{"title":"气候对农林业系统的影响:伊朗半干旱、半湿润和湿润地区物种多样性和稳定性的比较分析","authors":"Sajad Ghanbari, Samira Sasanifar","doi":"10.1007/s10457-024-01130-3","DOIUrl":null,"url":null,"abstract":"<div><p>This study investigates the diversity and stability of agroforestry systems (AGSs) across three distinct ecological regions in Iran: the semi-arid Arasbaran, the semi-humid Zagros, and the humid Hyrcanian regions. The research aims to understand how climate impacts species richness and diversity within these systems. Data was collected from 129 farms, where species identification and various quantitative metrics, such as tree diameter and height, were measured. Biodiversity indices including Taxa_S, Shannon_H, and Equitability_J were calculated, and the species distribution was analyzed using parametric models. The results indicate significant differences in species richness and diversity across the three regions. The humid region exhibited the highest diversity, with 22 species from 10 families, whereas the semi-arid region showed the lowest diversity. The Shannon and Taxa_S indices were also significantly higher in the humid region compared to the other two regions, suggesting that the humid climate supports a wider range of species. Conversely, the semi-arid region had the highest average tree volume, possibly due to the dominance of certain species better adapted to the harsh climate. The study also found that the semi-arid and semi-humid regions corresponded to geometric and broken stick models, respectively, indicating different levels of community stability. The findings suggest that AGSs in semi-humid regions are more stable than those in semi-arid regions, likely due to more favorable climatic conditions. This research highlights the importance of considering regional climatic factors in the development and management of AGSs to optimize biodiversity conservation and agricultural productivity.</p></div>","PeriodicalId":7610,"journal":{"name":"Agroforestry Systems","volume":"99 1","pages":""},"PeriodicalIF":2.0000,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Climatic influence on agroforestry systems: comparative analysis of species diversity and stability across semi-arid, semi-humid, and humid regions in Iran\",\"authors\":\"Sajad Ghanbari, Samira Sasanifar\",\"doi\":\"10.1007/s10457-024-01130-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>This study investigates the diversity and stability of agroforestry systems (AGSs) across three distinct ecological regions in Iran: the semi-arid Arasbaran, the semi-humid Zagros, and the humid Hyrcanian regions. The research aims to understand how climate impacts species richness and diversity within these systems. Data was collected from 129 farms, where species identification and various quantitative metrics, such as tree diameter and height, were measured. Biodiversity indices including Taxa_S, Shannon_H, and Equitability_J were calculated, and the species distribution was analyzed using parametric models. The results indicate significant differences in species richness and diversity across the three regions. The humid region exhibited the highest diversity, with 22 species from 10 families, whereas the semi-arid region showed the lowest diversity. The Shannon and Taxa_S indices were also significantly higher in the humid region compared to the other two regions, suggesting that the humid climate supports a wider range of species. Conversely, the semi-arid region had the highest average tree volume, possibly due to the dominance of certain species better adapted to the harsh climate. The study also found that the semi-arid and semi-humid regions corresponded to geometric and broken stick models, respectively, indicating different levels of community stability. The findings suggest that AGSs in semi-humid regions are more stable than those in semi-arid regions, likely due to more favorable climatic conditions. This research highlights the importance of considering regional climatic factors in the development and management of AGSs to optimize biodiversity conservation and agricultural productivity.</p></div>\",\"PeriodicalId\":7610,\"journal\":{\"name\":\"Agroforestry Systems\",\"volume\":\"99 1\",\"pages\":\"\"},\"PeriodicalIF\":2.0000,\"publicationDate\":\"2024-12-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Agroforestry Systems\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10457-024-01130-3\",\"RegionNum\":3,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"AGRONOMY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Agroforestry Systems","FirstCategoryId":"97","ListUrlMain":"https://link.springer.com/article/10.1007/s10457-024-01130-3","RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"AGRONOMY","Score":null,"Total":0}
Climatic influence on agroforestry systems: comparative analysis of species diversity and stability across semi-arid, semi-humid, and humid regions in Iran
This study investigates the diversity and stability of agroforestry systems (AGSs) across three distinct ecological regions in Iran: the semi-arid Arasbaran, the semi-humid Zagros, and the humid Hyrcanian regions. The research aims to understand how climate impacts species richness and diversity within these systems. Data was collected from 129 farms, where species identification and various quantitative metrics, such as tree diameter and height, were measured. Biodiversity indices including Taxa_S, Shannon_H, and Equitability_J were calculated, and the species distribution was analyzed using parametric models. The results indicate significant differences in species richness and diversity across the three regions. The humid region exhibited the highest diversity, with 22 species from 10 families, whereas the semi-arid region showed the lowest diversity. The Shannon and Taxa_S indices were also significantly higher in the humid region compared to the other two regions, suggesting that the humid climate supports a wider range of species. Conversely, the semi-arid region had the highest average tree volume, possibly due to the dominance of certain species better adapted to the harsh climate. The study also found that the semi-arid and semi-humid regions corresponded to geometric and broken stick models, respectively, indicating different levels of community stability. The findings suggest that AGSs in semi-humid regions are more stable than those in semi-arid regions, likely due to more favorable climatic conditions. This research highlights the importance of considering regional climatic factors in the development and management of AGSs to optimize biodiversity conservation and agricultural productivity.
期刊介绍:
Agroforestry Systems is an international scientific journal that publishes results of novel, high impact original research, critical reviews and short communications on any aspect of agroforestry. The journal particularly encourages contributions that demonstrate the role of agroforestry in providing commodity as well non-commodity benefits such as ecosystem services. Papers dealing with both biophysical and socioeconomic aspects are welcome. These include results of investigations of a fundamental or applied nature dealing with integrated systems involving trees and crops and/or livestock. Manuscripts that are purely descriptive in nature or confirmatory in nature of well-established findings, and with limited international scope are discouraged. To be acceptable for publication, the information presented must be relevant to a context wider than the specific location where the study was undertaken, and provide new insight or make a significant contribution to the agroforestry knowledge base