Passive and active ecological restoration strategies for abandoned farmland leads to shifts in potential soil nitrogen loss by denitrification and soil denitrifying microbes
Wang, Honglei1; Shu, Duntao2; Liu, Dong3; Liu, Shuang2; Den, Na1; An, Shaoshan1
Corresponding AuthorAn, Shaoshan(shan@ms.iswc.ac.cn)
2020-01-23
Source PublicationLAND DEGRADATION & DEVELOPMENT
ISSN1085-3278
Pages13
AbstractEcological restorations of abandoned farmland have been performed in degraded ecosystems with the goal of increasing ecosystem sustainability. The environmental benefits of ecological restoration can at least be partially neutralized by enhanced nitrogen (N) loss and potential nitrous oxide (N2O) emissions via denitrification. However, few studies have focussed on comparative analysis of the contributions of ecological restoration strategies to soil denitrifying microbes, particularly in arid and semiarid degraded ecosystems, where N is often the limiting nutrient. In this study, artificial afforestation (artificial forest sites) and natural revegetation (grassland sites) of abandoned farmland have an enhanced effect on reducing potential denitrification rates (PDR) compared with farmland sites and orchard sites, leading to lower N losses and potential N2O emissions. Combined analyses indicated that the greatest differences in microbial abundance, species richness, and diversity were observed among different ecological restoration strategies. The abundance, richness, and diversities of denitrifying microbes (nirS, nirK, and nosZ genes) were decreased by natural revegetation and artificial afforestation, leading to attenuated denitrifying activity responsible for the reduced PDR. Notably, the abundance and diversity of denitrifying microbes were dominant variables that explained the changes in PDR (up to 0.96). Overall, our results contribute to a better understanding of the feedback of denitrifying microorganisms to ecological restoration strategies and how these microorganisms collaboratively contribute to N loss and potential N2O emissions in arid and semiarid degraded ecosystems.
Keywordabandoned farmland degraded ecosystem denitrification rate denitrifying microbes ecological restoration
DOI10.1002/ldr.3523
Indexed BySCI ; SCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Agriculture
WOS SubjectEnvironmental Sciences ; Soil Science
WOS IDWOS:000508901800001
Citation statistics
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/70501
Collection中国科学院东亚植物多样性与生物地理学重点实验室
Corresponding AuthorAn, Shaoshan
Affiliation1.Northwest A&F Univ, State Key Lab Soil Eros & Dry Land Farming Loess, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China
2.Northwest A&F Univ, State Key Lab Crop Stress Biol Arid Areas, Shaanxi Key Lab Agr & Environm Microbiol, Coll Life Sci, Yangling, Shaanxi, Peoples R China
3.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming, Yunnan, Peoples R China
Recommended Citation
GB/T 7714
Wang, Honglei,Shu, Duntao,Liu, Dong,et al. Passive and active ecological restoration strategies for abandoned farmland leads to shifts in potential soil nitrogen loss by denitrification and soil denitrifying microbes[J]. LAND DEGRADATION & DEVELOPMENT,2020:13.
APA Wang, Honglei,Shu, Duntao,Liu, Dong,Liu, Shuang,Den, Na,&An, Shaoshan.(2020).Passive and active ecological restoration strategies for abandoned farmland leads to shifts in potential soil nitrogen loss by denitrification and soil denitrifying microbes.LAND DEGRADATION & DEVELOPMENT,13.
MLA Wang, Honglei,et al."Passive and active ecological restoration strategies for abandoned farmland leads to shifts in potential soil nitrogen loss by denitrification and soil denitrifying microbes".LAND DEGRADATION & DEVELOPMENT (2020):13.
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