A5049055712- Remote Sensing and Land Use
- Environmental Changes in China
- Environmental and Agricultural Sciences
- Climate change impacts on agriculture
- Crop Yield and Soil Fertility
- Plant Water Relations and Carbon Dynamics
- Rice Cultivation and Yield Improvement
- Plant responses to water stress
- Plant responses to elevated CO2
- Climate variability and models
- Soil and Unsaturated Flow
- Hydrology and Drought Analysis
- Urban Heat Island Mitigation
- Irrigation Practices and Water Management
- Regional Development and Environment
- Mass Spectrometry Techniques and Applications
- Soil Moisture and Remote Sensing
- Atmospheric Ozone and Climate
- Agroforestry and silvopastoral systems
- Peatlands and Wetlands Ecology
- Land Use and Ecosystem Services
- Education and Professional Development
- Complex Systems and Time Series Analysis
- Coastal wetland ecosystem dynamics
- Legal Education and Practice Innovations
China Meteorological Administration
2011-2023
Liaoning Meteorological Bureau
2012-2023
Wuhan Science and Technology Bureau
2023
Determining the effects of progressive drought (PD) on dry matter production, partitioning, and grain yield maize will help in designing a suitable strategy for water management. Though influences growth development have been investigated extensively, few them focused different duration occurrence stage PD formation maize. Six variations PD, form withholding irrigation varying lengths time from jointing or tasselling, were tested field, using mobile rain shelter, terms their aboveground...
Dry matter accumulation (DMA) and dry partitioning (DMP) are important physiological processes determining crop yield formation. Deep understanding of the DMA DMP their responses to drought limited by difficulty in acquiring total root biomass.Pot experiments with treatments quitting ceasing ear growth (QC) controlling soil water (WC) during vegetative (VP) reproductive (RP) stages maize (Zea mays) were conducted Jinzhou 2019 2020 investigate effects rewatering on DMW different organs.The...
This paper examined impacts of drought on both physiological and dry matter characteristics spring maize grown in Liaoning, China 2016. We compared responses matters various parts, yield components, leaf photosynthesis, transpiration to four levels: RD (no treatment), D1 (drought treatment between the 38th 65th day after sowing), D2 79th D3 53rd 93rd sowing). Results indicate that long-term either jointing period or tasseling had a severer impact components than short-term period. Moreover,...
Observational data on dry matter accumulation (DMA) and partitioning (DMP) from the experiment of maize sown four different dates in a normal year (2012) three drought years (2014, 2015, 2018) were analyzed to assess impact sowing date DMA DMP above-ground organs. The phenology was more closely related than drought. In year, amount organs differed slightly among dates, except for those at maturity, increased linearly after jointing: leaves stalks rapidly before tasselling milk stage,...
Based on the Landsat TM image August 12, 2010, a 4 × fishnet with 16 grids was built, and each grid 3.5 km× km. The changes of LST (land surface temperature), urban heat island (UHI) source sink areas their corresponding percentages in were analyzed order to find optimum configuration areas. relationships between remote sensing indices such as NDVI, NDBI MNDWI, LI (UHI intensity index), discussed. results indicated that percentage UHI area is greater than grid. are divided into 5 groups...
Accurate feature identification of drought disaster events is required for proper risk management in agriculture. This study improved the crop water deficit index (CWDI) by including daily meteorological, development stage, soil moisture content, and yield data 1981–2020 northeastern China. Two characteristic variables (drought duration intensity) were extracted using theory runs to produce (CWDIwp). Thresholds bivariate indicators also determined agricultural varying severity. A joint...
Changes in wetland ecosystems have a critical impact on the local ecology and species diversity. Different development scenarios policies are key factors influencing their changes. Therefore, we studied changes of wetlands middle Yangtze River basin (MYRB) 2001–2020, patch-generated land use simulation (PLUS) model random forest (RF) method were applied to predict analyze under different MYRB future (i.e.2035–2095). The results indicated that: (1) regions with high proportions concentrated...
Northeast China (NEC) is a region sensitive to climate change. However, the adoption of long-season maize cultivars in NEC has caused substantial yield increase under change conditions. It important determine whether such cultivar adoptions are effective throughout whole sustainably grain yield. In this study, phenological observations and meteorological data at six sites from 1981 2018 were used detect thermal time (TT) trends during growing period. TT, as parameter for measuring changes...
To investigate the influences of continuous decline soil water content during different growth stages on growth, development and yield maize, artificial control experiment with a rainout shelter were conducted, dynamic variations several physiological ecological indices maize analyzed, including plant height, leaf area index (LAI), photosynthesis characteristics, aboveground biomass, yield. The experimental factors considered in this field starting time duration control. Rainfall was...
For deeply understanding water consumption characteristics and disaster-causing mechanism of spring maize under drought stress, continuous no-water complementing for 40 days subsequent rewatering treatments were conducted in jointing (T1) tasseling (T2) stages 'Danyu 39'. In the meantime, leaf root potential, main variables associated with photosynthesis including net photosynthetic rate (Pn), transpiration (Tr), stomatal conduc-tance (gs), intercellular CO2 concentration(Ci) stem flow (SF)...
Roots are an important water transport pathway between soil and plant. Root uptake (RWU) plays a key role in heat exchange plants the atmosphere. Inaccurate RWU schemes land surface models one crucial reason for decreased model performance. Despite some types of functions being adopted models, none have been certified as suitable maize farmland ecosystems. Based on 2007–2009 data observed at agroecosystem field station Jinzhou, China, function root distribution (RD) Common Land Model (CoLM)...
AbstractThe root water uptake (RWU) process plays an important role in the terrestrial cycle by connecting soil environment to atmosphere. Inaccurate representation of RWU functions (...
Base on the Landsat TM/ETM+ data August of 2001 and 2010, surface urban heat island (SUHI) intensity prevailing wind direction belt using three sampling belts with 1 km width within third circle freeway Shenyang were calculated, its relationships land use types, source-sink distribution, normal differential vegetation index (NDVI), built-up (NDBI), modified water (MNDWI) analyzed. The results show that temperature (LST) SUHI increases from southeast to northwest for 3 belts. mean LST is...
As root water uptake (RWU) is an important link in the and heat exchange between plants ambient air, improving its parameterization key to enhancing performance of land surface model simulations. Although different types RWU functions have been adopted models, there no evidence as which scheme most applicable maize farmland ecosystems. Based on 2007–09 data collected at ecosystem field station Jinzhou, function Common Land Model (CoLM) was optimized with options light factors determining...
To understand the drought response mechanisms of dry matter partitioning maize, pot experiments under conditions were conducted during vegetative and reproductive growth periods maize. The aim was to calculate allometric relationships between weight different organs their responses drought. Results showed that roots, above-ground plant, total biomass gradually increased with maize approaching maturity a normal water supply. Drought period reinforced process after rewatering size-dependence...