Different responses of soil carbon chemistry to fertilization regimes in the paddy soil and upland soil were mainly reflected by the opposite shifts of OCH and alkyl C

Geoderma ◽  
2021 ◽  
Vol 385 ◽  
pp. 114876
Author(s):  
Dandan Li ◽  
Kailou Liu ◽  
Qinghai Huang ◽  
Jiabao Zhang ◽  
Bingzi Zhao
2013 ◽  
Vol 130 ◽  
pp. 42-51 ◽  
Author(s):  
X. Yan ◽  
H. Zhou ◽  
Q.H. Zhu ◽  
X.F. Wang ◽  
Y.Z. Zhang ◽  
...  

2020 ◽  
Vol 10 (5) ◽  
pp. 965-979
Author(s):  
Tianguo Li ◽  
Xiang Li ◽  
Yong Liang ◽  
Mingrui Li ◽  
Ming Jiang ◽  
...  

2019 ◽  
Vol 225 (6) ◽  
pp. 2368-2379
Author(s):  
Zhengkun Hu ◽  
Xiaoyun Chen ◽  
Junneng Yao ◽  
Chunwu Zhu ◽  
Jianguo Zhu ◽  
...  

2016 ◽  
Vol 50 (4) ◽  
pp. 319-327 ◽  
Author(s):  
Shinichi KOYAMA ◽  
Takuto KATAGIRI ◽  
Kazunori MINAMIKAWA ◽  
Morio KATO ◽  
Hisayoshi HAYASHI

Agronomy ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2057
Author(s):  
Sehrish Ali ◽  
Kailou Liu ◽  
Waqas Ahmed ◽  
Huang Jing ◽  
Muhammad Qaswar ◽  
...  

A long-term experiment (38 years) was conducted to elucidate the effects of long-term N addition on the net N mineralization in both paddy and upland soils, based on their initial soil N status, with and in connection with soil microbial biomass and N cycling extracellular enzyme activities. Two treatments without N addition CK (No fertilizer) and K (inorganic potassium fertilizer) and two treatments with N addition N (inorganic nitrogen fertilizer) and NK (inorganic nitrogen and potassium fertilizer) were placed in incubation for 90 days. Results showed that the total N and soil organic carbon (SOC) contents were higher in the treatments with N application compared to the treatments without N in both paddy and upland soils. The SOC content of paddy soil was increased relative to upland soil by 56.2%, 45.7%, 61.1% and 62.2% without N (CK, K) and with N (N and NK) treatments, respectively. Site-wise, total N concentration in paddy soil was higher by 0.06, 0.10, 0.57 and 0.60 times under the CK, K, N and NK treatments, respectively, compared with upland soil. In paddy soil, soil microbial biomass nitrogen (SMBN) was higher by 39.6%, 2.77%, 29.5% and 31.4%, and microbial biomass carbon (SMBC) was higher by 11.8%, 11.9%, 10.1% and 12.3%, respectively, in CK, K, N and NK treatment, compared with upland soil. Overall, compared to upland soil, the activities of leucine-aminopeptidase (LAP) were increased by 31%, 18%, 20% and 11%, and those of N-acetyl-b-D-glucosaminidase (NAG) were increased by 70%, 21%, 13% and 18% by CK, K, N and NK treatments, respectively, in paddy soil. A significantly linear increase was found in the NO3−-N and NH4+-N concentrations during the 90 days of the incubation period in both soils. NK treatment showed the highest N mineralization potential (No) along with mineralization rate constant, k (NMR) at the end of the incubation. SMBC, SMBN, enzyme activities, NO3−-N and NH4+-N concentrations and the No showed a highly significant (p ≤ 0.05) positive correlation. We concluded that long-term N addition accelerated the net mineralization by increasing soil microbial activities under both soils.


PLoS ONE ◽  
2019 ◽  
Vol 14 (6) ◽  
pp. e0218195 ◽  
Author(s):  
Muhammad Qaswar ◽  
Waqas Ahmed ◽  
Huang Jing ◽  
Fan Hongzhu ◽  
Shi Xiaojun ◽  
...  

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Yalong Liu ◽  
Tida Ge ◽  
Kees Jan van Groenigen ◽  
Yuanhe Yang ◽  
Ping Wang ◽  
...  

AbstractRice paddies account for ~9% or the world’s cropland area and are characterized by environmental conditions promoting soil organic carbon storage, methane emissions and to a lesser extent nitrous oxide emissions. Here, we synthesize data from 612 sites across 51 countries to estimate global carbon stocks in paddy soils and determine the main factors affecting paddy soil carbon storage. Paddy soils (0–100 cm) contain 18 Pg carbon worldwide. Paddy soil carbon stocks decrease with increasing mean annual temperature and soil pH, whereas mean annual precipitation and clay content had minor impacts. Meta-analysis shows that paddy soil carbon stocks can be increased through several management practices. However, greenhouse gas mitigation through paddy soil carbon storage is generally outweighed by increases in methane and nitrous oxide emissions. Our results emphasize the key role of paddies in the global carbon cycle, and the importance of paddy management in minimizing anthropogenic greenhouse gas emissions.


2013 ◽  
Vol 32 (4) ◽  
pp. 260-267
Author(s):  
Jum-Soon Kang ◽  
Jeong-Min Suh ◽  
Hyun-Moo Shin ◽  
Jae-Hwan Cho ◽  
Chang-Oh Hong

2012 ◽  
Vol 112 (1-3) ◽  
pp. 229-243 ◽  
Author(s):  
Daniela F. Cusack ◽  
Oliver A. Chadwick ◽  
Thegn Ladefoged ◽  
Peter M. Vitousek

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