搜索结果: 1-15 共查到“林学 nitrogen”相关记录40条 . 查询时间(0.163 秒)
Seasonal Variations in Carbon, Nitrogen, and Phosphorus Stoichiometry of a Robinia pseudoacacia Plantation on the Loess Hilly Region, China
ecological stoichiometry plants-litter-soil seasonal variation plantation Loess Plateau
<
2024/1/11
Seasonal variations in stoichiometry are a crucial regulatory mechanism for plant communities that respond to environmental changes. However, the seasonal characteristics of stoichiometry in plants, l...
Temporal nitrogen dynamics in intensively managed loblolly pine early stand development
Short-rotation woody crops (SRWC) Sustainability of production forestry Nitrogen budget Nitrogen use efficiency Pinus taeda Silviculture
<
2024/1/11
Forest production is strongly dependent on nutrient uptake; however, sustainable management of intensively managed plantations requires an improved understanding of this relationship when fertilizatio...
Modelling climate change impacts on maize yields under low nitrogen input conditions in sub-Saharan Africa
crop simulation model ensemble modelling model intercomparison smallholder farming systems uncertainty
<
2023/12/21
Smallholder farmers in sub-Saharan Africa (SSA) currently grow rainfed maize with limited inputs including fertilizer. Climate change may exacerbate current production constraints. Crop models can hel...
Correlation of Leaf and Root Traits of Two Angiosperm Tree Species in Northeast China under Contrasting Light and Nitrogen Availabilities
leaf-specific traits leaf morphology root morphology leaf mass per area leaf density specific root length specific root area root tissue density
<
2023/12/19
Thinning is an important management practice for reducing plant competition and improving wood production in forests. The residues from thinning can contain large amounts of carbon (C) and nitrogen (N...
Prediction of plant species occurrence as affected by nitrogen deposition and climate change on a European scale
Biodiversity Climate change Nitrogen deposition Precipitation Soil EUNIS
<
2023/12/19
Plant species occurrence in Europe is affected by changes in nitrogen deposition and climate. Insight into potential future effects of those changes can be derived by a model approach based on field-b...
Ensemble machine-learning-based framework for estimating total nitrogen concentration in water using drone-borne hyperspectral imagery of emergent plants: A case study in an arid oasis, NW China
Water resources Remote sensing Total nitrogen Hyperspectral imagery Machine learning Bootstrap
<
2023/12/19
In arid and semi-arid regions, water-quality problems are crucial to local social demand and human well-being. However, the conventional remote sensing-based direct detection of water quality paramete...
Patterns and Internal Stability of Carbon, Nitrogen, and Phosphorus in Soils and Soil Microbial Biomass in Terrestrial Ecosystems in China: A Data Synthesis
spatial pattern C:N:P vegetation types nutrient limitation homeostasis
<
2023/12/11
Inspired by the strict constraint ratio (relatively low variability) between carbon (C), nitrogen (N), and phosphorus (P) in global soils and soil microbial biomass, our study explores the biogeograph...
Aridity and High Salinity, Rather Than Soil Nutrients, Regulate Nitrogen and Phosphorus Stoichiometry in Desert Plants from the Individual to the Community Level
biogeochemistry natural grassland extreme environment drought stress adaptation
<
2023/12/4
The stoichiometric characteristics of plant nitrogen (N) and phosphorus (P) and their correlations with soil properties are regarded as key for exploring plant physiological and ecological processes a...
Monthly Dynamical Patterns of Nitrogen and Phosphorus Resorption Efficiencies and C:N:P Stoichiometric Ratios in Castanopsis carlesii (Hemsl.) Hayata and Cunninghamia lanceolata (Lamb.) Hook. Plantations
nutrient reuse strategy nutrient limitation ecological stoichiometric ratios mature and senescent leaves subtropical forest plantation
<
2023/12/1
Trees can resorb nutrients to preserve and reuse them before leaves fall, which could efficiently adapt to environmental changes. However, the nutrient requirements of trees in different months with s...
Higher leaf nitrogen content is linked to tighter stomatal regulation of transpiration and more efficient water use across dryland trees
arid ecosystems ci/ca ratio leafδ13C leaf δ18O plant isotopic composition
<
2023/11/28
The least-cost economic theory of photosynthesis shows that water and nitrogen are mutually substitutable resources to achieve a given carbon gain. However, vegetation in the Sahel has to cope with th...
Soil Organic Nitrogen Components and N?Cycling Enzyme Activities Following Vegetation Restoration of Cropland in Danxia Degraded Region
reforestation succession forest vegetation pine plantations karst
<
2023/11/22
This study outlines research performed on experimental plots established in forest plantations and in natural black pine forests. The objective of the study was to determine the habitat factors that h...
Differential Response of Soil Respiration and Total Belowground Carbon Allocation to Simulated Nitrogen and Phosphorus Deposition in Moso Bamboo Forests
N and P deposition autotrophic respiration heterotrophic respiration net ecosystem production root carbon-use efficiency
<
2023/11/22
Elevated nitrogen (N) and phosphorus (P) depositions have greatly affected belowground carbon processes in forest ecosystems. However, open questions still remained on the effects of N and P depositio...
Unraveling the Effects of Pruning Frequency on Biomass Productivity, Nonstructural Carbohydrates and Nitrogen Fixation Rates of Sesbania sesban
biomass pruning frequency Sesbania sesban 15N natural abundance N2 fixation Ndfa
<
2023/11/22
Tree pruning is a management tool in agroforestry systems for reducing shade, enhancing nutrient cycling or providing fodder. However, little information is available on the effect of pruning manageme...
Differential Responses of Soil Respiration and Its Components to Nitrogen Application in Urban Forests
urban forest nitrogen application autotrophic respiration heterotrophic respiration soil respiration
<
2023/11/21
Understanding the impacts of nitrogen (N) deposition on soil respiration (Rs) and its components (autotrophic respiration (Ra) and heterotrophic respiration (Rh)) in urban forests is crucial for predi...
Non-destructive Measurements of Toona sinensis Chlorophyll and Nitrogen Content Under Drought Stress Using Near Infrared Spectroscopy
Toona Chlorophyll Nitrogen Content Drought Stress
<
2023/6/2
Drought is a climatic event that considerably impacts plant growth, reproduction and productivity. Toona sinensis is a tree species with high economic, edible and medicinal value, and has drought resi...