International Journal of Environmental Studies

For more than 45 years, the International Journal of Environmental Studies has been pre-eminent in its field. The environment is understood to comprise the natural and the man-made, and their interactions; including such matters as pollution, health effects, analytical methods, political approaches, social impacts etc. Papers favouring an interdisciplinary approach are preferred, because the evidence of more than 45 years appears to be that many intellectual tools and many causes and effects are at issue in any environmental problem - and its solution. This does not mean that a single focus or a narrow view is unwelcome; provided always that the evidence is indicated and the method is robust. Pragmatic decision-making and applicable policies are subjects of interest, together with the problems in establishing facts about dynamic systems where long periods of observation and precise measurement may be difficult to secure. In other words, a systems or holistic approach to the environment and a scientific analysis are complementary, and the distinction between ’hard’ and ’soft’ science is bridged in most of the papers published. These may be on any item in the agenda of environmental science: land, water, food, conservation, population, risk analysis, energy, economics of ecological and non-ecological approaches, social advocacy of arguments for change, legal measures, implications of urbanism, energy choices, waste disposal, recycling, transport systems and other issues of mass society. There is concern also for marginal areas, under-developed societies, minorities, species loss; and indeed no element of the subject of environmental studies, seen in an international and interactive mode, is excluded.

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Quartiles

The set of journals have been ranked according to their SJR and divided into four equal groups, four quartiles. Q1 (green) comprises the quarter of the journals with the highest values, Q2 (yellow) the second highest values, Q3 (orange) the third highest values and Q4 (red) the lowest values.

Category	Year	Quartile
Computers in Earth Sciences	1999	Q3
Computers in Earth Sciences	2000	Q4
Computers in Earth Sciences	2001	Q4
Computers in Earth Sciences	2002	Q3
Computers in Earth Sciences	2003	Q4
Computers in Earth Sciences	2004	Q4
Computers in Earth Sciences	2005	Q4
Computers in Earth Sciences	2006	Q4
Computers in Earth Sciences	2007	Q3
Computers in Earth Sciences	2008	Q3
Computers in Earth Sciences	2009	Q3
Computers in Earth Sciences	2010	Q3
Computers in Earth Sciences	2011	Q3
Computers in Earth Sciences	2012	Q3
Computers in Earth Sciences	2013	Q3
Computers in Earth Sciences	2014	Q4
Computers in Earth Sciences	2015	Q3
Computers in Earth Sciences	2016	Q4
Computers in Earth Sciences	2017	Q4
Computers in Earth Sciences	2018	Q4
Computers in Earth Sciences	2019	Q4
Computers in Earth Sciences	2020	Q3
Computers in Earth Sciences	2021	Q3
Computers in Earth Sciences	2022	Q2
Computers in Earth Sciences	2023	Q3
Ecology	1999	Q4
Ecology	2000	Q4
Ecology	2001	Q4
Ecology	2002	Q4
Ecology	2003	Q4
Ecology	2004	Q4
Ecology	2005	Q4
Ecology	2006	Q4
Ecology	2007	Q3
Ecology	2008	Q3
Ecology	2009	Q3
Ecology	2010	Q3
Ecology	2011	Q3
Ecology	2012	Q3
Ecology	2013	Q3
Ecology	2014	Q3
Ecology	2015	Q3
Ecology	2016	Q4
Ecology	2017	Q3
Ecology	2018	Q3
Ecology	2019	Q3
Ecology	2020	Q3
Ecology	2021	Q3
Ecology	2022	Q2
Ecology	2023	Q3
Geography, Planning and Development	1999	Q2
Geography, Planning and Development	2000	Q3
Geography, Planning and Development	2001	Q3
Geography, Planning and Development	2002	Q3
Geography, Planning and Development	2003	Q3
Geography, Planning and Development	2004	Q3
Geography, Planning and Development	2005	Q3
Geography, Planning and Development	2006	Q3
Geography, Planning and Development	2007	Q2
Geography, Planning and Development	2008	Q2
Geography, Planning and Development	2009	Q2
Geography, Planning and Development	2010	Q3
Geography, Planning and Development	2011	Q2
Geography, Planning and Development	2012	Q3
Geography, Planning and Development	2013	Q3
Geography, Planning and Development	2014	Q3
Geography, Planning and Development	2015	Q2
Geography, Planning and Development	2016	Q3
Geography, Planning and Development	2017	Q3
Geography, Planning and Development	2018	Q3
Geography, Planning and Development	2019	Q3
Geography, Planning and Development	2020	Q3
Geography, Planning and Development	2021	Q3
Geography, Planning and Development	2022	Q2
Geography, Planning and Development	2023	Q3
Pollution	1999	Q3
Pollution	2000	Q4
Pollution	2001	Q4
Pollution	2002	Q4
Pollution	2003	Q4
Pollution	2004	Q4
Pollution	2005	Q3
Pollution	2006	Q3
Pollution	2007	Q3
Pollution	2008	Q3
Pollution	2009	Q3
Pollution	2010	Q3
Pollution	2011	Q3
Pollution	2012	Q3
Pollution	2013	Q3
Pollution	2014	Q3
Pollution	2015	Q3
Pollution	2016	Q3
Pollution	2017	Q3
Pollution	2018	Q3
Pollution	2019	Q3
Pollution	2020	Q3
Pollution	2021	Q3
Pollution	2022	Q3
Pollution	2023	Q3
Waste Management and Disposal	1999	Q3
Waste Management and Disposal	2000	Q4
Waste Management and Disposal	2001	Q4
Waste Management and Disposal	2002	Q3
Waste Management and Disposal	2003	Q3
Waste Management and Disposal	2004	Q3
Waste Management and Disposal	2005	Q3
Waste Management and Disposal	2006	Q3
Waste Management and Disposal	2007	Q3
Waste Management and Disposal	2008	Q2
Waste Management and Disposal	2009	Q2
Waste Management and Disposal	2010	Q3
Waste Management and Disposal	2011	Q3
Waste Management and Disposal	2012	Q3
Waste Management and Disposal	2013	Q3
Waste Management and Disposal	2014	Q3
Waste Management and Disposal	2015	Q2
Waste Management and Disposal	2016	Q3
Waste Management and Disposal	2017	Q3
Waste Management and Disposal	2018	Q3
Waste Management and Disposal	2019	Q3
Waste Management and Disposal	2020	Q3
Waste Management and Disposal	2021	Q3
Waste Management and Disposal	2022	Q3
Waste Management and Disposal	2023	Q3

SJR

The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.

Year	SJR
1999	0.168
2000	0.136
2001	0.116
2002	0.168
2003	0.147
2004	0.139
2005	0.174
2006	0.160
2007	0.228
2008	0.279
2009	0.280
2010	0.229
2011	0.257
2012	0.206
2013	0.232
2014	0.231
2015	0.348
2016	0.190
2017	0.239
2018	0.227
2019	0.242
2020	0.281
2021	0.275
2022	0.366
2023	0.289

Total Documents

Evolution of the number of published documents. All types of documents are considered, including citable and non citable documents.

Year	Documents
1999	54
2000	49
2001	45
2002	47
2003	63
2004	69
2005	68
2006	66
2007	63
2008	55
2009	62
2010	65
2011	64
2012	67
2013	78
2014	74
2015	78
2016	78
2017	82
2018	72
2019	65
2020	76
2021	64
2022	88
2023	191

Citations per document

This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.

Cites per document	Year	Value
Cites / Doc. (4 years)	1999	0.117
Cites / Doc. (4 years)	2000	0.151
Cites / Doc. (4 years)	2001	0.083
Cites / Doc. (4 years)	2002	0.106
Cites / Doc. (4 years)	2003	0.092
Cites / Doc. (4 years)	2004	0.147
Cites / Doc. (4 years)	2005	0.188
Cites / Doc. (4 years)	2006	0.263
Cites / Doc. (4 years)	2007	0.380
Cites / Doc. (4 years)	2008	0.526
Cites / Doc. (4 years)	2009	0.520
Cites / Doc. (4 years)	2010	0.581
Cites / Doc. (4 years)	2011	0.686
Cites / Doc. (4 years)	2012	0.545
Cites / Doc. (4 years)	2013	0.589
Cites / Doc. (4 years)	2014	0.482
Cites / Doc. (4 years)	2015	0.774
Cites / Doc. (4 years)	2016	0.690
Cites / Doc. (4 years)	2017	0.740
Cites / Doc. (4 years)	2018	0.772
Cites / Doc. (4 years)	2019	0.839
Cites / Doc. (4 years)	2020	1.168
Cites / Doc. (4 years)	2021	1.403
Cites / Doc. (4 years)	2022	1.978
Cites / Doc. (4 years)	2023	1.744
Cites / Doc. (3 years)	1999	0.117
Cites / Doc. (3 years)	2000	0.083
Cites / Doc. (3 years)	2001	0.065
Cites / Doc. (3 years)	2002	0.122
Cites / Doc. (3 years)	2003	0.078
Cites / Doc. (3 years)	2004	0.135
Cites / Doc. (3 years)	2005	0.162
Cites / Doc. (3 years)	2006	0.255
Cites / Doc. (3 years)	2007	0.384
Cites / Doc. (3 years)	2008	0.533
Cites / Doc. (3 years)	2009	0.603
Cites / Doc. (3 years)	2010	0.594
Cites / Doc. (3 years)	2011	0.615
Cites / Doc. (3 years)	2012	0.471
Cites / Doc. (3 years)	2013	0.566
Cites / Doc. (3 years)	2014	0.469
Cites / Doc. (3 years)	2015	0.749
Cites / Doc. (3 years)	2016	0.652
Cites / Doc. (3 years)	2017	0.670
Cites / Doc. (3 years)	2018	0.798
Cites / Doc. (3 years)	2019	0.845
Cites / Doc. (3 years)	2020	1.105
Cites / Doc. (3 years)	2021	1.423
Cites / Doc. (3 years)	2022	2.068
Cites / Doc. (3 years)	2023	1.719
Cites / Doc. (2 years)	1999	0.089
Cites / Doc. (2 years)	2000	0.067
Cites / Doc. (2 years)	2001	0.068
Cites / Doc. (2 years)	2002	0.138
Cites / Doc. (2 years)	2003	0.065
Cites / Doc. (2 years)	2004	0.164
Cites / Doc. (2 years)	2005	0.182
Cites / Doc. (2 years)	2006	0.292
Cites / Doc. (2 years)	2007	0.440
Cites / Doc. (2 years)	2008	0.566
Cites / Doc. (2 years)	2009	0.585
Cites / Doc. (2 years)	2010	0.487
Cites / Doc. (2 years)	2011	0.496
Cites / Doc. (2 years)	2012	0.403
Cites / Doc. (2 years)	2013	0.427
Cites / Doc. (2 years)	2014	0.490
Cites / Doc. (2 years)	2015	0.770
Cites / Doc. (2 years)	2016	0.651
Cites / Doc. (2 years)	2017	0.673
Cites / Doc. (2 years)	2018	0.788
Cites / Doc. (2 years)	2019	0.792
Cites / Doc. (2 years)	2020	1.175
Cites / Doc. (2 years)	2021	1.340
Cites / Doc. (2 years)	2022	2.207
Cites / Doc. (2 years)	2023	1.684

Total Cites

Self-Cites

Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.

Cites	Year	Value
Self Cites	1999	1
Self Cites	2000	2
Self Cites	2001	1
Self Cites	2002	2
Self Cites	2003	3
Self Cites	2004	2
Self Cites	2005	6
Self Cites	2006	3
Self Cites	2007	9
Self Cites	2008	16
Self Cites	2009	26
Self Cites	2010	5
Self Cites	2011	16
Self Cites	2012	13
Self Cites	2013	15
Self Cites	2014	14
Self Cites	2015	36
Self Cites	2016	12
Self Cites	2017	20
Self Cites	2018	14
Self Cites	2019	18
Self Cites	2020	19
Self Cites	2021	11
Self Cites	2022	12
Self Cites	2023	26
Total Cites	1999	17
Total Cites	2000	12
Total Cites	2001	10
Total Cites	2002	18
Total Cites	2003	11
Total Cites	2004	21
Total Cites	2005	29
Total Cites	2006	51
Total Cites	2007	78
Total Cites	2008	105
Total Cites	2009	111
Total Cites	2010	107
Total Cites	2011	112
Total Cites	2012	90
Total Cites	2013	111
Total Cites	2014	98
Total Cites	2015	164
Total Cites	2016	150
Total Cites	2017	154
Total Cites	2018	190
Total Cites	2019	196
Total Cites	2020	242
Total Cites	2021	303
Total Cites	2022	424
Total Cites	2023	392

External Cites per Doc

Cites per Doc

Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.

Cites	Year	Value
External Cites per document	1999	0.110
External Cites per document	2000	0.069
External Cites per document	2001	0.059
External Cites per document	2002	0.108
External Cites per document	2003	0.057
External Cites per document	2004	0.123
External Cites per document	2005	0.128
External Cites per document	2006	0.240
External Cites per document	2007	0.340
External Cites per document	2008	0.452
External Cites per document	2009	0.462
External Cites per document	2010	0.567
External Cites per document	2011	0.527
External Cites per document	2012	0.403
External Cites per document	2013	0.490
External Cites per document	2014	0.402
External Cites per document	2015	0.584
External Cites per document	2016	0.600
External Cites per document	2017	0.583
External Cites per document	2018	0.739
External Cites per document	2019	0.767
External Cites per document	2020	1.018
External Cites per document	2021	1.371
External Cites per document	2022	2.010
External Cites per document	2023	1.605
Cites per document	1999	0.117
Cites per document	2000	0.083
Cites per document	2001	0.065
Cites per document	2002	0.122
Cites per document	2003	0.078
Cites per document	2004	0.135
Cites per document	2005	0.162
Cites per document	2006	0.255
Cites per document	2007	0.384
Cites per document	2008	0.533
Cites per document	2009	0.603
Cites per document	2010	0.594
Cites per document	2011	0.615
Cites per document	2012	0.471
Cites per document	2013	0.566
Cites per document	2014	0.469
Cites per document	2015	0.749
Cites per document	2016	0.652
Cites per document	2017	0.670
Cites per document	2018	0.798
Cites per document	2019	0.845
Cites per document	2020	1.105
Cites per document	2021	1.423
Cites per document	2022	2.068
Cites per document	2023	1.719

% International Collaboration

International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.

Year	International Collaboration
1999	9.26
2000	10.20
2001	0.00
2002	4.26
2003	14.29
2004	14.49
2005	8.82
2006	9.09
2007	7.94
2008	16.36
2009	24.19
2010	13.85
2011	17.19
2012	11.94
2013	28.21
2014	14.86
2015	23.08
2016	11.54
2017	12.20
2018	18.06
2019	20.00
2020	19.74
2021	14.06
2022	18.18
2023	26.18

Citable documents

Non-citable documents

Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.

Documents	Year	Value
Non-citable documents	1999	4
Non-citable documents	2000	9
Non-citable documents	2001	9
Non-citable documents	2002	10
Non-citable documents	2003	8
Non-citable documents	2004	15
Non-citable documents	2005	17
Non-citable documents	2006	20
Non-citable documents	2007	14
Non-citable documents	2008	18
Non-citable documents	2009	16
Non-citable documents	2010	16
Non-citable documents	2011	11
Non-citable documents	2012	9
Non-citable documents	2013	11
Non-citable documents	2014	14
Non-citable documents	2015	16
Non-citable documents	2016	16
Non-citable documents	2017	15
Non-citable documents	2018	16
Non-citable documents	2019	13
Non-citable documents	2020	9
Non-citable documents	2021	6
Non-citable documents	2022	4
Non-citable documents	2023	3
Citable documents	1999	141
Citable documents	2000	135
Citable documents	2001	144
Citable documents	2002	138
Citable documents	2003	133
Citable documents	2004	140
Citable documents	2005	162
Citable documents	2006	180
Citable documents	2007	189
Citable documents	2008	179
Citable documents	2009	168
Citable documents	2010	164
Citable documents	2011	171
Citable documents	2012	182
Citable documents	2013	185
Citable documents	2014	195
Citable documents	2015	203
Citable documents	2016	214
Citable documents	2017	215
Citable documents	2018	222
Citable documents	2019	219
Citable documents	2020	210
Citable documents	2021	207
Citable documents	2022	201
Citable documents	2023	225

Cited documents

Uncited documents

Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.

Documents	Year	Value
Uncited documents	1999	132
Uncited documents	2000	133
Uncited documents	2001	145
Uncited documents	2002	132
Uncited documents	2003	131
Uncited documents	2004	137
Uncited documents	2005	156
Uncited documents	2006	160
Uncited documents	2007	153
Uncited documents	2008	131
Uncited documents	2009	110
Uncited documents	2010	119
Uncited documents	2011	115
Uncited documents	2012	126
Uncited documents	2013	127
Uncited documents	2014	148
Uncited documents	2015	131
Uncited documents	2016	142
Uncited documents	2017	144
Uncited documents	2018	135
Uncited documents	2019	134
Uncited documents	2020	102
Uncited documents	2021	93
Uncited documents	2022	90
Uncited documents	2023	98
Cited documents	1999	13
Cited documents	2000	11
Cited documents	2001	8
Cited documents	2002	16
Cited documents	2003	10
Cited documents	2004	18
Cited documents	2005	23
Cited documents	2006	40
Cited documents	2007	50
Cited documents	2008	66
Cited documents	2009	74
Cited documents	2010	61
Cited documents	2011	67
Cited documents	2012	65
Cited documents	2013	69
Cited documents	2014	61
Cited documents	2015	88
Cited documents	2016	88
Cited documents	2017	86
Cited documents	2018	103
Cited documents	2019	98
Cited documents	2020	117
Cited documents	2021	120
Cited documents	2022	115
Cited documents	2023	130