{"title":"Different Urbanization Levels Lead to Divergent Responses of Spring Phenology","authors":"Chaoya Dang, Zhenfeng Shao, Xiao Huang, Gui Cheng, Jiaxin Qian","doi":"10.14358/pers.23-00008r2","DOIUrl":null,"url":null,"abstract":"Urban vegetation phenology is important for understanding the relationship between human activities on urban ecosystems and carbon cycle. The relationship between urban and rural vegetation phenology and environmental and meteorological factors were studied across urban-rural gradients. However, the relationship of intra-urban urbanization intensity (UI) gradients on vegetation at the start of season (SOS) is unclear. Here, we used remote sensing data to quantitatively assess the relationship of vegetation SOS to UI gradients at mid-high latitudes in the northern hemisphere. The results showed that urban area vegetation SOS widely presented earlier than for rural area vegetation. Across the cities we investigated the extent UI gradient was prevalent as a threshold (33.2% ± 2.3%) of surface temperature to SOS advance enhancement and offset. At low urbanization enhanced surface temperature on sos advances, while at high urbanization offset surface temperature on SOS advances. Overall, UI demonstrated a nonlinear relationship with sos. The results of this study suggest that there may be thresholds of impact on vegetation SOS in future global climate and environment change processes, where opposite effects can occur below and above thresholds.","PeriodicalId":49702,"journal":{"name":"Photogrammetric Engineering and Remote Sensing","volume":null,"pages":null},"PeriodicalIF":1.0000,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Photogrammetric Engineering and Remote Sensing","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.14358/pers.23-00008r2","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"GEOGRAPHY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Urban vegetation phenology is important for understanding the relationship between human activities on urban ecosystems and carbon cycle. The relationship between urban and rural vegetation phenology and environmental and meteorological factors were studied across urban-rural gradients. However, the relationship of intra-urban urbanization intensity (UI) gradients on vegetation at the start of season (SOS) is unclear. Here, we used remote sensing data to quantitatively assess the relationship of vegetation SOS to UI gradients at mid-high latitudes in the northern hemisphere. The results showed that urban area vegetation SOS widely presented earlier than for rural area vegetation. Across the cities we investigated the extent UI gradient was prevalent as a threshold (33.2% ± 2.3%) of surface temperature to SOS advance enhancement and offset. At low urbanization enhanced surface temperature on sos advances, while at high urbanization offset surface temperature on SOS advances. Overall, UI demonstrated a nonlinear relationship with sos. The results of this study suggest that there may be thresholds of impact on vegetation SOS in future global climate and environment change processes, where opposite effects can occur below and above thresholds.
期刊介绍:
Photogrammetric Engineering & Remote Sensing commonly referred to as PE&RS, is the official journal of imaging and geospatial information science and technology. Included in the journal on a regular basis are highlight articles such as the popular columns “Grids & Datums” and “Mapping Matters” and peer reviewed technical papers.
We publish thousands of documents, reports, codes, and informational articles in and about the industries relating to Geospatial Sciences, Remote Sensing, Photogrammetry and other imaging sciences.