气候变化领域集成服务门户(CCPortal): Thinning drives C:N:P stoichiometry and nutrient resorption in Larix principis-rupprechtii plantations in North China

CCPortal

DOI	10.1016/j.foreco.2020.117984
	Thinning drives C:N:P stoichiometry and nutrient resorption in Larix principis-rupprechtii plantations in North China
	Qiu X.; Wang H.; Peng D.; Liu X.; Yang F.; Li Z.; Cheng S.
发表日期	2020
ISSN	0378-1127
卷号	462
英文摘要	Carbon (C):nitrogen (N):phosphorous (P) stoichiometry and nutrient resorption play an important role in terrestrial biogeochemical cycling and functioning. However, little information is available about the changes in C:N:P stoichiometry and nutrient resorption following thinning in plantation forests. Here, to reveal how thinning affects the C:N:P stoichiometry and nutrient resorption and their relationships, green leaves, senesced leaves and soil samples were collected from a pure Larix principis-rupprechtii plantation in North China after 9 years of four different thinning treatments, i.e., control (CK, 0% thinning), low thinning (LT, 14% thinning), moderate thinning (MT, 28% thinning) and high thinning (HT, 42% thinning). The results showed that excluding the green leaf C contents, thinning significantly increased the C, N, and P contents in green leaves, senesced leaves, and soil (p < 0.05). Thinning significantly decreased the C:N and C:P ratios in green leaves, C:P and N:P ratios in senesced leaves, and C:N, C:P, and N:P ratios in soil (p < 0.05), while thinning did not significantly affect green leaf N:P and senesced leaf C:N ratios (p > 0.05). The N resorption efficiency (NRE) showed no significant differences among different thinning treatments (p > 0.05), while thinning significantly decreased the P resorption efficiency (PRE, p < 0.05). There were different degrees of correlations between nutrient contents, stoichiometry ratios and nutrient resorption, and most of which were affected by soil properties (bulk density, soil water contents, available nitrogen and phosphorus, pH, electrical conductivity, soil microbial biomass C and N, and the activities of soil β-glucosidase, N-acetylglucosaminidase, and acid phosphatase). The N:P ratios of green leaves and senesced leaf litter and the nutrient resorption suggested that Larix principis-rupprechtii plantations in the study region were limited by N. Overall, the variations in nutrient contents, stoichiometry ratios, nutrient resorption, and soil properties demonstrate that thinning can significantly increase nutrient contents, promote nutrient cycling, and improve soil fertility. Among the four thinning treatments, in terms of nutrients, MT is recommended in Larix principis-rupprechtii plantations in North China. Furthermore, appropriate fertilization management strategies should be considered to improve N-limitation status. © 2020 Elsevier B.V.
关键词	Efficiency Forestry Nitrogen Phosphatases Phosphorus Plants (botany)Soil moisture Stoichiometry Green and senesced leaves Larix principis-rupprechtii plantations N:p stoichiometries Nutrient resorptions Plant-soil interactions Thinning Nutrients biogeochemical cycle biomass dicotyledon enzyme enzyme activity leaf area leaf litter nutrient limitation nutrient use efficiency plantation forestry soil nutrient soil property soil-vegetation interaction stoichiometry terrestrial ecosystem thinning Efficiency Forestry Nitrogen Phosphorus Stoichiometry Thinning China Larix gmelinii var. principis-rupprechtii
语种	英语
来源机构	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132930
推荐引用方式 GB/T 7714	Qiu X.,Wang H.,Peng D.,et al. Thinning drives C:N:P stoichiometry and nutrient resorption in Larix principis-rupprechtii plantations in North China[J]. Forest Ecology and Management,2020,462.
APA	Qiu X..,Wang H..,Peng D..,Liu X..,Yang F..,...&Cheng S..(2020).Thinning drives C:N:P stoichiometry and nutrient resorption in Larix principis-rupprechtii plantations in North China.,462.
MLA	Qiu X.,et al."Thinning drives C:N:P stoichiometry and nutrient resorption in Larix principis-rupprechtii plantations in North China".462(2020).