More than 60% of the total area tree plantations in China is subtropical, and over 70% subtropical consist pure stands coniferous species. Because poor ecosystem services provided by ecological instability these stands, a movement under way to promote indigenous broadleaf plantation cultivation as promising alternative. However, little known about carbon (C) stocks their dependence on stand age. Thus, we studied above- below-ground biomass C chronosequence Mytilaria laosensis China; were 7,...

Dalbergia odorifera T. Chen (Fabaceae) is a semi-deciduous tree species indigenous to Hainan Island in China. Due its precious heartwood “Hualimu (Chinese)” and Chinese medicinal components “Jiangxiang”, D. seriously threatened of long-term overexploitation has been listed on the IUCN (International Union for Conservation Nature’s) red list since 1998. Therefore, elucidation genetic diversity imperative conservation breeding purposes. In this study, we evaluated 42 wild trees from seven...

Dalbergia odorifera T. Chen (Fabaceae) is a woody tree species indigenous to Hainan Island in China. Due its high medicinal and commercial value, this has been planted over 3500 ha² southern There an urgent need for improvement of the D. germplasm, however, limited information on germplasm collection, conservation, assessment genetic resources available. Therefore, we have built database 251 individuals collected across whole China, which included 42 wild trees 210 cultivated trees, with...

Nonstructural carbohydrates (NSC) are indicators of tree carbon balance and play an important role in regulating plant growth survival. However, our understanding the mechanism underlying drought-induced response NSC reserves remains limited. Here, we conducted a long-term throughfall exclusion (TFE) experiment to investigate seasonal responses manipulative drought two contrasting species (a broadleaved Castanopsis hystrix Miq. coniferous Pinus massoniana Lamb.) subtropical China. We found...

Financial returns of forest plantations are an important concern around the world. In this research, we focused on South China's timber investments, collected data from Pingxiang, Guangxi Province, China, which is demonstration zone Fast-growing and High-yielding Timber Plantation Base Construction Program National Strategic Storage Production Bases Program, used capital budgeting analysis method sensitivity to compare different scenarios planted management. The results showed that excluding...

Greenhouse gases are the main cause of global warming, and forest soil plays an important role in greenhouse gas flux. Near natural management is one most promising options for improving function forests as carbon sinks. However, its effects on emissions not yet clear. It therefore necessary to characterise near plantation ecosystems. We analysed influence flux three major (carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O)) Pinus massoniana Lamb. Cunninghamia lanceolata (Lamb.) Hook....

Tectona grandis is a valuable timber species with heartwood that used worldwide. Most of the previous studies on its and sapwood have focused dominant or mean trees, while trees different social status might show vertical horizontal distributions sapwood. Studies their properties could be conducive to increasing yield at stand level. In 31-year-old plantations T. in southwest Guangxi, China, were divided into three groups including dominant, suppressed trees. Stem analysis was conducted for...

Castanopsis hystrix is a major community-building species in the top communities of southern subtropical China, with high natural regeneration capacity. However, excessive logging and introduction exotic tree have substantially reduced area forest patches hystrix, seedling essential for long-term continuation populations. To explore effects light intensity on emergence early growth shading experiments were conducted under four treatments (0%, 40%, 60%, 80%). The growth, biomass accumulation,...

Close-to-nature transformation silviculture is a promising approach to meet the criteria for sustainable forestry. To explore effects of close-to-nature on community structure and plant diversity in Pinus massoniana Cunninghamia lanceolatas pure plantations, four stands were selected, including transformed stand P. (PCN) its unimproved (PCK), C. lanceolata (CCN) (CCK). Plant investigated before after decade transformation. After transformation, significantly altered. Compared with control...

The growth characteristics and nutrient uptake dynamics of Mytilaria laosensis Lec. seedlings treated weekly with conventional exponential fertilizations were investigated at intervals 3 weeks for 12 in a greenhouse. Leaf area pigment compositions also examined the final harvest. fertility treatments (mg nitrogen seedling–1) included two (50C 100C) four (50E, 100E, 200E 400E) fertilizations, no fertilization (0) as control. biomass contents M. increased exponentially time. Steady-state...

Objective: To investigate the impact of different slope directions on quantity and quality soil seed bank seedling germination process Castanopsis hystrix plantations. Method: Fixed sample plots in forest stands were established (sunny slope, semi-sunny semi-shady shady slope). The characteristics stand investigated, per-wood scaling was carried out. temporal dynamics rain quantified using collectors by collecting samples from depths. seeds determined, vigor mature measured throughout study....

<title>Abstract</title> China has long been the world's largest producer of pine resin. Pinus massoniana Lamb. It is a significant afforestation and timber species in southern China, accounting for more than half forest stock China， proliferates, with high resin yield, making it an essential component forestry operations south mountainous areas pillar industry forestry. However, studies on impact tapping biomass allocation height-diameter allometric growth dynamics <italic>Pinus...

Castanopsis hystrix, a timber resource from Southeast Asia, is characterized by rapid growth and high yield, but plantation quality efficiency improvements are required. Twenty-year-old C. hystrix experimental forests in Yulin, Liuzhou, Pingxiang Guangxi Province, China, comprising 21 open-pollinated half-sib families, were used this study. Genetic variations the (tree height, diameter at breast height (DBH), volume (V)) morphological (height to live crown base (HCB), width (CW), branch...

Facilitation can drive the successional dynamics and change restoration trajectory of degraded forests. However, relative importance facilitation by tree species after variable retention harvesting is unclear. We used a field experiment to evaluate effect two facilitator species, Castanopsis fissa (C. fissa) Manglietia glauca (M. glauca), managed with harvesting, on development target hystrix hystrix) Erythrophloeum fordii (E. fordii), in Masson pine ( Pinus massoniana) monoculture. The...

Imbalanced fertilization of nursery stock can lead to nutrient disorders which affect plant quality and productivity. Castanopsis hystrix Miq. is a plantation hardwood species that being widely established in south China. Nutrient are common planting difficult manage, as the causes unknown. Therefore, macronutrient deletion fertilizer treatments were applied C. seedlings foliar symptoms, growth performance, leaf area, photosynthetic pigments interactions determined. The appearance symptoms...