{"title":"地下水抽取与林地死亡:纳米比亚的经验教训","authors":"Elbe Brunette , Lixin Wang , Theo D. Wassenaar","doi":"10.1016/j.jaridenv.2024.105154","DOIUrl":null,"url":null,"abstract":"<div><p>In response to escalating worldwide groundwater dependence amid climate change, accurate estimation of sustainable groundwater yield becomes crucial. This study investigated the impact of groundwater abstraction on tree mortality in Namibia. We compared tree mortality around production boreholes with monitoring boreholes and we correlated groundwater decline rates with tree mortality, establishing a model from which we derived a groundwater decline rate range limit. Ana tree mortality was significantly higher (<em>P</em> = 0.01) around production boreholes (13.3%) than around monitoring boreholes (0%). In the dammed Swakop River, Ana tree mortality correlated with decline rates (r<sub>S</sub> = 0.64, P < 0.01). The study suggests that decline rates of above 0.2–0.23 cm day<sup>−1</sup> may cause elevated mortality (3–7%) and should not be sustained for extended periods. Rates exceeding 0.5 cm day<sup>−1</sup> should be avoided, while monitoring is recommended for rates between 0.23 and 0.5 cm day<sup>−1</sup>. Woodlands in rivers with altered flood frequencies may be more sensitive to groundwater abstraction than previously thought. The study's methods offer a universal framework for refining sustainable yield calculations worldwide.</p></div>","PeriodicalId":51080,"journal":{"name":"Journal of Arid Environments","volume":null,"pages":null},"PeriodicalIF":2.6000,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Groundwater abstraction and woodland mortality: Lessons from Namibia\",\"authors\":\"Elbe Brunette , Lixin Wang , Theo D. Wassenaar\",\"doi\":\"10.1016/j.jaridenv.2024.105154\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In response to escalating worldwide groundwater dependence amid climate change, accurate estimation of sustainable groundwater yield becomes crucial. This study investigated the impact of groundwater abstraction on tree mortality in Namibia. We compared tree mortality around production boreholes with monitoring boreholes and we correlated groundwater decline rates with tree mortality, establishing a model from which we derived a groundwater decline rate range limit. Ana tree mortality was significantly higher (<em>P</em> = 0.01) around production boreholes (13.3%) than around monitoring boreholes (0%). In the dammed Swakop River, Ana tree mortality correlated with decline rates (r<sub>S</sub> = 0.64, P < 0.01). The study suggests that decline rates of above 0.2–0.23 cm day<sup>−1</sup> may cause elevated mortality (3–7%) and should not be sustained for extended periods. Rates exceeding 0.5 cm day<sup>−1</sup> should be avoided, while monitoring is recommended for rates between 0.23 and 0.5 cm day<sup>−1</sup>. Woodlands in rivers with altered flood frequencies may be more sensitive to groundwater abstraction than previously thought. The study's methods offer a universal framework for refining sustainable yield calculations worldwide.</p></div>\",\"PeriodicalId\":51080,\"journal\":{\"name\":\"Journal of Arid Environments\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.6000,\"publicationDate\":\"2024-03-26\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Arid Environments\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S014019632400034X\",\"RegionNum\":3,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ECOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Arid Environments","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S014019632400034X","RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ECOLOGY","Score":null,"Total":0}
Groundwater abstraction and woodland mortality: Lessons from Namibia
In response to escalating worldwide groundwater dependence amid climate change, accurate estimation of sustainable groundwater yield becomes crucial. This study investigated the impact of groundwater abstraction on tree mortality in Namibia. We compared tree mortality around production boreholes with monitoring boreholes and we correlated groundwater decline rates with tree mortality, establishing a model from which we derived a groundwater decline rate range limit. Ana tree mortality was significantly higher (P = 0.01) around production boreholes (13.3%) than around monitoring boreholes (0%). In the dammed Swakop River, Ana tree mortality correlated with decline rates (rS = 0.64, P < 0.01). The study suggests that decline rates of above 0.2–0.23 cm day−1 may cause elevated mortality (3–7%) and should not be sustained for extended periods. Rates exceeding 0.5 cm day−1 should be avoided, while monitoring is recommended for rates between 0.23 and 0.5 cm day−1. Woodlands in rivers with altered flood frequencies may be more sensitive to groundwater abstraction than previously thought. The study's methods offer a universal framework for refining sustainable yield calculations worldwide.
期刊介绍:
The Journal of Arid Environments is an international journal publishing original scientific and technical research articles on physical, biological and cultural aspects of arid, semi-arid, and desert environments. As a forum of multi-disciplinary and interdisciplinary dialogue it addresses research on all aspects of arid environments and their past, present and future use.