Spatial variability of soil total C and N and their stable isotopes in an upland Scottish grassland

被引：0
|
作者：
C.A. Marriott
G. Hudson
D. Hamilton
R. Neilson
B. Boag
L.L. Handley
J. Wishart
C.M. Scrimgeour
D. Robinson
机构：
[1] Macaulay Land Use Research Institute,
[2] Scottish Crop Research Institute,undefined
来源：
Plant and Soil | 1997年 / 196卷
关键词：
geostatistics; grazing management; 13-C; 15-N; resource patchiness; ryegrass-clover pastures;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
As preparation for a below ground food web study, the spatial variability of three soil properties (total N, total C and pH) and two stable isotopes (δ13C and δ15N of whole soil) were quantified using geostatistical approaches in upland pastures under contrasting management regimes (grazed, fertilised and ungrazed, unfertilised) in Scotland. This is the first such study of upland, north maritime grasslands. The resulting patterns of variability suggest that to obtain statistically independent samples in this system, a sampling distance of ≥13.5 m is required. Additionally, temporal change (a decline of 1‰) was observed in whole soil δ15N for the grazed, fertilised plot. This may have been caused by new inputs of symbiotically-fixed atmospheric N2.
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页码：151 / 162
页数：11
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