Chemosphere - Global Change Science最新文献_第5页

Effect of green manure amendment and flooding on methane emission from paddy fields 绿肥改良和水淹对稻田甲烷排放的影响

Chemosphere - Global Change Science Pub Date : 2001-01-01 DOI: 10.1016/S1465-9972(00)00032-5

Shang‐Shyng Yang, Hsiu-Lan Chang

引用次数: 27

Multiphase measurement of atmospheric ammonia 大气氨的多相测量

Chemosphere - Global Change Science Pub Date : 2001-01-01 DOI: 10.1016/S1465-9972(00)00029-5

Shivaram Prasad Singh, G. S. Satsangi, P. Khare, A. Lakhani, K. M. Kumari, S. S. Srivastava

引用次数: 44

Influence of flooded and non-flooded conditions on methane efflux from two soils planted to rice 水淹和非水淹条件对两种水稻土壤甲烷外排的影响

Chemosphere - Global Change Science Pub Date : 2001-01-01 DOI: 10.1016/S1465-9972(00)00034-9

K. Bharati, S. Mohanty, V. Rao, T. Adhya

引用次数: 29

Composition of aerosols and cloud water at a remote mountain site (2.8 kms) in Pakistan 巴基斯坦偏远山区(2.8公里)气溶胶和云水的组成

Chemosphere - Global Change Science Pub Date : 2001-01-01 DOI: 10.1016/S1465-9972(00)00038-6

B. Ghauri, M. Mirza, R. C. Richter, V. Dutkiewicz, A. Rusheed, Adil R. Khan, L. Husain

引用次数: 33

Vertical distribution of oxides of nitrogen in the semi-urban planetary boundary layer: mixing ratios, sources and transport 半城市行星边界层中氮氧化物的垂直分布:混合比、来源和输送

Chemosphere - Global Change Science Pub Date : 2001-01-01 DOI: 10.1016/S1465-9972(00)00028-3

T. C. Moore, L. J. Sullivan, P. A. Roelle, V. Aneja

引用次数: 3

Influence of flooded and non-flooded conditions on methane efflux from two soils planted to rice 水淹和非水淹条件对两种水稻土壤甲烷外排的影响

Chemosphere - Global Change Science Pub Date : 2001-01-01 DOI: 10.1016/S1465-9972(00)00034-9

K Bharati, S.R Mohanty, V.R Rao, T.K Adhya

{"title":"Influence of flooded and non-flooded conditions on methane efflux from two soils planted to rice","authors":"K Bharati, S.R Mohanty, V.R Rao, T.K Adhya","doi":"10.1016/S1465-9972(00)00034-9","DOIUrl":"https://doi.org/10.1016/S1465-9972(00)00034-9","url":null,"abstract":"<div>In a greenhouse study, CH4 flux from alluvial and laterite soils planted to rice (cv. CR 749-20-2) was monitored under non-flooded and flooded conditions. CH4 flux from continuously non-flooded pots was always lower than from pots maintained under flooded conditions. The cumulative CH4 flux was 150 and 880 mg pot−1 in laterite and 105 and 405 mg pot−1 in alluvial soils under non-flooded and flooded conditions, respectively. While non-flooded conditions exhibited a single CH4 peak at vegetative stage, flooded conditions showed additional peak at reproductive stage. CH4 flux maxima was more intense under flooded conditions and persisted for a longer period during the reproductive stage than at the vegetative stage. Soil contents of Fe2+, readily mineralizable carbon (RMC) and ninhydrin reactive nitrogen (NRN) exhibited significant positive relationship with CH4 flux. Among the plant characters, a significant negative relationship existed between CH4 flux and α-naphthylamine oxidase activity of the root base under flooded condition and root tip under non-flooded conditions.</div>","PeriodicalId":100235,"journal":{"name":"Chemosphere - Global Change Science","volume":"3 1","pages":"Pages 25-32"},"PeriodicalIF":0.0,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1465-9972(00)00034-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91760504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 29

Emissions of CH3Br, organochlorines, and organoiodines from temperate macroalgae 温带大型藻类释放的CH3Br、有机氯和有机碘

Chemosphere - Global Change Science Pub Date : 2001-01-01 DOI: 10.1016/S1465-9972(00)00021-0

J.M. Baker , W.T. Sturges , J. Sugier , G. Sunnenberg , A.A. Lovett , C.E. Reeves , P.D. Nightingale , S.A. Penkett

{"title":"Emissions of CH3Br, organochlorines, and organoiodines from temperate macroalgae","authors":"J.M. Baker , W.T. Sturges , J. Sugier , G. Sunnenberg , A.A. Lovett , C.E. Reeves , P.D. Nightingale , S.A. Penkett","doi":"10.1016/S1465-9972(00)00021-0","DOIUrl":"https://doi.org/10.1016/S1465-9972(00)00021-0","url":null,"abstract":"<div>The production rates of a range of low molecular weight halogenated organics have been determined in cultures of five temperate species of macroalgae collected from the north coast of Norfolk, England. Compounds studied included CH3Br, the chlorinated organics CH3Cl, CH2Cl2 and CHCl3, and the iodinated organics CH3I, C2H5I, and CH2ClI. Measurements of a wider range of halocarbon concentrations in an isolated rockpool and in air over the seaweed bed were also conducted to evaluate the local impact of the seaweeds on halocarbon concentrations in the natural environment. Estimates for the global emissions of some of the key halogenated compounds from macroalgae have been derived. In general macrophytes appear not to be globally significant producers of the particular halocarbons studied. In coastal regions, however, the impact on local atmospheric composition and chemistry could be greater.</div>","PeriodicalId":100235,"journal":{"name":"Chemosphere - Global Change Science","volume":"3 1","pages":"Pages 93-106"},"PeriodicalIF":0.0,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1465-9972(00)00021-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91760501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 52

An estimate of natural volatile organic compound emissions from vegetation since the last glacial maximum 自末次冰期极大期以来植被自然挥发性有机化合物排放的估计

Chemosphere - Global Change Science Pub Date : 2001-01-01 DOI: 10.1016/S1465-9972(00)00023-4

Jonathan M Adams, J. Constable, A. Guenther, P. Zimmerman

引用次数: 49

The influence of moisture content on polycyclic aromatic hydrocarbons emission during rice straw burning 稻秆燃烧过程中水分含量对多环芳烃排放的影响

Chemosphere - Global Change Science Pub Date : 2001-01-01 DOI: 10.1016/S1465-9972(00)00045-3

Takashi Korenaga , Xiaoxing Liu , Zuyun Huang

引用次数: 73

Multiphase measurement of atmospheric ammonia 大气氨的多相测量

Chemosphere - Global Change Science Pub Date : 2001-01-01 DOI: 10.1016/S1465-9972(00)00029-5

S.P Singh, G.S Satsangi, P Khare, A Lakhani, K Maharaj Kumari, S.S Srivastava

{"title":"Multiphase measurement of atmospheric ammonia","authors":"S.P Singh, G.S Satsangi, P Khare, A Lakhani, K Maharaj Kumari, S.S Srivastava","doi":"10.1016/S1465-9972(00)00029-5","DOIUrl":"https://doi.org/10.1016/S1465-9972(00)00029-5","url":null,"abstract":"<div>Measurement of ammonia in vapour phase, particulate and rain was made at a suburban site of India. Vapour phase concentrations varied between 0.97 and 25.5 μg m−3 (57.1–1500.0 nmol m−3) and diurnal variation study showed high concentration of NH3 during night time and minimum at 0600 h (early morning). Particulate phase NH4 values ranged between 1.2 and 5.3 μg m−3 (66.7–294.4 nmol m−3). Dry deposition flux was determined from model calculations. Day time NH3 flux was found to be 8.4±4.0 mg m−2 d−1 and that of night 2.2±1.2 mg m−2 d−1. With respect to particulate deposition flux was found 0.2±0.1 mg m−2 d−1 while in precipitation values of NH4 ranged between 0.7 and 74.4 μeq l−1. Regression analysis of ammonium concentration with rain volume and deposition indicates that NH3 concentration is being controlled by both gas and particulate ammonium. Annual inputs for wet and dry deposition were found to be 0.34±0.3 and 3.9±1.9 g m−2 y−1.</div>","PeriodicalId":100235,"journal":{"name":"Chemosphere - Global Change Science","volume":"3 1","pages":"Pages 107-116"},"PeriodicalIF":0.0,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1465-9972(00)00029-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91760503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 42