Abstract Aims Unmanned aerial vehicles (UAVs), i.e. drones, have recently emerged as cost-effective and flexible tools for acquiring remote sensing data with fine spatial temporal resolution. It provides a new method opportunity plant ecologists to study issues from individual regional scales. However, method, UAVs applications in ecology are still challenged. The needs of research the application development should be better integrated. Methods This report comprehensive review UAV-based...

Detection of long-term vegetation dynamics is important for identifying improvement and degradation, especially rapidly urbanizing regions with intensive land cover conversions. The Guangdong–Hong Kong–Macao Greater Bay Area (GBA) urban agglomeration has experienced rapid urbanization during the past decades profound impacts on vegetation, so there an urgent need to evaluate across use/cover change (LUCC). Based normalized difference index (NDVI) 2001–2020, we used coefficient variation,...

A Bletilla striata (Thunb.) Reichb.f., known as Bai Ji in Chinese, is a plant from the Orchidaceae family that has been used for its medicinal properties thousands of years China. B. holds significant economic value due to esteemed applications. Our study aimed analyze transcriptome wild tubers across multiple understand molecular mechanisms regulating polysaccharide metabolism and tuber enlargement. We collected samples different growth ages analyzed their chemical composition, including...

Plant functional traits are closely associated with key ecological processes and ecosystem functions. Recent studies have demonstrated that plant traits, especially physiological can be successfully derived from hyperspectral images. frequently quantified either as area-based content [μg cm−2] or mass-based concentration [mg g−1 %]. However, it remains unclear whether the two metrics of using remote sensing approaches. We area- foliar to compare prediction accuracy based on leaf spectra...

Questions: What are the nurse effects of Rhodomyrtus tomentosa in degraded land South China? Are canopy or soil factors responsible for main effect? Do facilitative increase with shade tolerance target species? Location: Degraded shrubland China. Methods: Seedlings three native climax woody species (Schima superba, Michelia macclurei, Castanopsis fissa) that differ were subjected to four treatments by transplantation: (1) under R. shrubs; (2) open interspaces without vegetation cover...

Abstract The relative importance of facilitation and competition between pairwise plants across abiotic stress gradients as predicted by the stress‐gradient hypothesis has been confirmed in arid temperate ecosystems, but rarely tested tropical systems, particularly nutrient gradients. current research examines interactions a pioneer shrub Rhodomyrtus tomentosa (the nurse plant) seedlings transplanted native woody Schima superba target species) system which position on slope corresponds with...

For the purposes of forest restoration, carbon (C) fixation, and economic improvement, eucalyptus (Eucalyptus urophylla) has been widely planted in South China. The understory plantations is often occupied by a dense community fern Dicranopteris dichotoma, which intercepts tree canopy leaf litter before it reaches ground. To understand effects this interception litterfall on C cycling plantations, we quantified mass intercepted influences decomposition soil respiration. total E. urophylla...

Mikania micrantha Kunth is an invasive alien weed and known as a plant killer around the world. Accurately rapidly identifying M. in wild important for monitoring its growth status, this helps management officials to take necessary steps devise comprehensive strategy control identified area. However, approach still mainly depends on satellite remote sensing manual inspection. The cost high accuracy rate efficiency are low. We acquired color images of area environment using Unmanned Aerial...

How to distinguish the relative role of climate change and human activities in vegetation dynamics has attracted increasing attention. However, most current studies concentrate on arid semiarid regions, while contributions changes remain unclear warm-humid regions. Based normalized difference index (NDVI) climatic variables (temperature, precipitation, radiation) during 2001–2020, this study used Theil–Sen median trend analysis, partial correlation residual analysis analyze spatiotemporal...

Abstract The Chinese government is considering ways to reconstruct Eucalyptus plantation monocultures in order improve their ecosystem services. However, the effects of competition or facilitation on native species during reconstruction have not been identified, especially formation novel ecosystems. To better understand these relationships, this study we tested and three target ( Schima superba , Michelia macclurei Castanopsis fissa ), plantations with different ages understory vegetation....

Establishing seedlings in subtropical plantations is very important for forest health, succession and management. Information on seedling nutrient concentrations essential both the selection of suitable indigenous tree species to accelerate established plantation sustainable In this study, we investigated nitrogen ([N]), phosphorus ([P]), N∶P ratio leaves, stems roots three (Castanopsis chinensis, Michelia chapensis Psychotria rubra) transplanted with removing or retaining understory...

Invasive alien plants (IAPs) are considered to be one of the greatest threats global biodiversity and ecosystems. Timely accurate detection technology is needed identify these invasive plants, helping mitigate damage farmland, fruit trees woodland. Hyperspectral has potential similar species. However, challenge remains simultaneously multiple with colors based on image data. The spectral images were collected by a hyperspectral camera range 450–998 nm, raw spectra extracted Cubert software....

Abstract The quantitative role of the canopy size nurse shrubs on microenvironment and native tree establishment in degraded tropical lands has been seldom studied. In a 21‐month field experiment, we aimed to test effect shrub with different sizes early trees as part effort forest restoration China. We examined microenvironment, seedling growth two trees: Castanopsis fissa Syzygium hancei both open space ( OS ) microsite under pioneer Rhodomyrtus tomentosa . Shrub was further divided into...

As atmospheric nitrogen (N) deposition continues to increase, information on how N affects seedling performance of tree species is critical for predicting forest regeneration. In this study, we examined the effects canopy addition at 25 and 50 kg ha−1 year−1 (CAN25 CAN50), understory (UAN25 UAN50) survival, physiology, growth seedlings two dominant woody (Schima superba Ardisia quinquegona) that were transplanted into a subtropical evergreen broadleaved forest. At years after transplanting,...