|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Carbon Dioxide and Nitrous Oxide Emissions from Naturally Occurring Sulfate-Based Saline Soils at Different Moisture Contents显示文摘Soil salinization may negatively affect microbial processes related to carbon dioxide(CO_2) and nitrous oxide(N_2O) emissions. A short-term laboratory incubation experiment was conducted to investigate the effects of soil electrical conductivity(EC) and moisture content on CO_2 and N_2O emissions from sulfate-based natural saline soils. Three separate 100-m long transects were established along the salinity gradient on a salt-affected agricultural field at Mooreton, North Dakota, USA. Surface soils were collected from four equally spaced sampling positions within each transect, at the depths of 0–15 and 15–30 cm. In the laboratory, artificial soil cores were formed combining soils from both the depths in each transect, and incubated at 60% and 90% water-filled pore space(WFPS) at 25?C. The measured depth-weighted EC of the saturated paste extract(EC_e) across the sampling positions ranged from 0.43 to 4.65 dS m^(-1). Potential nitrogen(N) mineralization rate and CO_2 emissions decreased with increasing soil EC_e, but the relative decline in soil CO_2 emissions with increasing ECe was smaller at 60% WFPS than at 90% WFPS. At 60% WFPS, soil N_2O emissions decreased from 133 μg N_2O-N kg^(-1) soil at EC_e < 0.50 dS m^(-1) to 72 μg N_2O-N kg^(-1) soil at EC_e = 4.65 dS m^(-1). In contrast, at 90% WFPS,soil N_2O emissions increased from 262 μg N_2O-N kg^(-1) soil at EC_e = 0.81 dS m^(-1) to 849 μg N_2O-N kg^(-1) soil at EC_e = 4.65 dS m^(-1), suggesting that N_2O emissions were linked to both soil ECe and moisture content. Therefore, spatial variability in soil EC_e and pattern of rainfall over the season need to be considered when up-scaling N_2O and CO_2 emissions from field to landscape scales. | Resham THAPA Amitava CHATTERJEE Abbey WICK Kirsten BUTCHER | 2017 | Pedosphere2017，27，5： | 5 |
| 2 | Saline-Sodic Soils:Potential Sources of Nitrous Oxide and Carbon Dioxide Emissions?显示文摘Increasing salt-affected agricultural land due to low precipitation,high surface evaporation,irrigation with saline water,and poor cultural practices has triggered the interest to understand the influence of salt on nitrous oxide(N_2O) and carbon dioxide(CO_2)emissions from soil.Three soils with varying electrical conductivity of saturated paste extract(EC_e)(0.44-7.20 dS m^(-1)) and sodium adsorption ratio of saturated paste extract(SARe)(1.0-27.7),two saline-sodic soils(S2 and S3) and a non-saline,non-sodic soil(S1),were incubated at moisture levels of 40%,60%,and 80%water-filled pore space(WFPS) for 30 d,with or without nitrogen(N)fertilizer addition(urea at 525 μg g^(-1) soil).Evolving CO_2 and N2 O were estimated by analyzing the collected gas samples during the incubation period.Across all moisture and N levels,the cumulative N_2O emissions increased significantly by 39.8%and 42.4%in S2 and S3,respectively,compared to S1.The cumulative CO_2 emission from the three soils did not differ significantly as a result of the complex interactions of salinity and sodicity.Moisture had no significant effect on N_2O emissions,but cumulative CO_2 emissions increased significantly with an increase in moisture.Addition of N significantly increased cumulative N_2O and CO_2 emissions.These showed that saline-sodic soils can be a significant contributor of N_2O to the environment compared to non-saline,non-sodic soils.The application of N fertilizer,irrigation,and precipitation may potentially increase greenhouse gas(N2O and CO_2) releases from saline-sodic soils. | Upasana GHOSH Resham THAPA Thomas DESUTTER HE Yangbo Amitava CHATTERJEE | 2017 | Pedosphere2017，27，1： | 5 |
| 3 | A new social and momentum component adaptive PSO algorithm for image segmentation显示文摘 | Akhilesh Chander Amitava Chatterjee Patrick Siarry | | 0，，05： | 1 |
| 4 | A hybrid approach for design of stable adaptive fuzzy controllers employing Lyapunov theory and particle swarm optimization显示文摘 | Kaushik Das Sharma Amitava Chatterjee Anjan Rakshit | 2009 | IEEE Transactions on Fuzzy Systems2009，17，2： | 1 |
| 5 | An adaptive bacterial foraging algorithm for fuzzy entropy based image segmentation 显示文摘 | Sanyal Nandita Chatterjee Amitava Munshi Sugata | 2011 | Expert Systems with Ap- plications2011，38，15： | 1 |
| 6 | Soil carbon pools of six ecological regions of the United States显示文摘Mineralisable soil organic carbon(SOC)pools vary with ecosystem type in response to changes in climate,vegetation and soil properties.Understanding the effect of climate and soil factors on SOC pools is critical for predicting change over time.Surface soil samples from six ecoregions of the United States were analyzed for permanganate oxidizable C(KMnO4-C)and mineralizable C pools.Variations of SOC ranged from 7.9 mg g^-1(Florida site)to 325 mg g^-1(Hawaii site).Mineralisable C pools and KMnO4-C were highest in soils from the Hawaii site.Mean annual precipitation explains SOC and resistant C pool variations.Clay content was related to mineralisable active C pools and bacterial abundance.Mean annual precipitation and clay content are potential variables for predicting changes in SOC pools at large spatial scales. | Amitava Chatterjee | 2020 | Journal of Forestry Research2020，31，5： | 1 |
| 7 | Cross-crrelation Aided Support Vector Machine Classifier for Classification of EEG Signals 显示文摘 | CHANDAKA Suryannarayana CHATTERJEE Amitava MUNSHI Sugata | 2009 | Expert Systems with Applications2009，36，2： | 1 |
| 8 | A hybrid cooperative-comprehensive learning based PSO algorithm for image segmentation using multilevel thresholding显示文摘 | Madhubnnti Maitra Amitava Chatterjee | | 0，，02： | 1 |
| 9 | Effect of curcumin on gelatinase A (MMP-2) activity in B16F10 melanoma cells显示文摘 | Aniruddha Banerji Jayati Chakrabarti Aparna Mitra Amitava Chatterjee | 2004 | Cancer Letters2004，，2： | 1 |
| 10 | A hybrid eooperative-comprehensive learning based PSO algorithm for image segmentation using multilevel thresholding 显示文摘 | Madhubanti Maitra Amitava Chatterjee | 2008 | Expert Systems with Applications2008，34，2： | 1 |
| 11 | Rapid expression and activation of MMP-2 and MMP-9 upon exposure of human breast cancer cells (MCF-7) to fibronectin in serum free medium显示文摘 | Shamik Das Aniruddha Banerji Eva Frei Amitava Chatterjee | 2007 | Life Sciences2007，，9： | 1 |
| 12 | A hybrid cooperative-comprehensivelearing based PSO algorithm for image segmentation using multilevel thresholding显示文摘 | Madhubanti Maitra Amitava Chatterjee | 2007 | Expert Systems with pplications2007，34，2： | 1 |
| 13 | An adaptive bacterial foraging algorithm for fuzzy entropy based image segmentation显示文摘 | Nandita Sanyal Amitava Chatterjee Sugata Munshi | 2011 | Expert Systems With Applications2011，，12： | 1 |
| 14 | A novel local extrema based gravitational search algorithm and its applicati on in face recogni- tion using one image per class显示文摘 | Tapabrata Chakraborti Kaushik Das Sharma Amitava Chatterjee | 2014 | Engineering Appli- cations of Artificial Intelligence2014，，34： | 1 |
| 15 | 图像处理中的计算智能显示文摘基于计算智能的技术作为可行的、数学工具已经有超过十年的时间,它们广泛地应用于许多系统和领域,诸如:信号处理、自动化控制、机器人学、电力系统等。图像处理也吸引了众多对基于计算智能的技术应用感兴趣的研究者,是一个很受关注的研究问题及现实问题。最初,大部分的研究工作,主要集中在发展常规模糊系统、 | Amitava Chatterjee 张进兴 | 2014 | 国外科技新书评介2014，，3： | 0 |
| 16 | 启发式信号处理及其应用进展显示文摘复杂的、顶尖的信号处理算法的研究和应用在过去的40多年中一直保持活跃,特别是通信、控制理论、评估、模式识别、电器电子系统、机械系统设计等领域。一维信号处理与多维信号处理,即图像和视频处理,近年来受到了惊人的关注,研究的焦点从最初发展的传统算法,逐渐演变成采用基于启发式的方法解决信号处理问题。 | Amitava Chatterjee 张进兴 | 2014 | 国外科技新书评介2014，0，6： | 0 |
| 17 | Variation in soil organic matter accumulation and metabolic activity along an elevation gradient in the Santa Rosa Mountains of Southern California, USA显示文摘Variations in soil organic matter accumulation across an elevation can be used to explain the control of substrate supply and variability on soil metabolic activity. We investigated geographic changes in soil organic matter and metabolic rates along an elevation gradient(289–2,489 m) in the Santa Rosa Mountains, California, USA from subalpine and montane pine forests through chaparral to desert. From base(289 m) to summit(2,489 m), 24 sites were established for collecting soil samples under canopies and inter-canopy spaces, at 0–5 and 5–15 cm soil depths increments. Soil organic matter(SOM) content was determined using weight loss on ignition at 550°C and soil CO2 efflux(R) was measured at day 5(R5) and day 20(R20) of incubation. Changes in SOM content along the elevation gradient showed a significant relationship(P<0.05) but R5 and R20 were not related to either elevation or SOM content. However, the ratio of R and SOM(R5/SOM) showed a strong relationship across the mountains at both soil depths. R5/SOM, as an indicator of carbon use efficiency, may be applicable to other semi-arid transects at larger scale modeling of soil metabolic processes. | Amitava CHATTERJEE George D JENERETTE | 2015 | Journal of Arid Land2015，7，6： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员