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Negative / Null Result Report

Absence of significant effect of nitrogen addition on soil respiration in a subtropical Chinese fir plantation

Xiang Zheng; Yingying He; Minmin Cao; Sibo Liu; Juan Hu; Ling Zhang; Jiang Jiang · 2025 · Canadian Journal of Forest Research

WASTE classifies this as Negative / Null Result Report · AI classification, approximate

The study found no significant effect — useful as a negative control or null benchmark for your own design.

Abstract (excerpt)

Chinese fir ( Cunninghamia lanceolata (Lamb.) Hook) is one of the most dominant tree species in southern China. However, the effect of different nitrogen (N) levels on soil respiration in subtropical Chinese fir plantations remains…

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Metadata source: Crossref · DOI 10.1139/cjfr-2025-0011