Spatial variation and soil nitrogen potential hotspots in a mixed land cover catchment on the Chinese Loess Plateau

Yun long Yu, Zhao Jin, Hangsheng Lin, Yun qiang Wang, Ya li Zhao, Guang chen Chu, Jing Zhang, Yi Song, Han Zheng

Research output: Contribution to journalArticle

Abstract

Soil nitrogen (N) is critical to ecosystem services and environmental quality. Hotspots of soil N in areas with high soil moisture have been widely studied, however, their spatial distribution and their linkage with soil N variation have seldom been examined at a catchment scale in areas with low soil water content. We investigated the spatial variation of soil N and its hotspots in a mixed land cover catchment on the Chinese Loess Plateau and used multiple statistical methods to evaluate the effects of the critical environmental factors on soil N variation and potential hotspots. The results demonstrated that land cover, soil moisture, elevation, plan curvature and flow accumulation were the dominant factors affecting the spatial variation of soil nitrate (NN), while land cover and slope aspect were the most important factors impacting the spatial distribution of soil ammonium (AN) and total nitrogen (TN). In the studied catchment, the forestland, gully land and grassland were found to be the potential hotspots of soil NN, AN and TN accumulation, respectively. We concluded that land cover and slope aspect could be proxies to determine the potential hotspots of soil N at the catchment scale. Overall, land cover was the most important factor that resulted in the spatial variations of soil N. The findings may help us to better understand the environmental factors affecting soil N hotspots and their spatial variation at the catchment scale in terrestrial ecosystems.

Original languageEnglish (US)
Pages (from-to)1353-1366
Number of pages14
JournalJournal of Mountain Science
Volume16
Issue number6
DOIs
StatePublished - Jun 1 2019

Fingerprint

soil nitrogen
loess
land cover
spatial variation
plateau
catchment
soil
environmental factors
environmental quality
statistical method
environmental factor
ammonium
soil moisture
spatial distribution
nitrogen
water
gully
terrestrial ecosystem
ecosystem service
curvature

All Science Journal Classification (ASJC) codes

  • Global and Planetary Change
  • Geography, Planning and Development
  • Geology
  • Earth-Surface Processes
  • Nature and Landscape Conservation

Cite this

Yu, Yun long ; Jin, Zhao ; Lin, Hangsheng ; Wang, Yun qiang ; Zhao, Ya li ; Chu, Guang chen ; Zhang, Jing ; Song, Yi ; Zheng, Han. / Spatial variation and soil nitrogen potential hotspots in a mixed land cover catchment on the Chinese Loess Plateau. In: Journal of Mountain Science. 2019 ; Vol. 16, No. 6. pp. 1353-1366.
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abstract = "Soil nitrogen (N) is critical to ecosystem services and environmental quality. Hotspots of soil N in areas with high soil moisture have been widely studied, however, their spatial distribution and their linkage with soil N variation have seldom been examined at a catchment scale in areas with low soil water content. We investigated the spatial variation of soil N and its hotspots in a mixed land cover catchment on the Chinese Loess Plateau and used multiple statistical methods to evaluate the effects of the critical environmental factors on soil N variation and potential hotspots. The results demonstrated that land cover, soil moisture, elevation, plan curvature and flow accumulation were the dominant factors affecting the spatial variation of soil nitrate (NN), while land cover and slope aspect were the most important factors impacting the spatial distribution of soil ammonium (AN) and total nitrogen (TN). In the studied catchment, the forestland, gully land and grassland were found to be the potential hotspots of soil NN, AN and TN accumulation, respectively. We concluded that land cover and slope aspect could be proxies to determine the potential hotspots of soil N at the catchment scale. Overall, land cover was the most important factor that resulted in the spatial variations of soil N. The findings may help us to better understand the environmental factors affecting soil N hotspots and their spatial variation at the catchment scale in terrestrial ecosystems.",
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Spatial variation and soil nitrogen potential hotspots in a mixed land cover catchment on the Chinese Loess Plateau. / Yu, Yun long; Jin, Zhao; Lin, Hangsheng; Wang, Yun qiang; Zhao, Ya li; Chu, Guang chen; Zhang, Jing; Song, Yi; Zheng, Han.

In: Journal of Mountain Science, Vol. 16, No. 6, 01.06.2019, p. 1353-1366.

Research output: Contribution to journalArticle

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AU - Yu, Yun long

AU - Jin, Zhao

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AU - Zhao, Ya li

AU - Chu, Guang chen

AU - Zhang, Jing

AU - Song, Yi

AU - Zheng, Han

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