气候变化领域集成服务门户(CCPortal): Soil carbon and nitrogen pools, their depth distribution and stocks following plantation establishment in south east Queensland, Australia

CCPortal

DOI	10.1016/j.foreco.2019.117708
	Soil carbon and nitrogen pools, their depth distribution and stocks following plantation establishment in south east Queensland, Australia
	Wehr J.B.; Lewis T.; Dalal R.C.; Menzies N.W.; Verstraten L.; Swift S.; Bryant P.; Tindale N.; Smith T.E.
发表日期	2020
ISSN	0378-1127
卷号	457
英文摘要	Changes in land use affect the soil organic carbon (SOC) stocks and pools. This is currently of great interest as soils are a major pool of carbon in the biosphere and can sequester atmospheric carbon. This study investigated the effect of pasture conversions into reforestation or cropping land on SOC, humic organic C (HOC), particulate organic C (POC) and resistant organic C (ROC) stocks, and soil nitrogen, to 0.5 m depth using mid infrared spectroscopy and combustion analyses. The ten study sites in south east Queensland, Australia were cleared of native vegetation to pasture decades earlier and were more recently (6–19 years ago) converted to either forest plantations (eucalypts) or cropping land. The SOC was significantly affected by land use and site location. Conversion of pasture to forest plantation had no significant effect on SOC compared to pasture up to 19 years since reforestation, but SOC increased slightly with plantation age at a rate of 3.03 t ha−1 per year. Conversion of pasture to cropping land significantly decreased SOC. The stocks of SOC ranged from 47.0 to 107.6 t ha−1. The HOC pool contributed the most towards the total SOC, and ranged from 17.7 to 67.8 t ha−1 across all sites. The POC pool ranged from 2.1 to 17.8 t ha−1 and the ROC pool varied between 5.3 and 22.3 t ha−1. The total SOC stock determined by MIR was closely related to SOC determined by dry combustion analysis. Soil N was significantly affected by land use and location, but trends were not consistent. On pasture sites, total N was higher likely due to fertiliser applications and total N ranged between 3.7 and 15.0 t ha−1 across sites. In summary, conversion of pasture to forest plantation had no significant effect on SOC stocks and different soil carbon pools over 19 years in the subtropical climate of south east Queensland. © 2019 Elsevier B.V.
关键词	Combustion Infrared devices Infrared spectroscopy Lakes Land use Nitrogen Reforestation Soils Combustion analysis Cropping Depth distribution Mid-infrared spectroscopy Pasture Plantation establishment Soil organic carbon Subtropical climates Organic carbon biosphere combustion fertilizer infrared spectroscopy land use change nitrogen pasture reforestation soil carbon soil organic matter vertical distribution Combustion Infrared Spectroscopy Lakes Land Use Nitrogen Reforestation Australia Queensland
语种	英语
来源机构	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/133116
推荐引用方式 GB/T 7714	Wehr J.B.,Lewis T.,Dalal R.C.,et al. Soil carbon and nitrogen pools, their depth distribution and stocks following plantation establishment in south east Queensland, Australia[J]. Forest Ecology and Management,2020,457.
APA	Wehr J.B..,Lewis T..,Dalal R.C..,Menzies N.W..,Verstraten L..,...&Smith T.E..(2020).Soil carbon and nitrogen pools, their depth distribution and stocks following plantation establishment in south east Queensland, Australia.,457.
MLA	Wehr J.B.,et al."Soil carbon and nitrogen pools, their depth distribution and stocks following plantation establishment in south east Queensland, Australia".457(2020).