Scale-dependent effects of environmental factors on soil organic carbon, soil nutrients and stoichiometry under two contrasting land-use types

	Scale-dependent effects of environmental factors on soil organic carbon, soil nutrients and stoichiometry under two contrasting land-use types
	Zhu, Qing; Liao, Kaihua; Lai, Xiaoming; Lv, Ligang
刊名	SOIL USE AND MANAGEMENT
	2021
卷号	37 期号:2 页码:243-256
英文摘要	Variations in and control of soil total organic carbon (TOC), total nitrogen (TN) and total phosphorus (TP) and their stoichiometric ratios (C:N, C:P and N:P) are critical in agricultural nutrient management. This study examined the scale-dependent effects of environmental factors on these soil properties under two contrasting land-use types (tea versus. bamboo) at plot scale (70 x 70 m) and landscape scale (2 x 2 km). Results showed that at both scales, the tea garden generally had higher TOC and nutrient concentrations and lower stoichiometric ratios than the bamboo forest, because of fertilizer and green manure applications in the tea garden. Influences of topography and soil texture on TOC, nutrients and stoichiometric ratios were scale-dependent. In the tea garden plot, as scale increased, influences of topography and soil texture on TOC, TN and C:N ratio increased, whereas their influence on TP, C:P ratio and N:P ratio decreased. Similar patterns were observed in the forest plot. At the landscape scale, the effects of influences of topography and soil texture on TOC and nutrients were not obvious. The spatial variations in TOC, nutrients and stoichiometric ratios were controlled by both topography and soil texture at the plot scale but were mainly influenced by soil texture at the landscape scale. The influences of topography and soil texture on TOC, nutrients and stoichiometric ratios were generally weaker at landscape than at plot scale. This study confirmed that the effect of scale must be considered when predicting the spatial variations in TOC and nutrients.
内容类型	期刊论文
源URL	[http://159.226.73.51/handle/332005/20684]
专题	中国科学院南京地理与湖泊研究所
推荐引用方式 GB/T 7714	Zhu, Qing,Liao, Kaihua,Lai, Xiaoming,et al. Scale-dependent effects of environmental factors on soil organic carbon, soil nutrients and stoichiometry under two contrasting land-use types[J]. SOIL USE AND MANAGEMENT,2021,37(2):243-256.
APA	Zhu, Qing,Liao, Kaihua,Lai, Xiaoming,&Lv, Ligang.(2021).Scale-dependent effects of environmental factors on soil organic carbon, soil nutrients and stoichiometry under two contrasting land-use types.SOIL USE AND MANAGEMENT,37(2),243-256.
MLA	Zhu, Qing,et al."Scale-dependent effects of environmental factors on soil organic carbon, soil nutrients and stoichiometry under two contrasting land-use types".SOIL USE AND MANAGEMENT 37.2(2021):243-256.