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通过综合受威胁状态和保护价值评估云南省自然植被的保护优先性
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作者 陶斯琦 杨飞龄 +1 位作者 华朝朗 武瑞东 《生物多样性》 CAS CSCD 北大核心 2024年第3期112-125,共14页
植被保护优先性评估是保护规划制定和保护资源配置的重要基础。目前,评估植被保护优先性的因子较为单一,结合多因子系统性评估植被保护优先性的研究还很有限。本研究综合考虑植被受威胁状况和保护价值,评估了云南省104类自然群系的保护... 植被保护优先性评估是保护规划制定和保护资源配置的重要基础。目前,评估植被保护优先性的因子较为单一,结合多因子系统性评估植被保护优先性的研究还很有限。本研究综合考虑植被受威胁状况和保护价值,评估了云南省104类自然群系的保护优先性。首先,根据IUCN生态系统红色名录评估框架评估群系受威胁状态;然后,选取濒危保护物种丰富度、冠层高度和碳储量3个指标,加权计算各群系的生态系统质量以表征其保护价值;最后,通过综合受威胁状态与保护价值评估云南省自然植被的保护优先性,并进一步划分为4个植被保护类型。研究结果表明:(1)在云南省104类群系中,66.3%的群系受威胁等级为易危/濒危/极危(VU/EN/CR),受到不同程度的威胁,群系的分布范围受限是导致其受威胁的关键因素。(2)45.2%的群系评估为高和极高保护价值,38.5%的群系评估为中等保护价值,植被质量整体较高。(3)综合评估建议:保护价值高或极高且受威胁的31类群系进行优先保护;保护价值中等但受威胁的26类群系进行次优先保护;保护价值极高或高但未受威胁的16类群系进行预先保护;其他群系进行一般保护。(4)云南省已建自然保护区对优先、次优先和预先保护植被的覆盖率分别为19.5%、9.7%和16.9%,还存在一定的保护空缺。本研究构建的综合受威胁状态和保护价值的植被保护优先性评估方法,能够为区域尺度生态系统水平的保护规划与行动提供科学支持。 展开更多
关键词 自然植被 群系 IUCN生态系统红色名录 受威胁状态 保护价值 云南省
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Trace-level oxygen doping in organic semiconductors:mechanistic insights and precise modulations
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作者 feiling yang Zhongwu Wang +5 位作者 Xiaosong Chen Guanjie Wang Sooncheol Kwon Yinan Huang Liqiang Li Wenping Hu 《Science China Materials》 2025年第9期3188-3193,共6页
Organic semiconductors(OSCs)are showing great promise in large-area wearable devices,optoelectronic displays,logic circuits,and next-generation optoelectronic applications[1-9].Examples include organic field-effect tr... Organic semiconductors(OSCs)are showing great promise in large-area wearable devices,optoelectronic displays,logic circuits,and next-generation optoelectronic applications[1-9].Examples include organic field-effect transistors(OFETs),organic light-emitting diodes(OLEDs),organic photovoltaic cells(OPVs),and sensing devices.However,OSCs encounter significant challenges in widespread commercialization[10-13].Compared with their inorganic counterparts connected by strong covalent bonds,the structural characteristics of OSCs films are predominantly governed by van der Waals interactions[14-19],rendering their optoelectronic properties typically dependent on the synergistic effects between intrinsic properties and extrinsic effects,such as impurities and defects[20-26]. 展开更多
关键词 organic semiconductors sensing deviceshoweveroscs organic semiconductors oscs trace level oxygen doping photovoltaic cells opvs mechanistic insights large area wearable devices optoelectronic displays
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Identifying Climatic Refugia by Integrating Continuous Heterogeneity and Discrete Classifications of Variables
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作者 Jian Zhou feiling yang +1 位作者 Wenbo Yan Ruidong Wu 《Ecosystem Health and Sustainability》 2024年第5期39-50,共12页
Climate diversity is essential for safeguarding biological diversity against climate change.Two planning approaches based on continuous heterogeneity or discrete classification have previously been implemented to iden... Climate diversity is essential for safeguarding biological diversity against climate change.Two planning approaches based on continuous heterogeneity or discrete classification have previously been implemented to identify climatic refugia.However,little is known about the performance of the integration of the 2 measurements for identifying climatic refugia.Using the case of Yunnan in southwest China,we examined the relationship between 2 measurements of climatic heterogeneity:the continuous climatic heterogeneity index(CCHI)and the variety of climatic units(VCU). 展开更多
关键词 identify climatic refugiahoweverlittle discrete classification planning approaches continuous climatic heterogen identifying climatic refugiausing safeguarding biological diversity continuous heterogeneity integration measurements
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