Reforestation and slope-position effects on nitrogen, phosphorus pools, and carbon stability of various soil aggregates in a red soil hilly land of subtropical China
Zou, LQ; Chen, FS; Duncan, DS; Fang, XM; Wang, HM
2015
Source PublicationCANADIAN JOURNAL OF FOREST RESEARCH
ISSN0045-5067
Volume45Issue:1Pages:26-35
AbstractThe impact of slope position on forest restoration processes may dominate the interaction among topsoil aggregates, nutrients, and organic carbon (C) stability following reforestation on degraded hilly land. Six paired plots of shrubland and Masson pine (Pinus massoniana Lamb.) plantation reforested on shrubland were selected at different positions along a 25 degrees slope in subtropical China. Soil and ecosystem nitrogen (N), phosphorus (P), and organic C stocks were quantified using a combination of excavation, harvest, and modeling methods. Carbon stability in differently sized soil aggregates was measured using dry sieving and closed-jar alkali-absorption methods. Reforestation increased total ecosystem C, N, and P stocks, but did not alter soil C and P stocks, and decreased N stocks at 0-75 cm soil depth by 18%. The shift from shrubland to forests increased organic C stability for various soil aggregates, particularly with a mean increase of 34% and 30% at lower and middle slope positions, respectively. The slope-position effect was largely attributable to the increased mean mass diameter of soil aggregates and the reduced organic C mineralization potential in larger soil aggregates relative to smaller soil aggregates. Soil aggregates had more stable organic C in forests than in shrubland due to increase in the carbon to nitrogen (C/N) and carbon to phosphorus (C/P) ratios with reforestation. Slope position influenced restoration effectiveness in the red soil hilly region.
SubtypeJournal
Keywordbiogeochemistry ecosystem function land-use change organic carbon mineralization soil property
Subject AreaForestry
WOS Subject ExtendedForestry
WOS KeywordECOSYSTEM CARBON ; BIOMASS CARBON ; FOREST ; SEQUESTRATION ; RESTORATION ; AFFORESTATION ; DEGRADATION ; STORAGE
Indexed BySCI
Language英语
WOS IDWOS:000347297500004
PublisherCANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44474
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Zou, LQ,Chen, FS,Duncan, DS,et al. Reforestation and slope-position effects on nitrogen, phosphorus pools, and carbon stability of various soil aggregates in a red soil hilly land of subtropical China[J]. CANADIAN JOURNAL OF FOREST RESEARCH,2015,45(1):26-35.
APA Zou, LQ,Chen, FS,Duncan, DS,Fang, XM,&Wang, HM.(2015).Reforestation and slope-position effects on nitrogen, phosphorus pools, and carbon stability of various soil aggregates in a red soil hilly land of subtropical China.CANADIAN JOURNAL OF FOREST RESEARCH,45(1),26-35.
MLA Zou, LQ,et al."Reforestation and slope-position effects on nitrogen, phosphorus pools, and carbon stability of various soil aggregates in a red soil hilly land of subtropical China".CANADIAN JOURNAL OF FOREST RESEARCH 45.1(2015):26-35.
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