Scholarlink

Aims <p>The Greater Khingan Range in northern China is undergoing significant climate-induced transformations that are jeopardizing nutrient cycling and the stability of its forests. We quantified carbon (C), nitrogen (N), and phosphorus (P) in leaves, branches, trunks, roots, and soils of <i>Larix gmelinii</i>, <i>Betula platyphylla</i>, and <i>Pinus sylvestris</i> to compare organ-level stoichiometry, N:P ratios, and nutrient resorption strategies. Because boreal forests are major carbon sinks, insights from this region can inform global climate models and management strategies.</p> Methods <p>Elemental concentrations were measured for each organ and soil depth; stoichiometric ratios, resorption efficiencies, PCA, and RDA were used to test species-specific nutrient strategies.</p> Results <p><i>B. platyphylla</i> had higher tissue N and P and greater N and P resorption efficiencies than the conifers, indicating a more acquisitive, soil-dependent strategy. <i>L. gmelinii</i> and <i>P. sylvestris</i> showed lower tissue nutrient concentrations and greater reliance on internal nutrient recycling. Leaf N:P in <i>B. platyphylla</i> suggested P limitation.</p> Conclusions <p>These interspecific differences provide insights into the adaptive mechanisms of boreal forest species in response to nutrient limitations, offering valuable guidance for reforestation efforts and predictions of forest ecosystem dynamics under climate change.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Nutrient stoichiometry and resorption strategies in dominant tree species of the greater khingan range

  • 期刊论文

  • 发表日期：

    2025年12月4日

查看全文
  • Yaxiong Zheng,
  • Yongjie Yue,
  • Longfei Hao,
  • Runhong Gao

摘要

Aims

The Greater Khingan Range in northern China is undergoing significant climate-induced transformations that are jeopardizing nutrient cycling and the stability of its forests. We quantified carbon (C), nitrogen (N), and phosphorus (P) in leaves, branches, trunks, roots, and soils of Larix gmelinii, Betula platyphylla, and Pinus sylvestris to compare organ-level stoichiometry, N:P ratios, and nutrient resorption strategies. Because boreal forests are major carbon sinks, insights from this region can inform global climate models and management strategies.

Methods

Elemental concentrations were measured for each organ and soil depth; stoichiometric ratios, resorption efficiencies, PCA, and RDA were used to test species-specific nutrient strategies.

Results

B. platyphylla had higher tissue N and P and greater N and P resorption efficiencies than the conifers, indicating a more acquisitive, soil-dependent strategy. L. gmelinii and P. sylvestris showed lower tissue nutrient concentrations and greater reliance on internal nutrient recycling. Leaf N:P in B. platyphylla suggested P limitation.

Conclusions

These interspecific differences provide insights into the adaptive mechanisms of boreal forest species in response to nutrient limitations, offering valuable guidance for reforestation efforts and predictions of forest ecosystem dynamics under climate change.