Single rice growth period was prolonged by cultivars shifts, but yield was damaged by climate change during 1981-2009 in China, and late rice was just opposite

2013 ◽  
Vol 19 (10) ◽  
pp. 3200-3209 ◽  
Author(s):  
Fulu Tao ◽  
Zhao Zhang ◽  
Wenjiao Shi ◽  
Yujie Liu ◽  
Dengpan Xiao ◽  
...  
Keyword(s):  
Climate Change ◽  
Growth Period ◽  
Rice Growth ◽  
Single Rice ◽  
Late Rice

Response of rice production to climate change based on self-adaptation in Fujian Province

2017 ◽  
Vol 155 (5) ◽  
pp. 751-765 ◽  
Author(s):  
M. JIANG ◽  
C. L. SHI ◽  
Y. LIU ◽  
Z. Q. JIN
Keyword(s):  
Climate Change ◽  
Rice Production ◽  
The Self ◽  
Fujian Province ◽  
Self Adaptation ◽  
Single Rice ◽  
Double Rice ◽  
Late Rice ◽  
North Western ◽  
Early Rice

SUMMARYClimate change has greatly affected agricultural production, and will lead to further changes in cropping system, varietal type and cultivation techniques for each region. The potential effects of climate change on rice production in Fujian Province, China, were explored in the current study with CERES-Rice model and climate-change scenarios, based on the self-adaptation of rice production. The results indicated that simulated yields of early rice in the double-rice region in south-eastern Fujian under scenarios A2, B2 and A1B increased by 15·9, 18·0 and 19·2%, respectively, and correspondingly those of late rice increased by 9·2, 7·4 and 7·4% when self-adaptation adjustment was considered, compared to scenarios without that consideration. In the double-rice region in north-western Fujian, simulated yields of early rice increased by 21·2, 20·5 and 18·9% and those of late rice by 14·7, 14·8 and 7·2% under scenarios A2, B2 and A1B, respectively, when self-adaptation was considered, compared to without consideration. Similar results were obtained for the single-rice region in the mountain areas of north-western Fujian, correspondingly increasing by 4·9, 5·0 and 2·9% when self-adaptation was considered compared to when it was not. In this single-rice region, double rice might be grown in the future at the Changting site under scenarios A1 and B2. When the self-adaptation adjustment was considered, the simulated overall output of rice crops in Fujian under scenarios A2, B2 and A1B increased by 5·9, 5·2 and 5·1%, respectively. Thus, more optimistic results were obtained when the self-adaptation ability of rice production was considered.

Characteristics of extreme rainfall in South China during the late rice growth period

2020 ◽  
Vol 112 (6) ◽  
pp. 5105-5114
Author(s):  
Liji Wu ◽  
Fei Hu ◽  
Shenggang Pan
Keyword(s):  
South China ◽  
Growth Period ◽  
Extreme Rainfall ◽  
Rice Growth ◽  
Late Rice

Cadmium and arsenic accumulation during the rice growth period under in situ remediation

2019 ◽  
Vol 171 ◽  
pp. 451-459 ◽  
Author(s):  
Jiao-feng Gu ◽  
Hang Zhou ◽  
Hui-ling Tang ◽  
Wen-tao Yang ◽  
Min Zeng ◽  
...  
Keyword(s):  
Growth Period ◽  
In Situ Remediation ◽  
Rice Growth ◽  
Arsenic Accumulation

scholarly journals Impacts of climate warming, cultivar shifts, and phenological dates on rice growth period length in China after correction for seasonal shift effects

2019 ◽  
Vol 155 (1) ◽  
pp. 127-143 ◽  
Author(s):  
Tao Ye ◽  
Shuo Zong ◽  
Axel Kleidon ◽  
Wenping Yuan ◽  
Yao Wang ◽  
...  
Keyword(s):  
Climate Warming ◽  
Growth Period ◽  
Period Length ◽  
Rice Growth ◽  
Seasonal Shift ◽  
Phenological Dates

Electric Vehicle Forecasting for China from 2011 to 2050 Based on Scenario Analysis

2011 ◽  
Vol 128-129 ◽  
pp. 846-849
Author(s):  
Shi Jun Fu ◽  
Yu Long Ren
Keyword(s):  
Climate Change ◽  
Internal Combustion Engine ◽  
Electric Vehicle ◽  
Growth Model ◽  
Electric Vehicles ◽  
Scenario Analysis ◽  
Combustion Engine ◽  
Growth Period ◽  
The Difference ◽  
New Industry

With climate change being growing concerns, the development of EV (Electric Vehicles) has taken on an accelerated pace. This paper is to forecast China’s EV stock from 2011 to 2050 based on the double species growth model. We elaborate two orbits according to two scenarios: with vehicle stock being 200 and 300 per thousand people at 2050. These orbits reveals that, China’s EVs development has a golden stage which will last 10 to 11 years; And before this booming stage, there is a slowly growth period which will last 7 to 8 years. Furthermore, under each scenario, the difference between EVs and ICEVs (Internal Combustion Engine Vehicles) stock at 2030 is 4.69% to 6.77%, which confirms that China’s ambitious EVs program may be realized if government sets strong policy supports on this new industry persistently.

scholarly journals Long-term standardized forest phenology in Sweden: a climate change indicator

2019 ◽  
Author(s):  
Ola Langvall ◽  
Mikaell Ottosson Löfvenius
Keyword(s):  
Climate Change ◽  
Quantitative Methods ◽  
Food Resource ◽  
Growth Period ◽  
Phase Changes ◽  
Gradual Change ◽  
Active Growth ◽  
Statistical Precision ◽  
Active Growth Period

Abstract Because climate change alters patterns of vegetative growth, long-term phenological measurements and observations can provide important data for analyzing its impact. Phenological assessments are usually made as records of calendar dates when specific phase changes occur. Such assessments have benefits and are used in Citizen Science monitoring. However, these kinds of data often have low statistical precision when describing gradual changes. Frequent monitoring of the phenological traits of forest trees and berries as they undergo gradual change is needed to acquire good temporal resolution of transitions relative to other factors, such as susceptibility to frosts, insects, and fungi, and the use of berries as a food resource. Intensive weekly monitoring of the growth of apical and branch buds and the elongation of shoots and leaves on four tree species, and the abundance of flowers and berries of bilberry and lingonberry, has been performed in Sweden since 2006. Here, we present quantitative methods for interpolating such data, which detail the gradual changes between assessments in order to describe average rates of development and amount of interannual variation. Our analysis has shown the active growth period of trees to differ with latitude. We also observed a change in the timing of the maximum numbers of ripening berries and their successive decline. Data from tree phenology assessments can be used to recommend best forestry practice and to model tree growth, while berry data can be used to estimate when food resources for animals are most available.

scholarly journals Influence mechanism of climate change over crop growth and water demands for wheat-rice system of Punjab, Pakistan

2020 ◽  
Author(s):  
Mirza Junaid Ahmad ◽  
Gun-Ho Cho ◽  
Sang-Hyun Kim ◽  
Seulgi Lee ◽  
Bashir Adelodun ◽  
...  
Keyword(s):  
Climate Change ◽  
Temperature Rise ◽  
Growth Period ◽  
Crop Growth ◽  
Crop Failure ◽  
Water Requirements ◽  
Security Issues ◽  
Agriculture Sector ◽  
Water Demands ◽  
The Future

Abstract Conceptualizing the climate change perspective of crop growth and evapotranspiration (ETc) rates and subsequent irrigation water requirements (IWR) is necessary for sustaining the agriculture sector and tackling food security issues in Pakistan. This article projects the future growth periods and water demands for the wheat-rice system of Punjab. Intense and hotter transitions in the future thermal regimes and erratic monsoon rainfall increments were envisaged. The crop growth rates were accelerated by the probable temperature rise resulting in shortened growth periods. The temperature rise increased the reference evapotranspiration rates; however, the future ETc declined due to reduced growth period and net radiation. Highly unpredictable, but mostly increasing, cumulative seasonal and annual rainfalls were indicative of more effective rainfalls during the future crop seasons. Reduced ETc and increments in seasonal effective rainfalls gave rise to the declining IWR for both crops. The study findings seemingly undermined the harmful climate change influences on the water requirements of the wheat-rice system of Punjab but alarmingly shortening of growth periods indicates a higher crop failure tendency under the projected future thermal regime.

scholarly journals Assessment of Rice Developmental Stage Using Time Series UAV Imagery for Variable Irrigation Management

Sensors ◽  
2020 ◽  
Vol 20 (18) ◽  
pp. 5354
Author(s):  
Chin-Ying Yang ◽  
Ming-Der Yang ◽  
Wei-Cheng Tseng ◽  
Yu-Chun Hsu ◽  
Guan-Sin Li ◽  
...  
Keyword(s):  
Irrigation System ◽  
Irrigation Management ◽  
Growth Period ◽  
Water Shortage ◽  
Water Saving ◽  
Growth Stages ◽  
Rice Growth ◽  
Final Yield ◽  
Uav Images ◽  
Sequential Images

Rice is one of the three major crops in the world and is the major crop in Asia. Climate change and water resource shortages may result in decreases in rice yields and possible food shortage crises. In this study, water-saving farming management was tested, and IOT field water level monitoring was used to regulate water inflow automatically. Plant height (PH) is an important phenotype to be used to determine difference in rice growth periods and yields using water-saving irrigation. An unmanned aerial vehicle (UAV) with an RGB camera captured sequential images of rice fields to estimate rice PH compared with PH measured on site for estimating rice growth stages. The test results, with two crop harvests in 2019, revealed that with adequate image calibration, the correlation coefficient between UAV-PH and field-PH was higher than 0.98, indicating that UAV images can accurately determine rice PH in the field and rice growth phase. The study demonstrated that water-saving farming is effective, decreasing water usage for the first and second crops of 2019 by 53.5% and 21.7%, respectively, without influencing the growth period and final yield. Coupled with an automated irrigation system, rice farming can be adaptive to water shortage situations.

scholarly journals Simulating Wheat Production Potential Under Near-future Climate Change in Arid Regions of Northeast Iran

2022 ◽  
Author(s):  
Seyed Farhad Saberali ◽  
Zahra Shirmohammadi-Aliakbarkhani ◽  
Hossein Nastari Nasrabadi
Keyword(s):  
Climate Change ◽  
Winter Wheat ◽  
Water Scarcity ◽  
Arid Regions ◽  
Growth Period ◽  
Future Climate ◽  
Future Climate Change ◽  
Wheat Production ◽  
Near Future ◽  
Northeast Iran

Abstract Water scarcity is the key challenge in arid regions, which exacerbates under climate change (CC) and must be considered to assess the impacts of CC on cropping systems. A climate-crop modelling approach was employed by using the CSM-CERES-Wheat model in some arid regions of northeast Iran to project the effects of CC on irrigated wheat production. Current climate data for 1990-2019 and climate projections of three climate models for 2021–2050 under RCP4.5 and RCP8.5 emission scenarios were used to run the crop model. Two irrigation scenarios with different irrigation efficiencies were also simulated to investigate the impacts of water scarcity associated with changing climate and irrigation management on wheat productivity. Results indicated that mean temperature is projected to increase at the rates of 1.74–2.73 °C during the reproductive growth period of winter wheat over the study areas. The precipitation projections also indicated that the precipitation rates would decrease over most of the wheat-growing period. The length of the vegetative growth period will extend in some regions and shorten in others under the near future climate. However, the grain filling duration will reduce by about 2–4 days across all regions. The mean seasonal PET is expected to decrease by about 11 mm from 2021 to 2050 over the study areas. A mean overall reduction in winter wheat yield due to future climate conditions would be about 12.3 % across the study areas. However, an increase of 15-30% in the irrigation efficiency will be able to offset yield reductions associated with limited water supply under future climate scenarios. The results suggest that CC will exacerbate limited irrigation water availability, so implementing high-efficiency irrigation systems should be a priority to adapt to climate change in an arid cropping system.

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