Tree species and recovery time drives soil restoration after mining: A chronosequence study
Kim, Songho1,2; Zang, Huadong3; Mortimer, Peter1,4; Shi, Lingling1,3,4; Li, Yunju5; Xu, Jianchu1,4; Ostermann, Anne1,4
2018-06-01
发表期刊LAND DEGRADATION & DEVELOPMENT
ISSN1085-3278
卷号29期号:6页码:1738-1747
摘要Open-pit mining activities for metals and minerals have impacted vast areas of the Earth's surface and left behind highly disturbed and degraded landscapes. However, our understanding of tree species and recovery time on the restoration of biotic and abiotic soil properties remains incomplete. Topsoil (0-15cm) was collected from plantations of 4 tree species: alder, acacia, pine, and cypress. A chronosequence of restoration was selected to assess the effect of recovery time: vegetation-free postmining land (unrestored control), 5-10years (young plantation), and 20-25years (old plantation). The soil physicochemical characteristics and phospholipid fatty acids were analysed. After 20years of restoration, the soil organic carbon (SOC) concentration increased, on average, from 1.4% to 4.7% for alder, cypress, and acacia. However, SOC was similar under pine plantations in unrestored control and at the late stage of restoration. The restoration of soil total nitrogen was faster than the SOC pools for all tree species investigated. Compared with that in the unrestored control, the total microbial biomass increased by 74% after 20-25years of restoration. A similar increase was observed for bacterial biomass. The studied sites partly exhibited residues of trace elements that exceeded Chinese environmental quality standards (Cd, As, Cu, and Cr). However, only Cu affected the soil community; arbuscular mycorrhizal biomass decreased with an increase in Cu concentration. In conclusion, the recovery time, rather than the tree species, was the main determinant in the alteration of key soil physicochemical parameters in the restoration of phosphate-mining-degraded landscapes, at least during the first 20-25years.
关键词Heavy Metals Restoration Age Soil Microbial Community Soil Restoration Trees
DOI10.1002/ldr.2951
语种英语
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文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/61371
专题中国科学院东亚植物多样性与生物地理学重点实验室
作者单位1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ Gottingen, Dept Agr Soil Sci, Busgenweg 2, D-37077 Gottingen, Germany
4.World Agroforestry Ctr, Kunming 650201, Yunnan, Peoples R China
5.Yunnan Phosphate Chem Grp Co Ltd, State Phosphorus Resource Dev & Utilizat Engn Tec, Kunming, Yunnan, Peoples R China
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GB/T 7714
Kim, Songho,Zang, Huadong,Mortimer, Peter,et al. Tree species and recovery time drives soil restoration after mining: A chronosequence study[J]. LAND DEGRADATION & DEVELOPMENT,2018,29(6):1738-1747.
APA Kim, Songho.,Zang, Huadong.,Mortimer, Peter.,Shi, Lingling.,Li, Yunju.,...&Ostermann, Anne.(2018).Tree species and recovery time drives soil restoration after mining: A chronosequence study.LAND DEGRADATION & DEVELOPMENT,29(6),1738-1747.
MLA Kim, Songho,et al."Tree species and recovery time drives soil restoration after mining: A chronosequence study".LAND DEGRADATION & DEVELOPMENT 29.6(2018):1738-1747.
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