Data Sources and Bibliometric Collection
The 5th edition of the Research.com Best Environmental Sciences Scientists in Indonesia Ranking is grounded on a solid foundation of bibliometric data primarily sourced from OpenAlex and CrossRef, supplemented by multiple other reputable data repositories. These comprehensive databases are widely recognized within the research community for their extensive coverage and reliability. Bibliometric data used to devise the citation-based metrics for this ranking were systematically collected on January 12, 2026. A scientist's placement in the ranking is determined based on their D-index (Discipline H-index), an adapted metric that reflects only the papers and citation metrics strictly within the discipline under examination—in this case, Environmental Sciences.
Scope of Research and Criteria for Ranking Inclusion
The ranking assessed a total of 279,971 scientist profiles identified from diverse bibliometric data sources spanning all scientific disciplines. Within this expansive dataset, 252 scientists specializing in Environmental Sciences were specifically examined. To qualify for inclusion in the Environmental Sciences ranking, a scientist was required to have a D-index of at least 30, alongside a majority of their tier publications concentrated within the Environmental Sciences domain. Furthermore, additional qualitative factors, including notable awards and achievements within the field, were taken into consideration.
The threshold D-index for recognizing top researchers is set in increments of 10, adjusted according to the total number of scholars estimated in each discipline, thereby ensuring the inclusion of the top 1% of leading experts. It was also ensured that the proximity between a scientist’s general H-index and their D-index did not exceed 30%, maintaining alignment between their overall impact and discipline-specific contributions.
Verification Practices
Recognizing that raw bibliometric data alone cannot serve as an absolute measure of scholarly output, the Research.com team employed rigorous manual verification processes. Each scientist’s profile was cross-examined against a broad spectrum of credible publication sources to confirm accuracy and validity. Although the count of papers published in prominent journals and conference proceedings does not directly influence a researcher’s ranking position, it provides a valuable secondary indicator of an individual’s impact in Environmental Sciences.
The position of each scientist in this ranking is ultimately established using their D-index as calculated from data primarily extracted from OpenAlex and CrossRef—two of the most prominent and trusted bibliometric databases available to the global research community. For a more detailed overview of the methodology employed in creating this ranking, please visit our methodology page.
Research.com’s Mission and Agenda
The creation of this ranking aligns with Research.com’s broader mission to inspire researchers, corporations, and policy makers worldwide to observe and understand the trajectories of leading experts. By providing a transparent and meticulously curated platform, Research.com facilitates recognition and awareness of top-tier scientists within particular disciplines, countries, and research institutions. Ultimately, this initiative aims to foster informed collaboration and strategic decision-making across the global scientific community.
