A5024884968- Ecology and Vegetation Dynamics Studies
- Aeolian processes and effects
- Plant and animal studies
- Structural Engineering and Vibration Analysis
- Plant Parasitism and Resistance
- Plant Water Relations and Carbon Dynamics
- Remote Sensing and Land Use
- Species Distribution and Climate Change
- Botany and Plant Ecology Studies
- Civil and Geotechnical Engineering Research
- Remote Sensing in Agriculture
- Seed Germination and Physiology
- Railway Engineering and Dynamics
- Bioenergy crop production and management
- Magnetic and Electromagnetic Effects
- Plant Ecology and Soil Science
- Structural Behavior of Reinforced Concrete
- Leaf Properties and Growth Measurement
- Direction-of-Arrival Estimation Techniques
- Phosphorus and nutrient management
- Radar Systems and Signal Processing
- Horticultural and Viticultural Research
- Soil and Water Nutrient Dynamics
- Polymer-Based Agricultural Enhancements
- Advanced Adaptive Filtering Techniques
Chinese Academy of Forestry
2015-2024
Desert Forestry Experimental Center
2015-2024
Tiangong University
2022
Tianjin Medical University Cancer Institute and Hospital
2022
Southwest University
2014
University of Electronic Science and Technology of China
2008-2010
Northwest University
2008
Northwest A&F University
2008
Changes in grassland soil organic carbon stock (SOCS) may significantly affect the regional climate and cycle of terrestrial ecosystems. However, how impact factors on SOCS dominant are regulated by area scale grasslands remains unclear. To understand effects to accurately estimate at different scales, three scales were defined extending types basis meadow, typical desert (Scale I (average 37.22 × 104 km2) included each these grasslands, Scale II 74.45 was achieved a pairwise combination...
How seed dispersal distance is related to various factors a major challenge for ecologists. However, there are different answers as which factor most important in determining wind distance. This study quantitatively describe the relationship between and primary of winged diaspores. The distances five morphologies diaspores Zygophyllum xanthoxylum (Zygophyllaceae) were measured under controlled conditions tunnel. explanatory power environmental (i.e. speed), plant trait release height)...
Seed dispersal has received much research attention. The plant canopy can intercept diaspores, but the effect of (the aboveground portion a consisting branches and leaves) on distance not been explored empirically. To determine seed distance, comparison diaspores falling through open air was made in wind tunnel using three speeds with various traits. Compared air, decreased or increased, depending speed diaspore When canopy, thorns those without appendages promoted at low (2 m s-1), while...
The structure and dynamics of plant populations communities are largely influenced by seed dispersal. How the wind dispersal trajectory seeds shifts with differences in morphology remains unknown. We used a tunnel video camera to track seven species Calligonum whose have different kinds appendages other morphological traits, using variable speeds release heights determine relationship between traits trajectory. Concave-, straight-line-, horizontal-projectile- projectile-shaped trajectories...
Lift-off velocity may be the most useful surrogate to measure secondary dispersal capacity of diaspores. However, important diaspore attribute determining lift-off is unclear. Furthermore, it not known whether terminal used characterize primary diaspores can also predict their wind capacity. Here, we investigate how attributes are related velocity. Thirty-six species with differing in mass, shape index, projected area, wing loading, and were a tunnel determine relationship between We found...
Climate models often predict that more extreme precipitation events will occur in arid and semiarid regions, where plant phenology is particularly sensitive to changes. To understand how increases affect phenology, this study conducted a manipulative field experiment desert ecosystem of northwest China. In study, long-term situ water addition was temperate northwestern The following five treatments were used: natural rain plus an additional 0%, 25%, 50%, 75%, 100% the local mean annual...
Abstract Secondary diaspore dispersal by wind, that is, wind‐driven movement along the ground surface (GS), is important for structure and dynamics of plant populations communities. However, how wind velocity (WV), GS, morphology influence secondary are unclear. We used a tunnel video camera to measure threshold WV (TWV) velocities (DV) dispersal. Diaspores seven Calligonum species with different appendages (wings, bristles, membranous balloon, wings + thorns) were determine TWV DV under...
Plant phenology is the most sensitive biological indicator that responds to climate change. Many models predict extreme precipitation events will occur frequently in arid areas of northwest China future, with an increase quantity and unpredictability rain. Future changes inevitably have a profound impact on plant areas. A recent study has shown after simulated enhancement precipitation, end time leaf unfolding period Nitraria tangutorum advanced, senescence was delayed. Under climatic...
Desert ecosystem CO2 exchange may play an important role in global carbon cycling. However, it is still not clear how the fluxes of shrub-dominated desert ecosystems respond to precipitation changes. We performed a 10-year long-term rain addition experiment Nitraria tangutorum northwestern China. In growing seasons 2016 and 2017, with three treatments (natural +0%, +50%, +100% annual average precipitation), gross photosynthesis (GEP), respiration (ER), net (NEE) were measured. The GEP...
Abstract Interception by plant canopies during wind dispersal can affect the final destination of diaspores. However, how interaction speed, canopy type and diaspore attributes affects interception diaspores has rarely been studied. We investigated for 29 species with different attributes, six types speeds in controlled experiments a tunnel. Shrub were speed but latter had greater influence on than former. At low wing loading large interception, whereas at high projection area influence. The...
Aims Our objective was to demonstrate the influence of leaf size on transpiration and temperature in arid regions. Methods Based energy material exchange theory results previous studies, we set up a single model combined with environmental conditions. Important findings Leaf decreased increasing stomatal resistance, but increased. decreasing radiation absorption rate same Moreover, width wind speed were important parameters understanding exchange. generally 0.1 m·s –1 resistance about 1 000...
Fruit setting and ripening are crucial in the reproductive cycle of many desert plant species, but their response to precipitation changes is still unclear. To clarify patterns, a long-term situ water addition experiment with five treatments, namely natural (control) plus an extra 25%, 50%, 75%, 100% local mean annual (145 mm), was conducted temperate northwestern China. A whole series fruiting events including onset, peak, end fruit locally dominant shrub, Nitraria tangutorum, were observed...
Abstract Plant crown can affect the seed dispersal process. Clarifying influence of plant type on kernel is important for predicting species distribution. However, impact different types has rarely been tested. To determine effect kernel, we conducted wind tunnel experiments in which investigated average distance, range, kurtosis and skewness 29 with diaspore traits (type appendage, mass, projected area, shape index, wing loading terminal velocity) under 3 speeds (2, 4 6 m•s-1) passing...
A Concurrent-wavelength Reconstruction Algorithm (CRA) based on multi-wavelength information fusion is proposed in this paper that aims to further improve the accuracy of Fluorescence Molecular Tomography (FMT) reconstruction. Combining multi-spectral data with FMT technology, 650 and 750 nm wavelengths near-infrared was used increase feature dominant 850 wavelength effectively. Principal component analysis, which can remove redundant achieve dimensionality reduction, then utilized extract...