Mongolian pine plantations enhance soil physico-chemical properties and carbon and nitrogen capacities in semi-arid degraded sandy land in China

Li, Yuqiang; Awada, Tala; Zhou, Xinhua; Shang, Wen; Chen, Yinping; Zuo, Xiaoan; Wang, Shaokun; Liu, Xinping; Feng, Jing

doi:10.1016/j.apsoil.2012.01.007

Cited by 54 publications

(39 citation statements)

References 51 publications

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“…Similarly, the increases of SOC concentration in the LF following cropland afforestation were also observed by Laik et al [41]. Furthermore, Li et al [35] found that afforestation with Mongolian pine on active sand dunes resulted in an increase of light fraction C concentration in Keerqin Sandy Lands. There was a significant positive relationship between soil Δ C stocks in LF and BA, indicating the gradual increases of SOC sequestration into the LF with increasing BA.…”

Section: Discussionsupporting

confidence: 55%

Dynamics and Sources of Soil Organic C Following Afforestation of Croplands with Poplar in a Semi-Arid Region in Northeast China

Zeng

2014

PLoS ONE

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Afforestation of former croplands has been proposed as a promising way to mitigate rising atmospheric CO2 concentration in view of the commitment to the Kyoto Protocol. Central to this C sequestration is the dynamics of soil organic C (SOC) storage and stability with the development of afforested plantations. Our previous study showed that SOC storage was not changed after afforestation except for the 0–10 cm layer in a semi-arid region of Keerqin Sandy Lands, northeast China. In this study, soil organic C was further separated into light and heavy fractions using the density fractionation method, and their organic C concentration and 13C signature were analyzed to investigate the turnover of old vs. new SOC in the afforested soils. Surface layer (0–10 cm) soil samples were collected from 14 paired plots of poplar (Populus × xiaozhuanica W. Y. Hsu & Liang) plantations with different stand basal areas (the sum of the cross-sectional area of all live trees in a stand), ranging from 0.2 to 32.6 m2 ha−1, and reference maize (Zea mays L.) croplands at the same sites as our previous study. Soil ΔC stocks (ΔC refers to the difference in SOC content between a poplar plantation and the paired cropland) in bulk soil and light fraction were positively correlated with stand basal area (R 2 = 0.48, p<0.01 and R 2 = 0.40, p = 0.02, respectively), but not for the heavy fraction. SOCcrop (SOC derived from crops) contents in the light and heavy fractions in poplar plantations were significantly lower as compared with SOC contents in croplands, but tree-derived C in bulk soil, light and heavy fraction pools increased gradually with increasing stand basal area after afforestation. Our study indicated that cropland afforestation could sequester new C derived from trees into surface mineral soil, but did not enhance the stability of SOC due to a fast turnover of SOC in this semi-arid region.

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Section: Discussionsupporting

confidence: 55%

Dynamics and Sources of Soil Organic C Following Afforestation of Croplands with Poplar in a Semi-Arid Region in Northeast China

Zeng

2014

PLoS ONE

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“…Our previous work on J. virginiana in the Sandhills of Nebraska has shown that J. virginiana trees compete for soil moisture with grasses in top layers when water is available during spring and early summer, and shift water uptake to deeper layers with decrease in surface moisture (Eggemeyer et al 2009, Awada et al 2013. In addition, the shift in allocation of biomass in trees associated C and N pools to above ground can alter the biogeochemical cycles and impact nutrient availability (Li et al 2012). Litter decomposition of J. virginiana is much slower than that of grassland herbaceous plants because of its chemical composition (Mellor et al 2013 (Fig.…”

Section: Discussionmentioning

confidence: 99%

Ecophysiological responses of native invasive woody Juniperus virginiana L. to resource availability and stand characteristics in the semiarid grasslands of the Nebraska Sandhills

Msanne¹,

Awada²,

Bryan³

et al. 2017

Photosynt.

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Vegetation in grasslands is changing at an unprecedented rate. In the Nebraska Sandhills, this shift is attributed in part to encroachment of the woody species Juniperus virginiana. We investigated changes in resource availability and their N, and N content, compared to grasslands. Water potential was higher in trees in grasslands compared to dense stand. J. virginiana in dense stand exhibited similar trends to trees in grasslands for net photosynthetic rate (P N ), stomatal conductance, transpiration, maximum photochemical efficiency of PSII, maximum carboxylation velocity, and maximum rate of electron transport. P N peaked early summer and declined in the fall, with trees in open grasslands lagging behind those in dense stand. Plasticity of this species may place it at a competitive advantage in the Sandhills, further altering grasslands vegetation and ecosystem processes.

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“…Water scarcity is becoming the important determinant problem in agricultural crop production in arid and semi‐arid areas . Furthermore, continuous soil degradation and desertification, which are due both to natural factors of climate change and to damaging human disturbances through arbitrary and inappropriate land use and management, aggravate the situation of water shortage in these areas . Soil amendments have been widely used for crops and ornamental plants to mitigate the damage caused by water shortage in arid and semi‐arid areas .…”

Section: Introductionmentioning

confidence: 99%

Effect of synthetic and natural water‐absorbing soil amendments on photosynthesis characteristics and tuber nutritional quality of potato in a semi‐arid region

Zhang

McLaughlin

et al. 2015

J Sci Food Agric

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Mongolian pine plantations enhance soil physico-chemical properties and carbon and nitrogen capacities in semi-arid degraded sandy land in China

Cited by 54 publications

References 51 publications

Dynamics and Sources of Soil Organic C Following Afforestation of Croplands with Poplar in a Semi-Arid Region in Northeast China

Dynamics and Sources of Soil Organic C Following Afforestation of Croplands with Poplar in a Semi-Arid Region in Northeast China

Ecophysiological responses of native invasive woody Juniperus virginiana L. to resource availability and stand characteristics in the semiarid grasslands of the Nebraska Sandhills

Effect of synthetic and natural water‐absorbing soil amendments on photosynthesis characteristics and tuber nutritional quality of potato in a semi‐arid region

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