Gross nitrogen transformations in adjacent native and plantation forests of subtropical Australia

Burton, Joanne; Chen, Chengrong; Xu, Zhihong; Ghadiri, Hossein

doi:10.1016/j.soilbio.2006.08.011

Cited by 108 publications

(90 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…from the same basaltic parent material. As such, differences in SOM pools and chemical and biological properties among the sites are assumed to be the result of the land uses and forest management practices (Burton et al, 2007a).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Using light fraction and macroaggregate associated organic matters as early indicators for management-induced changes in soil chemical and biological properties in adjacent native and plantation forests of subtropical Australia

Chen

et al. 2008

Geoderma

Self Cite

View full text Add to dashboard Cite

Land use and management Forest Soil chemical and biological processes Soil physical structure causes differential accessibility of soil organic matter (SOM), including carbon (C) and nitrogen (N) pools, to decomposer organisms and is an important determinant of SOM storage. Physical fractionation method of SOM in conjunction with elemental as well as isotopic analyses (C, N, δ 13 C, δ 15 N) of those soil fractions are used in this study to determine the land use and management-induced changes of SOM and associated processes in three adjacent sites of native forest (NF), first (1R) and second rotation (2R, including tree planting row (2R-T) and windrow of harvest residues (2R-W)) of hoop pine plantations in southeast Queensland, Australia. The results suggest that there is a greater accumulation of C and N in the light fraction (LF) of NF site than that of plantation sites (1R and 2R), and the C and N losses following conversion from mixed species NF to the single-species plantation are attributed to the reduction in C and N stocks for all physical fractions separated by wet sieving. In contrast, the C and N losses induced by the rotation practices (e.g., between 1R and 2R-T) are attributed to the C and N decreases in the LF and macroaggregates (250-2000 µm) only. The C and N increases upon the residue management (e.g., between 2R-W and 2R-T) are primarily attributed to the C and N increases in the LF and macroaggregates as well. Coupled with 30 soil chemical and biological parameters obtained in our previous studies, further principal component and multivariable regression analyses were conducted and the results showed that both the LF and macroaggregates were highly related to the status of C and N pools, the processes of N transformation and soil respiration, and the diversity of microbial communities, and thus could serve as diagnostic SOM fractions responsible for the changes of soil properties and processes within the tested ecosystem induced by the land uses and management practices. Knowledge of the interactive relationships between aggregate classes within SOM and soil chemical and biological processes in this study represents a further step towards diagnostically measuring and understanding important soil C and N processes in response to the land use and management changes in the soil ecosystems such as forests in subtropical Australia.

show abstract

Section: Discussionmentioning

confidence: 99%

“…Details of the study area were provided by Chen et al (2004) and Burton et al (2007a). In brief, the climate is subtropical with a variable annual rainfall (range: 433-1110 mm) and a long-term mean rainfall of 816 mm per annum.…”

Section: Site Description and Sample Collectionmentioning

confidence: 99%

Using light fraction and macroaggregate associated organic matters as early indicators for management-induced changes in soil chemical and biological properties in adjacent native and plantation forests of subtropical Australia

Chen

et al. 2008

Geoderma

Self Cite

View full text Add to dashboard Cite

show abstract

“…The impact of land-use changes on the ecosystem processes depends mainly on plant species and associated management practices (e.g., Pan et al 2008Pan et al , 2009. It has been reported that land-use change from grassland to plantation forest enhanced the availability of soil P and other nutrients (e.g., Chen et al 2000;Chen et al 2003), while other studies suggested that land-use change from native forest to plantation forest decreased C and N availability (e.g., Chen et al 2004b;Burton et al 2007;Xu et al 2008). Shifts in C and nutrient availability and balance would affect soil microbial community composition and functioning (Chen et al 2004a, b;He et al 2005;Macdonald et al 2009).…”

Section: Land-use Changementioning

confidence: 99%

Forest ecosystem responses to environmental changes: the key regulatory role of biogeochemical cycling

Chen

2009

J Soils Sediments

Self Cite

View full text Add to dashboard Cite

“…Tree species also differ in the quality of leaf litter (e.g., C/N), which directly influences the quality and quantity of organic matter input (Templer et al 2003, Brüggemann et al 2005. Moreover, root litter is also species dependent and directly affects root exudation (Burton et al 2007). Accordingly, microbes receive organic matter of varying quality from different tree species (Templer et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Seasonal dynamics of soil respiration and nitrification in three subtropical plantations in southern China

Wang¹,

Cheng²,

Shi³

et al. 2016

iForest

View full text Add to dashboard Cite

Numerous studies have documented that soil respiration and nitrogen cycling show a distinct seasonal dependence regulated by environmental factors (e.g., soil temperature and soil water content). The mechanisms controlling the seasonal dependence of these two key ecosystem processes have rarely been linked to both soil microbial community and soil environmental factors. Here, we present results on the seasonal patterns of soil respiration and gross nitrification rates in three subtropical plantations of Pinus massoniana, Castanopsis hystrix and Erythrophleum fordii over a period of 11 months. Turnover rates were measured with the Barometric Process Separation technique (BaPS). We elucidated how soil respiration and gross nitrification are controlled by the soil microbial community and by soil environmental factors. Soil respiration and gross nitrification showed strong seasonal dynamics, although no significant differences were observed among plantations. The turnover rates were the highest during the wet season and the lowest during the dry season. Microbial biomass, total phospholipid fatty acids (PLFAs), fungal PLFAs and bacterial PLFAs peaked during the dry season. Both soil respiration and gross nitrification rates were positively correlated with soil temperature and soil water content. Microbial biomass decreased with increasing turnover rates. Our findings highlight that carbon and nitrogen turnover rates were mostly controlled by soil temperature and soil water content.

show abstract

Gross nitrogen transformations in adjacent native and plantation forests of subtropical Australia

Cited by 108 publications

References 37 publications

Using light fraction and macroaggregate associated organic matters as early indicators for management-induced changes in soil chemical and biological properties in adjacent native and plantation forests of subtropical Australia

Using light fraction and macroaggregate associated organic matters as early indicators for management-induced changes in soil chemical and biological properties in adjacent native and plantation forests of subtropical Australia

Forest ecosystem responses to environmental changes: the key regulatory role of biogeochemical cycling

Seasonal dynamics of soil respiration and nitrification in three subtropical plantations in southern China

Contact Info

Product

Resources

About