地表花粉组合作为西南土地利用和人为植被变化的指示物:对古生态重建的启示

IF 5.7 1区 农林科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY
Jian Ni , Shixiong Yang , Yumei Li , Yun Zhang
{"title":"地表花粉组合作为西南土地利用和人为植被变化的指示物:对古生态重建的启示","authors":"Jian Ni ,&nbsp;Shixiong Yang ,&nbsp;Yumei Li ,&nbsp;Yun Zhang","doi":"10.1016/j.catena.2025.109307","DOIUrl":null,"url":null,"abstract":"<div><div>The influence of human activities on vegetation has been extensively documented in sedimentary pollen records, highlighting the importance of understanding the relationship between modern human activities and land use when reconstructing historical vegetation changes using pollen data. How can modern surface pollen from human disturbed vegetation indicate potential vegetation or land use type, however, still need to pay more attention. This research analyzes pollen assemblages derived from 117 surface soil samples collected in Southwest China. It elucidates the characteristics of these pollen assemblages and their source ranges across various land use types, as well as the indicative significance of predominant pollen types in relation to vegetation composition. The findings reveal that regional pollen assemblages are predominantly comprised of <em>Pinus</em>, <em>Tsuga</em>, deciduous <em>Quercus</em>, evergreen <em>Quercus</em>, and <em>Betula</em>, which collectively dominate the assemblages. Notably, there are marked differences in the characteristics of pollen assemblages associated with distinct land use types. Specifically, cultivated lands and plantation forests are mainly dominated by artificially selected plants, while secondary forests are mainly dominated by naturally distributed vegetation. Within a radius of 0–200 m from the sampling locations, significant variability in vegetation composition is observed among different sites, reflecting local vegetation characteristics. Conversely, at distances ranging from 0.2 to 20 km, as the spatial separation between sampling points increases, the disparities in vegetation composition and the proportional representation of various land use types diminish, leading to a more homogeneous landscape. At this spatial scale, the correlation between pollen assemblages and vegetation is significantly strengthened, with vegetation accounting for over 90 % of the pollen composition. Thus, the pollen dominantly reflects the regional vegetation characteristics. These results underscore the importance of thoroughly considering the relationship between the contribution rate of pollen assemblages and the composition of regional vegetation when reconstructing regional vegetation patterns through pollen analysis.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"258 ","pages":"Article 109307"},"PeriodicalIF":5.7000,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Surface pollen assemblages as indicators of land-use and human-induced vegetation changes in Southwest China: implications for palaeoecological reconstructions\",\"authors\":\"Jian Ni ,&nbsp;Shixiong Yang ,&nbsp;Yumei Li ,&nbsp;Yun Zhang\",\"doi\":\"10.1016/j.catena.2025.109307\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The influence of human activities on vegetation has been extensively documented in sedimentary pollen records, highlighting the importance of understanding the relationship between modern human activities and land use when reconstructing historical vegetation changes using pollen data. How can modern surface pollen from human disturbed vegetation indicate potential vegetation or land use type, however, still need to pay more attention. This research analyzes pollen assemblages derived from 117 surface soil samples collected in Southwest China. It elucidates the characteristics of these pollen assemblages and their source ranges across various land use types, as well as the indicative significance of predominant pollen types in relation to vegetation composition. The findings reveal that regional pollen assemblages are predominantly comprised of <em>Pinus</em>, <em>Tsuga</em>, deciduous <em>Quercus</em>, evergreen <em>Quercus</em>, and <em>Betula</em>, which collectively dominate the assemblages. Notably, there are marked differences in the characteristics of pollen assemblages associated with distinct land use types. Specifically, cultivated lands and plantation forests are mainly dominated by artificially selected plants, while secondary forests are mainly dominated by naturally distributed vegetation. Within a radius of 0–200 m from the sampling locations, significant variability in vegetation composition is observed among different sites, reflecting local vegetation characteristics. Conversely, at distances ranging from 0.2 to 20 km, as the spatial separation between sampling points increases, the disparities in vegetation composition and the proportional representation of various land use types diminish, leading to a more homogeneous landscape. At this spatial scale, the correlation between pollen assemblages and vegetation is significantly strengthened, with vegetation accounting for over 90 % of the pollen composition. Thus, the pollen dominantly reflects the regional vegetation characteristics. These results underscore the importance of thoroughly considering the relationship between the contribution rate of pollen assemblages and the composition of regional vegetation when reconstructing regional vegetation patterns through pollen analysis.</div></div>\",\"PeriodicalId\":9801,\"journal\":{\"name\":\"Catena\",\"volume\":\"258 \",\"pages\":\"Article 109307\"},\"PeriodicalIF\":5.7000,\"publicationDate\":\"2025-07-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Catena\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0341816225006095\",\"RegionNum\":1,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"GEOSCIENCES, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Catena","FirstCategoryId":"97","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0341816225006095","RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"GEOSCIENCES, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0

摘要

人类活动对植被的影响已经在沉积花粉记录中得到了广泛的记录,这凸显了在利用花粉数据重建历史植被变化时,理解现代人类活动与土地利用之间关系的重要性。然而,人类干扰植被的现代地表花粉如何指示潜在的植被或土地利用类型,仍然需要更多的关注。本研究分析了中国西南地区采集的117份表层土壤样品的花粉组合。阐明了不同土地利用类型花粉组合的特征及其来源范围,以及优势花粉类型与植被组成的指示意义。结果表明,区域花粉组合以松属、杉木属、落叶栎属、常绿栎属和桦木属为主。值得注意的是,不同土地利用类型的花粉组合特征存在显著差异。其中,耕地和人工林以人工选择的植物为主,次生林以自然分布的植被为主。在距离采样点0 ~ 200 m的范围内,不同采样点之间的植被组成存在显著差异,反映了当地的植被特征。相反,在0.2 ~ 20 km范围内,随着采样点间空间间隔的增加,植被组成差异和不同土地利用类型的比例代表性减小,景观更加均匀。在此空间尺度上,花粉组合与植被的相关性显著增强,植被占花粉组成的90%以上。因此,花粉主要反映了区域植被特征。这些结果表明,在通过花粉分析重建区域植被格局时,应充分考虑花粉组合的贡献率与区域植被组成之间的关系。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Surface pollen assemblages as indicators of land-use and human-induced vegetation changes in Southwest China: implications for palaeoecological reconstructions
The influence of human activities on vegetation has been extensively documented in sedimentary pollen records, highlighting the importance of understanding the relationship between modern human activities and land use when reconstructing historical vegetation changes using pollen data. How can modern surface pollen from human disturbed vegetation indicate potential vegetation or land use type, however, still need to pay more attention. This research analyzes pollen assemblages derived from 117 surface soil samples collected in Southwest China. It elucidates the characteristics of these pollen assemblages and their source ranges across various land use types, as well as the indicative significance of predominant pollen types in relation to vegetation composition. The findings reveal that regional pollen assemblages are predominantly comprised of Pinus, Tsuga, deciduous Quercus, evergreen Quercus, and Betula, which collectively dominate the assemblages. Notably, there are marked differences in the characteristics of pollen assemblages associated with distinct land use types. Specifically, cultivated lands and plantation forests are mainly dominated by artificially selected plants, while secondary forests are mainly dominated by naturally distributed vegetation. Within a radius of 0–200 m from the sampling locations, significant variability in vegetation composition is observed among different sites, reflecting local vegetation characteristics. Conversely, at distances ranging from 0.2 to 20 km, as the spatial separation between sampling points increases, the disparities in vegetation composition and the proportional representation of various land use types diminish, leading to a more homogeneous landscape. At this spatial scale, the correlation between pollen assemblages and vegetation is significantly strengthened, with vegetation accounting for over 90 % of the pollen composition. Thus, the pollen dominantly reflects the regional vegetation characteristics. These results underscore the importance of thoroughly considering the relationship between the contribution rate of pollen assemblages and the composition of regional vegetation when reconstructing regional vegetation patterns through pollen analysis.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Catena
Catena 环境科学-地球科学综合
CiteScore
10.50
自引率
9.70%
发文量
816
审稿时长
54 days
期刊介绍: Catena publishes papers describing original field and laboratory investigations and reviews on geoecology and landscape evolution with emphasis on interdisciplinary aspects of soil science, hydrology and geomorphology. It aims to disseminate new knowledge and foster better understanding of the physical environment, of evolutionary sequences that have resulted in past and current landscapes, and of the natural processes that are likely to determine the fate of our terrestrial environment. Papers within any one of the above topics are welcome provided they are of sufficiently wide interest and relevance.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信