Significant residual effects of wheat fertilization on greenhouse gas emissions in succeeding soybean growing season

2017 ◽  
Vol 169 ◽  
pp. 7-15 ◽  
Author(s):  
Xin Zhang ◽  
Jun Zhang ◽  
Chengyan Zheng ◽  
Dahai Guan ◽  
Shengming Li ◽  
...  
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Growing Season ◽  
Residual Effects ◽  
Gas Emissions

scholarly journals Effects of Rainfall on the Characteristics of Soil Greenhouse Gas Emissions in the Wetland of Qinghai Lake

Atmosphere ◽  
2022 ◽  
Vol 13 (1) ◽  
pp. 129
Author(s):  
Ziwei Yang ◽  
Kelong Chen ◽  
Fumei Liu ◽  
Zihan Che
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Chemical Properties ◽  
Co2 Flux ◽  
Growing Season ◽  
Physical And Chemical Properties ◽  
Emission Flux ◽  
Gas Emissions ◽  
Physical And Chemical ◽  
And Chemical Properties

Niaodao, a lakeside wetland, was used as the focus of this study to investigate the effect of rainfall changes on the greenhouse gas fluxes of wetland ecosystems. Wetland plots with different moisture characteristics (+25%, −25%, +75%, and −75% rainfall treatments and the control treatment (CK)) were constructed to observe in situ field greenhouse gas emissions at 11:00 and 15:00 (when the daily mean values were similar) in the growing season from May to August 2020 by static chamber–gas chromatography and to investigate the responses of wetland greenhouse gases to different rainfall treatments. The results showed the following: (1) The carbon dioxide (CO2) flux ranged from −49.409 to 374.548 mg·m−2·h−1. The mean CO2 emission flux was greater at 11:00 than at 15:00, and the +25% and +75% treatments exhibited substantially higher CO2 emissions. In addition, the CO2 flux showed a small peak at the beginning of the growing season when the temperature first started to rise. All treatments showed the effect of the CO2 source, and their effects were significantly different. (2) The methane (CH4) flux ranged from −213.839 to 330.976 µg·m−2·h−1 and exhibited an absorption state at 11:00 and an emission state at 15:00. The CH4 emission flux in August (the peak growing season) differed greatly between treatments and was significantly negatively correlated with the rainfall amount (p < 0.05). (3) The nitrous oxide (N2O) flux ranged from −10.457 to 16.878 µg·m−2·h−1 and exhibited a weak source effect throughout the growing season, but it was not significantly correlated with soil moisture; it was, however, negatively correlated with soil temperature. (4) The different treatments resulted in significant differences in soil physical and chemical properties (electrical conductivity, pH, total soil carbon, and total soil nitrogen). The rainfall enhancement treatments significantly improved soil physical and chemical properties.

scholarly journals Soil and grapevine leaf quality in organic vineyards of different ages in DO Rioja-Alavesa, northern Spain

2021 ◽  
Vol 11 ◽  
Author(s):  
Xavier Úbeda ◽  
Marcos Francos ◽  
Pablo Eguzkiza ◽  
Estevao B. Stefanuto
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Growing Season ◽  
Northern Spain ◽  
Gas Emissions ◽  
Leaf Quality ◽  
Organic Cultivation ◽  
Different Ages

The soil from three organically cultivated plots in Rioja Alavesa vineyards, specifically in Lanciego (Álava, Spain), and the foliage of their vines were analyzed. The aim of this study was to determine differences in soil and grapevine quality between different aged vineyards. The first 20 centimeters of the soil were sampled and leaves were collected during the growing season. The results show that the quality of the soil in the three plots was optimal and did not differ from reported values of soils from traditionally cultivated plots. The only element found at a lower concentration in the three plots and the leaves was iron. Organic cultivation of vineyards is a viable mode of cultivation and could help reduce greenhouse gas emissions and contamination by pesticides and fertilizers.

Low-Carbon Russia: Prospects after the Crisis

2009 ◽  
pp. 107-120 ◽  
Author(s):  
I. Bashmakov
Keyword(s):  
Economic Growth ◽  
Potential Energy ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Low Carbon ◽  
Modeling Tools ◽  
Gas Emissions ◽  
Scenario Approach

On the eve of the worldwide negotiations of a new climate agreement in December 2009 in Copenhagen it is important to clearly understand what Russia can do to mitigate energy-related greenhouse gas emissions in the medium (until 2020) and in the long term (until 2050). The paper investigates this issue using modeling tools and scenario approach. It concludes that transition to the "Low-Carbon Russia" scenarios must be accomplished in 2020—2030 or sooner, not only to mitigate emissions, but to block potential energy shortages and its costliness which can hinder economic growth.

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