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Xiaoping Xin
National Hulunber Grassland Ecosystem Observation and Research Station, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China

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Journal article
Published: 24 September 2019 in Sustainability
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Grazing affects nutrient cycling processes in grasslands, but little is known by researchers about effects on the nutrient stoichiometry of plant–soil–microbe systems. In this study, the influence of grazing intensity (0, 0.23, 0.34, 0.46, 0.69, and 0.92 AU ha−1) on carbon (C), nitrogen (N) and phosphorus (P) and their stoichiometric ratios in plants, soil, and microbes was investigated in a Hulunber meadow steppe, Northeastern China. The C:N and C:P ratios of shoots decreased with grazing increased. Leaf N:P ratios

ACS Style

Juan Cao; Ruirui Yan; Xiaoyong Chen; Xu Wang; Qiang Yu; Yunlong Zhang; Chen Ning; Lulu Hou; Yongjuan Zhang; Xiaoping Xin. Grazing Affects the Ecological Stoichiometry of the Plant–Soil–Microbe System on the Hulunber Steppe, China. Sustainability 2019, 11, 5226 .

AMA Style

Juan Cao, Ruirui Yan, Xiaoyong Chen, Xu Wang, Qiang Yu, Yunlong Zhang, Chen Ning, Lulu Hou, Yongjuan Zhang, Xiaoping Xin. Grazing Affects the Ecological Stoichiometry of the Plant–Soil–Microbe System on the Hulunber Steppe, China. Sustainability. 2019; 11 (19):5226.

Chicago/Turabian Style

Juan Cao; Ruirui Yan; Xiaoyong Chen; Xu Wang; Qiang Yu; Yunlong Zhang; Chen Ning; Lulu Hou; Yongjuan Zhang; Xiaoping Xin. 2019. "Grazing Affects the Ecological Stoichiometry of the Plant–Soil–Microbe System on the Hulunber Steppe, China." Sustainability 11, no. 19: 5226.

Article
Published: 27 April 2018 in Journal of Arid Land
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The variation in soil organic carbon density (SOCD) has been widely documented at various spatial and temporal scales. However, an accurate method for examining the attribution of explanatory factors for change in SOCD is still lacking. This study aims to attribute and quantify the key climatic factors, anthropogenic activities, and soil properties associated with SOCD change in the native grasslands of Inner Mongolia, China, by comparing data between the 1960s and the 2010s. In 2007 and 2011, we resampled 142 soil profiles which were originally sampled during 1963–1964 in the native grasslands of Inner Mongolia. SOCD was determined in A horizon (eluvial horizon) of the soil. We selected the explanatory factors based on a random forest method, and explored the relationships between SOCD change and each of the explanatory factors using a linear mixed model. Our results indicated that the change in SOCD varied from the east to the west of Inner Mongolia, and SOCD was 18% lower in the 2010s than in the 1960s. The lower SOCD in the 2010s may primarily be attributed to the increasing in mean annual water surface evaporation, which explained approximately 10% and 50% of the total variation and explainable variation in the change in SOCD, respectively. The sand content of the soil is also a significant explanatory factor for the decrease in SOCD, which explained about 4% and 21% of the total variation and explainable variation in the change in SOCD, respectively. Furthermore, the collection of quantitative information on grazing frequency and duration may also help to improve our understanding of the anthropogenic factors that govern the change in SOCD.

ACS Style

Dongyan Jin; Phil J. Murray; Xiaoping Xin; Yifei Qin; Baorui Chen; Gele Qing; Zhao Zhang; Ruirui Yan. Attribution of explanatory factors for change in soil organic carbon density in the native grasslands of Inner Mongolia, China. Journal of Arid Land 2018, 10, 375 -387.

AMA Style

Dongyan Jin, Phil J. Murray, Xiaoping Xin, Yifei Qin, Baorui Chen, Gele Qing, Zhao Zhang, Ruirui Yan. Attribution of explanatory factors for change in soil organic carbon density in the native grasslands of Inner Mongolia, China. Journal of Arid Land. 2018; 10 (3):375-387.

Chicago/Turabian Style

Dongyan Jin; Phil J. Murray; Xiaoping Xin; Yifei Qin; Baorui Chen; Gele Qing; Zhao Zhang; Ruirui Yan. 2018. "Attribution of explanatory factors for change in soil organic carbon density in the native grasslands of Inner Mongolia, China." Journal of Arid Land 10, no. 3: 375-387.

Journal article
Published: 25 August 2017 in Scientific Reports
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Grazing is the primary land use in the Hulunber meadow steppe. However, the quantitative effects of grazing on ecosystem carbon dioxide (CO2) fluxes in this zone remain unclear. A controlled experiment was conducted from 2010 to 2014 to study the effects of six stocking rates on CO2 flux, and the results showed that there were significant differences in CO2 fluxes by year, treatment, and month. The effects of light and intermediate grazing remained relatively constant with grazing year, whereas the effects of heavy grazing increased substantially with grazing duration. CO2 flux significantly decreased with increasing grazing intensity and duration, and it was significantly positively correlated with rainfall, soil moisture (SM), the carbon to nitrogen ratio (C/N ratio), soil available phosphorus (SAP), soil NH4+-N, soil NO3−N, aboveground biomass (AGB), coverage, height, and litter and negatively correlated with air temperature, total soil N (TN) and microbial biomass N (MBN). A correspondence analysis showed that the main factors influencing changes in CO2 emissions under grazing were AGB, height, coverage, SM, NH4+-N and NO3−N. Increased rainfall and reduced grazing resulted in greater CO2 emissions. Our study provides important information to improve our understanding of the role of livestock grazing in GHG emissions.

ACS Style

R. R. Yan; H. J. Tang; S. H. Lv; D. Y. Jin; X. P. Xin; B. R. Chen; B. H. Zhang; Y. C. Yan; X. Wang; Philip J. Murray; G. X. Yang; L. J. Xu; L. H. Li; S. Zhao. Response of ecosystem CO2 fluxes to grazing intensities – a five-year experiment in the Hulunber meadow steppe of China. Scientific Reports 2017, 7, 9491 .

AMA Style

R. R. Yan, H. J. Tang, S. H. Lv, D. Y. Jin, X. P. Xin, B. R. Chen, B. H. Zhang, Y. C. Yan, X. Wang, Philip J. Murray, G. X. Yang, L. J. Xu, L. H. Li, S. Zhao. Response of ecosystem CO2 fluxes to grazing intensities – a five-year experiment in the Hulunber meadow steppe of China. Scientific Reports. 2017; 7 (1):9491.

Chicago/Turabian Style

R. R. Yan; H. J. Tang; S. H. Lv; D. Y. Jin; X. P. Xin; B. R. Chen; B. H. Zhang; Y. C. Yan; X. Wang; Philip J. Murray; G. X. Yang; L. J. Xu; L. H. Li; S. Zhao. 2017. "Response of ecosystem CO2 fluxes to grazing intensities – a five-year experiment in the Hulunber meadow steppe of China." Scientific Reports 7, no. 1: 9491.

Journal article
Published: 31 December 2011 in CATENA
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Wind erosion and sand storms are common phenomena in semiarid steppes of northern China and could have important impact on soil nutrient balances. Vegetation coverage is one of the key factors influencing wind erosion and aeolian dust accumulation. We conducted a field experiment to investigate the effects of vegetation coverage on airborne dust accumulation and evaluated effects of dust input on the contribution of nutrients to vegetation-mulched fields. Five vegetation coverage treatments (15%, 35%, 55%, 75% and 95%) were constructed, with 0% coverage as a control. Vegetation coverage significantly affected dust accumulation in degenerated semiarid grasslands. The amounts of dust trapped by the increasing coverages were 1.7, 1.8, 2.0, 2.1 and 2.1 times of that by the control plot, respectively. The total accumulations reached a maximum of 2.5 g m−2 day−1 at 75% coverage and remained stable with further increasing vegetation coverage. The particles in the dust trapped by treatment without vegetation coverage were significantly coarser than those by treatments with vegetation. In addition, the dust trapped by treatments with vegetation contained more organic carbon, nitrogen and phosphorus content than that by the control plot. This finding indicates that areas with higher vegetation coverage can obtain more nutrients by trapping airborne dust in semiarid steppes.

ACS Style

Yuchun Yan; Xingliang Xu; Xiaoping Xin; Guixia Yang; Xu Wang; Ruirui Yan; Baorui Chen. Effect of vegetation coverage on aeolian dust accumulation in a semiarid steppe of northern China. CATENA 2011, 87, 351 -356.

AMA Style

Yuchun Yan, Xingliang Xu, Xiaoping Xin, Guixia Yang, Xu Wang, Ruirui Yan, Baorui Chen. Effect of vegetation coverage on aeolian dust accumulation in a semiarid steppe of northern China. CATENA. 2011; 87 (3):351-356.

Chicago/Turabian Style

Yuchun Yan; Xingliang Xu; Xiaoping Xin; Guixia Yang; Xu Wang; Ruirui Yan; Baorui Chen. 2011. "Effect of vegetation coverage on aeolian dust accumulation in a semiarid steppe of northern China." CATENA 87, no. 3: 351-356.