Prediction technology of Chinese fir forest ecological value based on remote sensing inversion

Guan, Yanfen; Huang, Yingli; Qin, Huiyan; Zhang, Xianghua

doi:10.1007/s13204-021-02112-y

Cited by 3 publications

(1 citation statement)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Chinese fir ( Cunninghamia lanceolata ) is the most widely planted timber species in China due to its rapid growth and high‐quality wood (He et al, 2021). However, continuous monoculture practices of Chinese fir have resulted in a decline in soil fertility, biodiversity, and forest productivity (Bi et al, 2007; Zeng et al, 2021; Guan et al, 2023) due to the lack of forest diversity and the accumulation of allelochemicals in the soil from litter decomposition and root exudates that contribute to soil autotoxicity (Chen and Wang, 2013). The planting of mixed broad‐leaved trees in coniferous forests has become a widely adopted management practice to improve soil fertility and forest productivity (Richards et al, 2010; Liao et al, 2022; Zhou et al, 2020b).…”

Section: Introductionmentioning

confidence: 99%

Nitrogen addition affected the root competition in Cunninghamia lanceolata–Phoebe chekiangensis mixed plantation

Yang,

Yi,

Wang

et al. 2024

Physiologia Plantarum

View full text Add to dashboard Cite

Little is known about below‐ground competition in mixed‐species plantations under increasing nitrogen (N) deposition. This study aims to determine the effects of N addition on root competition in coniferous and broad‐leaved species mixed plantations. A pot experiment was conducted using the coniferous species Cunninghamia lanceolata and the broad‐leaved species Phoebe chekiangensis planted in mixed plantations with different competition intensities under N addition (0 or 45 kg N ha−1 yr−1). Biomass allocation, root morphology, root growth level, and competitive ability were determined after five months of treatment. Our findings indicated that root interactions in mixed plantations did not influence biomass allocation in either C. lanceolata or P. chekiangensis but promoted growth in C. lanceolata when no N was added. However, N addition decreased biomass accumulation in both species in the mixed plantation and had a negative effect on the root growth of C. lanceolata due to intensified competition. Addition of N increased the relative importance of root predatory competition in P. chekiangensis, and increased the allelopathic competitive advantage in C. lanceolata. This suggests that N addition causes a shift in the root competitive strategy from tolerance to competition. Overall, these findings highlight the significant impact that the addition of N can have on plant interactions in mixed plantations. Our results provide implications for the mechanisms of root competition in response to increasing atmospheric N deposition in mixed plantations.

show abstract

Section: Introductionmentioning

confidence: 99%

Nitrogen addition affected the root competition in Cunninghamia lanceolata–Phoebe chekiangensis mixed plantation

Yang,

Yi,

Wang

et al. 2024

Physiologia Plantarum

View full text Add to dashboard Cite

show abstract

Response of Soil Microbial Community in Different Forest Management Stages of Chinese fir Plantation

Liao,

Chen,

Huang

et al. 2024

Forests

View full text Add to dashboard Cite

The cultivation of Cunninghamia lanceolata (Lamb.) Hook. (Chinese fir) plays a crucial role in enhancing ecological security through water resource preservation and carbon sequestration in China. The biotic and abiotic environmental conditions vary across different stages of plantation, thereby influencing soil nutrient levels and microbial dynamics. However, the interconnection between the soil nutrient cycle and microbial communities within Chinese fir plantations throughout their entire life cycle remains inadequately understood. In this study, conducted across various management stages of Chinese fir plantations in China (including the juvenile stage, first thinning stage, second thinning stage, mature stage, and over-mature stage), we examined the associations among soil organic carbon, soil physicochemical properties, soil enzyme activities, and soil microbial dynamics. Our results revealed that forest management practices significantly modify soil physicochemical properties and enzyme activities across all management stages. Specifically, the concentrations of total soil carbon, soil organic carbon, and soil microbial biomass carbon were notably higher in the over-mature stage compared to other management stages. At the genus level, the five highest contributors belonged to Subgroup2, AD3, Xanthobacteraceae, Elsterales, and Acidobacteriales for the bacterial community. For the fungal community at the genus level, the five highest contributors belonged to Ascomycota, Serendipita, Saitozyma, Mortieralla, and Venturiales. Moreover, anthropogenic thinning activities during the management phase substantially altered both stand and soil environments, as well as the structural characteristics of soil microbial communities. Soil cellulase, soil electrical conductivity (EC), and soil available phosphorus (AP) emerged as key factors influencing the relative abundance of major fungal communities, whereas soil total nitrogen, EC, and AP were identified as critical factors affecting the relative abundance of major bacterial phyla. More microbiological groups increased significantly in the juvenile stage and over-mature stage. Our findings elucidate the intricate relationships between the soil nutrient cycle and soil microbiological dynamics across various forest management stages within Chinese fir plantations.

show abstract

Influence of Slope Aspect and Position on Xylem Formation Dynamics in Subtropical Chinese Fir Plantations

Huang,

Li,

Bai

et al. 2024

Forests

View full text Add to dashboard Cite

Recent studies on the intra-annual dynamics of trees were mainly focused on mature trees in natural forests; however, less is known about how topography (e.g., slope’s position and aspect) shape the intra-annual xylem formation dynamics of young trees in plantation forests. We monitored intra-annual xylem formation dynamics of 6-year-old Chinese fir (Cunninghamia lanceolata (Lamb.)) trees across two different aspects (northeast and southwest) and three different positions (upper, middle, and lower) of the slope in a planted forest in subtropical China. We found that the intra-annual xylem formation of trees on the northeast slope aspect (176.98 ± 34.52 cells) was significantly higher than that on the southwest slope aspect (140.19 ± 36.07 cells) due to the higher growth rate (0.67 ± 0.11 cells/day vs. 0.53 ± 0.10 cells/day). In the middle slope position, xylem formation (187.89 ± 19.81 cells) was also significantly higher than that of the upper (147.35 ± 29.08 cells) and lower slope positions (140.51 ± 48.36 cells), resulting from higher growth rate rather than longer growing season length. Our study demonstrated that intra-annual xylem formation dynamics of Chinese fir were altered by different topographic features and therefore encourage the implementation of management strategies that consider different slope aspects and positions to maximize forest productivity.

show abstract

Prediction technology of Chinese fir forest ecological value based on remote sensing inversion

Cited by 3 publications

References 15 publications

Nitrogen addition affected the root competition in Cunninghamia lanceolata–Phoebe chekiangensis mixed plantation

Nitrogen addition affected the root competition in Cunninghamia lanceolata–Phoebe chekiangensis mixed plantation

Response of Soil Microbial Community in Different Forest Management Stages of Chinese fir Plantation

Influence of Slope Aspect and Position on Xylem Formation Dynamics in Subtropical Chinese Fir Plantations

Contact Info

Product

Resources

About