxylon persicum mainly on the top of sand dunes. There was no difference in plant density between Groups 1 and 2 but there was a significant decrease in Group 3. Soil water under vegetation Group 3 was much lower than that in the other two groups at all soil depths. The EC, organic matter, total P and soluble Na, Ca and Mg varied very similarly with soil water. Canonical correspondence analysis (CCA) satisfactorily assessed the species-soil relations in the area. The distribution of plant species was strongly correlated with the soil factors of water content, organic matter, EC and nutrients. The variations in species occurrence explained by the three CCA axes were about 70%, indicating that some explanatory site variables may exist outside our studied parameters. Soil texture is suggested to be included in future studies to improve the explanation of CCA.

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Section: Discussionsupporting

confidence: 66%

Distribution of plant species and species-soil relationship in the east central Gurbantunggut Desert, China

Li²,

Eneji

et al. 2014

J. Geogr. Sci.

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“…In addition, high concentrations of iron (Fe) and aluminum (Al) in red soils will reduce the availability of P through the synthesis of Fe-P and Al-P [61,62]. Furthermore, karst ecosystems have an abundance of CaCO 3 , which results in relatively low P bioavailability [63].…”

Section: Nutrient Limitationmentioning

confidence: 99%

Ecological Stoichiometric Characteristics of Two Typical Plantations in the Karst Ecosystem of Southwestern China

Pang

Wang

et al. 2018

Forests

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Abstract:Reforestation has been widely adopted to restore soil fertility and ecosystem service function in the rocky desertification region of southwestern China. However, there has been limited research concerning the stoichiometry of carbon (C), nitrogen (N), and phosphorus (P) and nutrient resorption rate of plantations in karst ecosystems. In this study, we selected plantations of Pinus yunnanensis Franch. (PY) and Eucalyptus maideni F. Muell. (EM) in Yunnan Province. The C, N, and P concentrations and the C:N:P stoichiometry in different soil layers (0-10 cm, 10-20 cm, and 20-30 cm) were examined. The nutrient limitation and nutrient resorption efficiency were also analyzed. The leaf C and N concentrations in the PY plantation were higher than that in the EM plantation; the P concentration demonstrated the opposite trend, both in green and senesced leaves. Soil C, N, and P concentrations in the EM plantation were much greater than in the PY plantation at all three depths and decreased with the depth of the soil. In addition, the high ratios of C:P, N:P, C:Available P, and N:Available P in soil coupled with the ratios of N:P in leaves indicate that the EM plantation has a greater P deficiency than the PY plantation. In the EM plantation, the relatively low P concentrations in senesced leaves indicates efficient TP (Total phosphorus) resorption, which highlights that the high reuse proficiency of P could have favored moderating P limitation in the karst ecosystem. This research aids in understanding the stoichiometric characteristics that mediate forest properties, and provides a basis for management of vegetation in karst ecosystems.

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“…Therefore, the study on the A. ordosica shrub species is important for understanding the progress of vegetation restoration in this study area. Recent research on A. ordosica population dynamics mostly concentrated on natural recruitment [ 15 , 47 ], effects of habitat changes [ 15 , 48 , 49 ], spatial pattern [ 50 , 51 ], plant morphology and structural characteristics [ 52 ], soil moisture characteristics [ 53 , 54 ], and soil physicochemical properties [ 55 ]. However, the dynamics of the population structure and spatial pattern of the A. ordosica population in a restored desert grassland after removing livestock have not received enough attention.…”

Section: Introductionmentioning

confidence: 99%

Spatial Pattern and Population Structure of Artemisia ordosica Shrub in a Desert Grassland under Enclosure, Northwest China

Liu

Zhang

2018

IJERPH

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Enclosure is an effective practice for restoring and rehabilitating the degraded grassland ecosystem caused by overgrazing. Shrub species, which are dominant in most desert grasslands in arid and semiarid regions, have some beneficial ecological functions for grassland restoration. However, how the population structure and spatial pattern of the Artemisia ordosica shrub changes in a grassland ecosystem under enclosed practice is not well understood. This study, conducted in the Mu Us desert in northwest China, was designed to measure the A. ordosica population according to the chronosequence of enclosure (enclosure periods ranged from 5 years, 10 years, 15 years, and 25 years), contrasting this with an adjacent continuously grazed grassland. The results showed that the enclosed grasslands had a higher number of individuals of different age classes (seedling, adult, aging, and dead group) and greater population coverage, but shrubs had significant lower (p < 0.05) crown diameter and height in comparison with those in continuously grazed grassland. Further, enclosed grasslands had a significantly higher (p < 0.05) Shannon-Wiener index (H) and Evenness index (E), but a significantly lower (p < 0.05) Richness index (R) than continuously grazed grassland. The crown of A. ordosica showed a significant linear positive correlation with height in all plots across succession, indicating that it was feasible to analyze the age structure by crown. The crown-class distribution structure of the A. ordosica population approximated a Gaussian distribution model in all survey plots. Within the population, seedling and adult groups exhibited aggregated spatial distribution at small scales, while aging and dead A. ordosica groups showed random distribution at almost all scales in different plots. The seedling A. ordosica group showed a positive correlation with adults at small scales in all plots except in 10 years of enclosure. However, it showed independent correlation with aging and dead groups at almost all scales. In long-term enclosed plots, the mortality rate of the A. ordosica population increased, therefore assistance management practices, such as fertilization, mowing, interval grazing, and seasonal grazing, must be employed to maintain population stability after long-term enclosure. This study can improve understanding and clarify the effects of enclosures in the desert grasslands of northwest China.

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Effects of soil stoichiometry of the CaCO3/available phosphorus ratio on plant density in Artemisia ordosica communities

Cited by 9 publications

References 30 publications

Distribution of plant species and species-soil relationship in the east central Gurbantunggut Desert, China

Distribution of plant species and species-soil relationship in the east central Gurbantunggut Desert, China

Ecological Stoichiometric Characteristics of Two Typical Plantations in the Karst Ecosystem of Southwestern China

Spatial Pattern and Population Structure of Artemisia ordosica Shrub in a Desert Grassland under Enclosure, Northwest China

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