Response of Thinning to C:N:P Stoichiometric Characteristics and Seasonal Dynamics of Leaf-Litter-Soil System in Cupressus funebris Endl. Artificial Forests in Southwest, China

作者：Xue Jiang, Jingtian Yang, Yulian Yang, Jiaping Yang, Qing Dong, Houyuan Zeng, Kaiyou Zhang, Ning Xu, Jiayi Yuan, Mei Liu, Dehui Li, Qinggui Wu · 发表于：Forests · 年份：2024 · DOI：10.3390/f15081435 · 被引用次数：4 · 研究领域：Plant Water Relations and Carbon Dynamics、Forest ecology and management、Ecology and Vegetation Dynamics Studies

Ecological stoichiometry is essential for investigating biogeochemical cycling in an ecosystem. Thinning, a management practice that closely mimics natural processes, significantly influences stand structure and microclimate, thereby affecting nutrient cycling. Nonetheless, seasonal variations in ecological stoichiometry across the leaf-litter-soil continuum under different thinning regimes remain inadequately understood. In this study, we evaluated three thinning methods (strip filling (SF), ecological thinning (ET), and forest gap (FG)) to investigate the stoichiometric characteristics of Cupressus funebris Endl (C. funebris). within the leaf-litter-soil system in Southwest China. The samples were collected during four distinct seasonal periods: early dry season (January–March, EDS), late dry season (April–June, LDS), early wet season (July–September, EWS), and late wet season (October–December, LWS). The results indicated that the (1) carbon (C), nitrogen (N), and phosphorus (P) contents and C:N:P ratio in leaves, litter, and soils varied widely and were strongly influenced by thinning method and season. (2) In the EDS, the soil TP content significantly decreased by 36.9% (p < 0.05), 41.67% (p < 0.05), and 17.9% (p < 0.05) under ET, FG, and SF treatments compared to the pure C. funebris forest (PC). (3) Compared to the PC, the leaf organic C content under ET significantly increased by 6.6% (EDS, p < 0.05), 8.4% (EWS, p < 0.05), 24.8% (LDS, p < 0.05), and ...