Integrated assessment of carbon footprint, energy budget and net ecosystem economic efficiency from rice fields under different tillage modes in central China

2021 ◽  
Vol 295 ◽  
pp. 126398
Author(s):  
Shi-hao Li ◽  
Li-jin Guo ◽  
Cou-gui Cao ◽  
Cheng-fang Li
Keyword(s):  
Carbon Footprint ◽  
Energy Budget ◽  
Economic Efficiency ◽  
Integrated Assessment ◽  
Rice Fields ◽  
Central China

scholarly journals Energy budget and carbon footprint in a wheat and maize system under ridge furrow strategy in dry semi humid areas

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Changjiang Li ◽  
Shuo Li
Keyword(s):  
Carbon Footprint ◽  
Energy Budget ◽  
Agricultural Development ◽  
Energy Use ◽  
Cropping System ◽  
Energy Output ◽  
Net Energy ◽  
Energy Productivity ◽  
Carbon Efficiency ◽  
Net Returns

AbstractThe well-irrigated planting strategy (WI) consumes a large amount of energy and exacerbates greenhouse gas emissions, endangering the sustainable agricultural production. This 2-year work aims to estimate the economic benefit, energy budget and carbon footprint of a wheat–maize double cropping system under conventional rain-fed flat planting (irrigation once a year, control), ridge–furrows with plastic film mulching on the ridge (irrigation once a year, RP), and the WI in dry semi-humid areas of China. Significantly higher wheat and maize yields and net returns were achieved under RP than those under the control, while a visible reduction was found for wheat yields when compared with the WI. The ratio of benefit: cost under RP was also higher by 10.5% than that under the control in the first rotation cycle, but did not differ with those under WI. The net energy output and carbon output followed the same trends with net returns, but the RP had the largest energy use efficiency, energy productivity carbon efficiency and carbon sustainability among treatments. Therefore, the RP was an effective substitution for well–irrigated planting strategy for achieving sustained agricultural development in dry semi-humid areas.

scholarly journals EFISIENSI EKONOMI SISTEM TANAM LEGOWO PADI SAWAH STUDI KASUS DI KECAMATAN TOMOHON BARAT KOTA TOMOHON

2019 ◽  
Vol 15 (3) ◽  
pp. 553
Author(s):  
Djuru Masrib Pandensolang ◽  
Vicky Ventje Johan Panelewen ◽  
Wenny ., Tilaar
Keyword(s):  
Economic Efficiency ◽  
Rice Production ◽  
Rice Fields ◽  
Survey Method ◽  
Land Area ◽  
Factors Affecting ◽  
North Sulawesi ◽  
Production Factors ◽  
Planting System ◽  
System Analyzing

This study aims to analyze how much profit is gained by applying the Legowo row planting system, analyzing the factors of production that affect rice production by applying the Legowo row planting system, analyzing whetherthe use of production factors allocated by farmers to the Legowo planting system economically already efficient. The study was conducted from January to April 2019 in Tomohon Barat Subdistrict, Tomohon City, North Sulawesi Province. The research location was chosen purposively with the consideration that West Tomohon Subdistrict was the center of rice production in Tomohon City with a total area of 447.40 ha of rice fields ( 52% of the total area of rice fields in Tomohon City). The method used in this study is a survey method in the Kelurahan that has paddy fields in the West Tomohon District with interview techniques to respondent farmers. Determination of the sample is done by quota sampling method as many as 50 people taken from 7 (seven) villages in the District of West Tomohon by considering the area of land and the purpose of farming (commercial farm). The variables to be examined in this study are age, education, business experience, group membership, land area, seeds, fertilizer (Urea, SP36 and NPK), labor (HKSP), production, and price. The results showed that the benefits of lowland rice farming with the application of the legowo planting system, farmers in Tomohon Barat Subdistrict, Tomohon City were not yet maximum and had not yet reached economic efficiency, production factors affecting rice production were land area, seeds, fertilizer (Urea, SP 36 and NPK Phonska) and labor, the use of production factors of land area, fertilizers(Urea, SP 36 and NPK Phonska) have not reached economic efficiency, the use of seed production factors and labor is inefficient.*eprm*

Processes of nitrogen loss from fertilizers applied to flooded rice fields on a calcareous soil in north-central China

1988 ◽  
Vol 18 (2) ◽  
pp. 101-115 ◽  
Author(s):  
Z. L. Zhu ◽  
G. X. Cai ◽  
J. R. Simpson ◽  
S. L. Zhang ◽  
D. L. Chen ◽  
...  
Keyword(s):  
Calcareous Soil ◽  
Nitrogen Loss ◽  
Rice Fields ◽  
Central China ◽  
North Central ◽  
Flooded Rice

scholarly journals Analysis of Efficiency of Use of Factors Production Rice Farming Polluted and Unpolluted By Slaughterhouses Waste In Penggaron Kidul Semarang

HABITAT ◽  
2021 ◽  
Vol 32 (1) ◽  
pp. 17-25
Author(s):  
Ashilah Lubis ◽  
Bambang Setiawan ◽  
Edy Prasetyo
Keyword(s):  
Economic Efficiency ◽  
Linear Regression Analysis ◽  
Rice Production ◽  
T Test ◽  
Rice Fields ◽  
Survey Method ◽  
Land Area ◽  
Dummy Variable ◽  
Production Factors ◽  
Method Analysis

Penggaron Kidul is a village in Pedurungan that owns rice fields located around Slaughterhouse (RPH). It causes the rice fields polluted by waste and makes the rice productivity is not optimal. This research aimed to analyze the production factors that affected the amount of rice production, the use of production factors level, and the economic efficiency differences in the use of production factors in polluted and unpolluted fields. The survey method was employed in this research by interviewing the members of Dharma Tani Farmers using a questionnaire. The sampling method used was proportionate stratified random sampling used two populations with 80 people. The number of samples was 66 respondents categorized into 33 farmers (landowners of polluted fields) and 33 farmers (landowners of unpolluted fields). The data analysis conducted using a linear regression analysis method, analysis of Independent Sample T-test, and analysis of technical and economic efficiency then tested using analysis One Sample T-test. The result showed that the use of the land area, labor, and dummy variable of location significantly affected the amount of rice production while the factors of seed, fertilizer, and pesticides did not significantly affect the amount of rice production. The production factors of fertilizer and labor in polluted land had no different from unpolluted fields while the factors of seed and pesticides in polluted fields were different from unpolluted fields. Meanwhile, the production factors of seeds and pesticides in polluted fields were greater than in unpolluted fields. The use of production factors of land area, seeds, fertilizers, pesticides, and labor was technically and economically inefficient. The efficiency economic of production factors in polluted fields is different from unpolluted fields which unpolluted fields are more efficient than polluted fields.

scholarly journals Mapping Ratoon Rice Planting Area in Central China Using Sentinel-2 Time Stacks and the Phenology-Based Algorithm

2020 ◽  
Vol 12 (20) ◽  
pp. 3400
Author(s):  
Shishi Liu ◽  
Yuren Chen ◽  
Yintao Ma ◽  
Xiaoxuan Kong ◽  
Xinyu Zhang ◽  
...  
Keyword(s):  
Vegetation Index ◽  
Cropping Systems ◽  
Hubei Province ◽  
Paddy Rice ◽  
Rice Fields ◽  
Central China ◽  
Yellowness Index ◽  
Productivity Cost ◽  
Rice Cropping Systems ◽  
Sentinel 2

Mapping rice cropping systems is important for grain yield prediction and food security assessments. Both single- and double-season rice are the dominant rice systems in central China. However, because of increasing labor shortages and high costs, there has been a gradual decline in double-season rice. Ratoon rice (RR) has been proposed as an alternative system that balances the productivity, cost, and labor requirements of rice cultivation. RR has been expanding in central China, encouraged by the improved cultivars, machinery, and favorable policies. However, to our knowledge, the distribution of RR has not been mapped with remote sensing techniques. This study developed a phenology-based algorithm to map RR at a 10 m resolution in Hubei Province, Central China, using dense time stacks of Sentinel-2 images (cloud cover <80%) in 2018. The key in differentiating RR from the other rice cropping systems is through the timing of maturity. We proposed to use two contrast vegetation indices to identify RR fields. The newly-developed yellowness index (YI) calculated with the reflectance of blue, green, and red bands was used to detect the ripening phase, and the enhanced vegetation index (EVI) was used to detect the green-up of the second-season crop to eliminate the misclassification caused by stubbles left in the field. The RR map demonstrated that RR was mainly distributed in the low alluvial plains of central and southern Hubei Province. The total planting area of RR in 2018 was 2225.4 km2, accounting for 10.03% of the total area of paddy rice fields. The overall accuracy of RR, non-RR rice fields, and non-rice land cover types was 0.76. The adjusted overall accuracy for RR and non-RR was 0.91, indicating that the proposed YI and the phenology-based algorithm could accurately identify RR fields from the paddy rice fields.

Energy budget and carbon footprint in a no-till and mulch based rice–mustard cropping system

2018 ◽  
Vol 191 ◽  
pp. 144-157 ◽  
Author(s):  
Gulab Singh Yadav ◽  
Anup Das ◽  
Rattan Lal ◽  
Subhash Babu ◽  
Ram Swaroop Meena ◽  
...  
Keyword(s):  
Carbon Footprint ◽  
Energy Budget ◽  
Cropping System ◽  
No Till

How Will Foreign Trade Affect Green Economic Efficiency in Sub-developed Region? An Empirical Research Based on the Data From Central China

2021 ◽  
Author(s):  
Jianqing Zhang ◽  
Enze Gong ◽  
Cuizehao Zhao
Keyword(s):  
Foreign Trade ◽  
Economic Efficiency ◽  
Industrial Development ◽  
Negative Impact ◽  
Positive Impact ◽  
Policy Implications ◽  
Central China ◽  
Industrial Specialization ◽  
Empirical Tests ◽  
Negative Impacts

Abstract Foreign trade in sub-developed regions may lead to serious environmental problems. Impact of foreign trade in sub-developed regions on green economic efficiency and its possible impact channels are qualitatively analyzed, empirical tests are conducted based on the data of 80 Prefecture-level cities in Central China. Results show that: 1. Foreign trade of Central China will have a significant direct negative impact on green economic efficiency, which is not conducive to green growth. 2. Expanding the scale of foreign trade in Central China will stimulate industries agglomerate to big cities and promote the level of industrial specialization within the region, which will have indirect negative impacts on green economic efficiency. 3. Foreign trade in Central China will improve the policy environment for industrial development, then have an indirect positive impact on green economic efficiency, whereas its impact on technological innovation is not significant. 4. Impact of foreign trade in different cities in Central China on green economic efficiency are heterogeneous from the perspective of spatial heterogeneity and from the perspective of city characteristic heterogeneity, and when environmental regulation exceeds a certain threshold, the negative impact of foreign trade on green economic efficiency will turn to positive. Policy implications are proposed.

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