_____________________________________________________________________________________________________ *Corresponding author: E-mail: squires200@yahoo.com.au; Journal of Scientific Research & Reports 27(5): 111-124, 2021; Article no.JSRR.70050 ISSN: 2320-0227 Investigation of Ecosystem Goods and Services Flows from Land: A Commentary on Experience from Watersheds in Iran Ali Ariapour 1 and Victor R. Squires 2* 1 Department of Range Management, Borujerd Branch, Islamic Azad University, Borujerd, Iran. 2 Formerly, University of Adelaide, Australia. Authors’ contributions This work was carried out in collaboration between both authors. Authors AA and VRS Conceptualized the article. Methodology written by author AA; validation by author AA and VS; investigation, resources by author AA; Data curation by author AA. Author VRS writing the original draft preparation and review and editing. Project supervised and administration by author AA. Both authors read and approved the final manuscript. Article Information DOI: 10.9734/JSRR/2021/v27i530396 Editor(s): (1) Dr. Grigorios L. Kyriakopoulos, National Technical University of Athens (NTUA), Greece. Reviewers: (1) Rambabu Tenneti, SRKR Engineering College, India. (2) Jingjing Liu, Wuhan University, China. Complete Peer review History: http://www.sdiarticle4.com/review-history/70050 Received 27 April 2021 Accepted 01 July 2021 Published 06 July 2021 ABSTRACT This paper is about the experience gained in field studies in four provinces in semi-arid Iran. We focus on assessing the flow of ecological goods and services (EG&S) in uplands that are the watersheds. The paper is in three parts. Firstly, we describe the geography, demography and climate to provide a setting for the work but we also seek to provide an explanation of the context for the case studies that form the bulk of this paper. In the second part we elaborate on the nature of the EG&S and discuss inter alia the use of indicators by which we gauge the flow rates of EG&S from the land and also briefly discuss the implications for introducing payments for ecosystem services (PES). Mention is made of the internationally-funded MENARID (Middle East and North Africa Regional Program for Integrated Development) with a focus on the Sustainable Watershed sub-project. Lessons can be drawn from this internationally sponsored program. The key constraints to identifying, evaluating and ascertaining the rate of flow of EG&S, especially spatial and temporal, are elaborated. Finally, we present data (both quantitative and qualitative) derived Review Article