Assessment on the Effects of &lt;I&gt;Pinus sylvestris&lt;/I&gt; var. &lt;I&gt;mongolica&lt;/I&gt; Plantation on Microenvironment Improvement in the Horqin Sandy Land

Huang, Gang

doi:10.3724/sp.j.1148.2008.00212

Cited by 4 publications

(3 citation statements)

References 2 publications

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“…The ecological stoichiometric ratio of soil C, N and P is a key index to estimate soil quality [48]. Soil C:N and C:P are commonly used to evaluate the availability of soil N and P. Generally, the lower the C:N and C:P, the higher the content of soil available N and P [49]. In this study, the average values of C:N in GG, MG and EG were 8.91, 10.04 and 12.31, respectively.…”

Section: Soil C N and P Nutrient Content And Stoichiometric Ratiomentioning

confidence: 99%

Using Ecological Stoichimetric Characteristies to Inform Grassland Management in the Karst Desertification Area

et al. 2023

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C, N and P play an important indicator role in explaining the material cycles and elemental balances of living and non-living systems. In order to control karst rocky desertification, China has established a large number of artificial grasslands for the development of herbivorous animal husbandry, which has played an important role in ecological restoration and economic development. However, the effects of different use patterns on the ecological stoichiometry of the carbon (C), nitrogen (N) and phosphorus (P) of the grassland plant–soil–microorganism are not clear. In this study, the effects of grazing grassland (GG), mowing grassland (MG) and enclosed grassland (EG) on C, N and P and their ecological stoichiometry in the artificial grassland plant–soil–microbe were investigated in the karst desertification control area in Southern China. The results showed that (1) the C content was EG > GG > MG. The N content was GG > EG > MG, while the P content was MG > GG > EG. C:N, C:P and N:P were shown as EG > GG > MG. The plant N:P was more than 20, indicating a P deficiency and limitation, especially in EG. (2) The content of C and P in soil was EG > GG > MG. The N content was GG > EG > MG. The soil C:N showed EG > MG > GG, while C:P and N:P were shown as MG > GG > EG. The soil N:P ratios were all less than 14, indicating that all of them had an obvious N limitation. (3) Soil microbial biomass carbon (MBC) was GG > MG > EG. Soil microbial biomass nitrogen (MBN) was GG > EG > MG. Soil microbial biomass phosphorus (MBP) showed EG > GG > MG. MBC:MBN was MG > EG > GG. MBC:MBP was MG > EG > GG. MBN:MBP was GG > MG > EG. The MBN:MBP in GG and MG was greater than 9.6, which is P-limited, while the MBN:MBP in EG is less than 8.9, which is N-limited. (4) Plant C and N were significantly correlated with soil C and N, but plant P was significantly negatively correlated with soil P, while MBP was significantly positively correlated with soil TP. Soil microorganisms had the tendency to assimilate available P in GG and MG treatments, but the potential of releasing P from mineralized soil organic matter was higher in EG treatment. The results showed that the chemical properties and stoichiometric characteristics of the plant–soil–microorganism were significantly changed by different grassland-use methods, which provided scientific guidance for the management of C, N and P elements and the further optimization of soil microbial environment for artificial grassland in the karst rocky desertification area.

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Section: Soil C N and P Nutrient Content And Stoichiometric Ratiomentioning

confidence: 99%

Using Ecological Stoichimetric Characteristies to Inform Grassland Management in the Karst Desertification Area

et al. 2023

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“…Mongolian pine ( Pinus sylvestris var. mongolica ), a significant pine species indigenous to Asia, has been extensively cultivated in Liaoning, Inner Mongolia, Heilongjiang, and Hebei Provinces of China, due primarily to its rapid growth and exceptional adaptation to cold climates [ 1 ]. Since 2018, Diplodia tip blight, caused by Diplodia sapinea (Fr.)…”

Section: Introductionmentioning

confidence: 99%

Diversity, Community Structure, and Antagonism of Endophytic Fungi from Asymptomatic and Symptomatic Mongolian Pine Trees

Ren,

Wang,

You

2024

JoF

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Diplodia tip blight, caused by Diplodia sapinea (=Sphaeropsis sapinea), are widely distributed in Honghuaerji, Inner Mongolia, China, causing severe damage on natural Mongolian pine (Pinus sylvestris var. mongolica). D. sapinea is an endophyte that becomes pathogenic under conditions of drought, hail damage, or temperature-associated stress. The role of the endophytic community inhabiting different pine tissues in the expression of disease is still unknown. In this study, the diversity and community structure of endophytic fungi among asymptomatic and symptomatic Mongolian pine were detected using culture-based isolation and high-throughput sequencing (HTS), and the potential antagonistic endophytes against D. sapinea were also screened. The results indicated that 198 and 235 strains of endophytic fungi were isolated from different tissues of symptomatic and asymptomatic Mongolian pine, respectively. D. sapinea was the most common endophyte isolated from the current-year needles and shoots of symptomatic trees, and Diplodia was also the most common in the HTS data. There were no significant differences in the endophytic fungal species richness among asymptomatic and symptomatic trees, but there were differences observed within specific sampled tissues. The ANOSIM analysis confirmed that the endophytic fungi community structure significantly differed between sampling tissues among symptomatic and asymptomatic Mongolian pine. Furthermore, the antagonism study revealed Penicillium fructuariae-cellae with the ability to inhibit the growth of D. sapinea in vitro, and the potential performance of this fungus, acting as biological control agent, was evaluated under greenhouse. Our findings can pave the way to a better understanding of the interactions between D. sapinea, other endophytic fungi and their hosts, and provide helpful information for more efficient disease management strategies.

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“…The spatial and temporal variation of soil water content is an important subject in sandy land researches (Wang et al, 2006;Zhao et al, 2006). A lot of researches have focused on the characteristic and dynamic of soil water content and the response of soil water content under different land use and plantation in sandy land (Zhao et al, 2002;Chen et al, 2003;He et al, 2003Kang et al, 2007;Huang et al, 2008), and few on the response of soil water content to rainfall under shrubs in arid and semi-arid area (Zhao et al, 1992;Zuo et al, 2005;Hu et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Variation in soil water content to rainfall under <I>Caragana microphylla</I> shrub in Horqin Sandy Land

Wang¹,

Zou²,

Qü³

et al. 2010

Journal of Arid Land

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In order to investigate the spatio-temporal variability of soil water content to rainfall under Caragana microphylla shrub in Horqin Sandy Land, a plot of 25 m × 25 m, where there were 6 shrub canopies of C. microphylla, was sited for measuring soil water content at two soil layers of 0−20 cm (top layer) and 20−40 cm (lower layer). Soil water content was measured on the 1st, 5th, 10th and 15th day after a 42 mm rainfall in Naiman of Inner Mongolia. The results showed that soil water contents at both layers under C. microphylla shrub were gradually decreased after the rain. Soil water content at the top layer outside the shrub canopy was higher than that inside the shrub canopy within 5 days, and became similar inside and outside the shrub canopy on the 10th day after the 42 mm rainfall, and it was lower outside than that inside the shrub canopy on the 15th day. The soil water content at lower layer in the area without shrubs was higher than that under shrub canopy all along. All the measured values of soil water content can be fitted to a variogram model. There was significant autocorrelation of the values of soil water content between top layer and lower layer, except for the fourth measured values of soil water content at top layer. The range and spatial dependence of soil water content at top layer were lower than that at lower layer.

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Assessment on the Effects of <I>Pinus sylvestris</I> var. <I>mongolica</I> Plantation on Microenvironment Improvement in the Horqin Sandy Land

Cited by 4 publications

References 2 publications

Using Ecological Stoichimetric Characteristies to Inform Grassland Management in the Karst Desertification Area

Using Ecological Stoichimetric Characteristies to Inform Grassland Management in the Karst Desertification Area

Diversity, Community Structure, and Antagonism of Endophytic Fungi from Asymptomatic and Symptomatic Mongolian Pine Trees

Variation in soil water content to rainfall under <I>Caragana microphylla</I> shrub in Horqin Sandy Land

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