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Comparing watershed black locust afforestation and natural revegetation impacts on soil nitrogen on the Loess Plateau of China
Jin, Zhao1; Li, Xiangru1,2; Wang, Yunqiang1; Wang, Yi1; Wang, Kaibo1; Cui, Buli1,3
2016-04-26
Source PublicationSCIENTIFIC REPORTS
Volume6Issue:2016
SubtypeArticle
AbstractThis study examined a pair of neighbouring small watersheds with contrasting vegetations: artificial forestland and natural grassland. Since 1954, afforestation which mainly planted with black locust has been conducted in one of these watersheds and natural revegetation in the other. The differences in soil total N, nitrate, ammonium, foliar litterfall delta N-15 and dual stable isotopes of delta N-15 and delta O-18 in soil nitrate were investigated in the two ecosystems. Results showed that there was no significant difference in soil total N storage between the two ecosystems, but the black locust forestland presented higher soil nitrate than the grassland. Moreover, the foliar litterfall N content and delta N-15 of the forestland were significant higher than the grassland. These results indicate that 60 years of watershed black locust afforestation have increased soil N availability. The higher nitrate in the forestland was attributed to the biological N fixation of black locust and difference in ecosystem hydrology. The dual stable isotopes of delta N-15 and delta O-18 revealed that the two ecosystems had different sources of soil nitrate. The soil nitrate in the forestland was likely derived from soil N nitrification, while the soil nitrate in the grassland was probably derived from the legacy of NO3- fertiliser.
WOS HeadingsScience & Technology
DOI10.1038/srep25048
WOS KeywordROBINIA-PSEUDOACACIA L ; CARBON SEQUESTRATION ; LAND-USE ; AGRICULTURAL ABANDONMENT ; FOREST ; AVAILABILITY ; PRODUCTIVITY ; RESTORATION ; PLANTATION ; CATCHMENT
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000374830100001
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5780
Collection生态环境研究室
Affiliation1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
2.Xian AMS Ctr, Shaanxi Key Lab Accelerator Mass Spectrometry Tec, Xian 710061, Peoples R China
3.Ludong Univ, Sch Resources & Environm Engn, Yantai 264025, Peoples R China
Recommended Citation
GB/T 7714
Jin, Zhao,Li, Xiangru,Wang, Yunqiang,et al. Comparing watershed black locust afforestation and natural revegetation impacts on soil nitrogen on the Loess Plateau of China[J]. SCIENTIFIC REPORTS,2016,6(2016).
APA Jin, Zhao,Li, Xiangru,Wang, Yunqiang,Wang, Yi,Wang, Kaibo,&Cui, Buli.(2016).Comparing watershed black locust afforestation and natural revegetation impacts on soil nitrogen on the Loess Plateau of China.SCIENTIFIC REPORTS,6(2016).
MLA Jin, Zhao,et al."Comparing watershed black locust afforestation and natural revegetation impacts on soil nitrogen on the Loess Plateau of China".SCIENTIFIC REPORTS 6.2016(2016).
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