Response of soil properties and C dynamics to land-use change in the west of Loess Plateau (SCI)

CORC > 寒区旱区环境与工程研究所 > 中科院寒区旱区环境与工程研究所（未分类） > 期刊论文

	Response of soil properties and C dynamics to land-use change in the west of Loess Plateau (SCI)
	Zhang L. H.; Zhao R. F.; Xie Z. K.
刊名	Soil Science and Plant Nutrition
	2014
卷号	60 期号:4 页码:586-597
英文摘要	Land-use change (LUC) is widely considered a major factor that affects soil organic carbon (SOC) sequestration. The impacts of four LUC types on soil properties, SOC, particulate organic carbon (POC) and labile organic carbon (LOC) at the 0-100 cm depth were examined in the west of Loess Plateau, northwest China. Bulk density at the 20-40 cm depth increased significantly after native grassland conversion to cropland, while artificial grassland establishment and abandonment on former cropland caused reverse change. Soil water content in the profile increased 60-230% after cultivation and decreased 32-49% after abandonment (p < 0.01). The particle size distribution also showed a response to LUC. Only artificial grassland establishment caused an SOC sink of 32% at the 0-10 cm depth as well as two labile fractions. SOC tended to increase after cultivation and after abandonment, with 6% and 20% at soil surface, respectively. There were increasing trends in POC and LOC. After afforestation on former native grassland, SOC tended to decrease (23%) at the 0-10 cm depth while POC and LOC tended to increase (33% and 6%, respectively). Principal component analysis was successful in separating LUC through soil property parameters. Carbon sequestration is largely ascribed to increased below-ground production and tillage elimination after perennial alfalfa (Medicago sativa L.) plantation. Irrigation and fertilization activities contribute to SOC accumulation after cultivation to some extent. The self-restoration dynamic depending on time since abandonment is important to SOC change. A lower proportion of stabilized carbon results in a slow rate of SOC accumulation after afforestation. It is necessary to investigate the long-term dynamic after LUC.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.casnw.net/handle/362004/27584]
专题	寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文
推荐引用方式 GB/T 7714	Zhang L. H.,Zhao R. F.,Xie Z. K.. Response of soil properties and C dynamics to land-use change in the west of Loess Plateau (SCI)[J]. Soil Science and Plant Nutrition,2014,60(4):586-597.
APA	Zhang L. H.,Zhao R. F.,&Xie Z. K..(2014).Response of soil properties and C dynamics to land-use change in the west of Loess Plateau (SCI).Soil Science and Plant Nutrition,60(4),586-597.
MLA	Zhang L. H.,et al."Response of soil properties and C dynamics to land-use change in the west of Loess Plateau (SCI)".Soil Science and Plant Nutrition 60.4(2014):586-597.