This study explores the motivations,perceived benefits,and challenges associated with the adoption of clearcutfree forestry by early adopters among non-industrial private forest(NIPF)owners in southern-central Sweden....This study explores the motivations,perceived benefits,and challenges associated with the adoption of clearcutfree forestry by early adopters among non-industrial private forest(NIPF)owners in southern-central Sweden.Clearcut-free forestry,characterized by continuous tree cover and an emphasis on biodiversity,structural diversity,and ecosystem services(ES),is increasingly seen as a sustainable alternative to conventional intensive management based on short rotations and clear-cutting practices.Based on qualitative interviews with 22 NIPF owners who have adopted this approach,the study provides insights into how these early adopters perceive the value of clearcut-free forestry.Reported motivations include environmental concerns,such as biodiversity conservation and climate resilience,as well as strong socio-cultural values linked to family traditions,aesthetic preferences,and community wellbeing.In this study,we use the multi-level perspective(MLP)framework to conceptualize NIPF owners who have adopted clearcut-free forestry as niche actors and analyze their potential contribution to the emergence of an alternative forest management regime.The findings highlight that early adopters associate multiple benefits with clearcut-free forestry,encompassing enhanced ecosystem services such as carbon sequestration,water regulation,habitat preservation,and socio-cultural enrichment through recreation and relational values.However,the interviewees identify several interrelated challenges,including knowledge gaps,lack of clear definitions and standardized practices,limited advisory services,underdeveloped value chains for high-quality timber,and market barriers,which hinder more widespread adoption.Within the multi-level perspective,owner perceptions linking clearcut-free management with improved forest multifunctionality serve as a key driver of niche-level experimentation.This suggests an alignment between these owners and evolving societal demands for more inclusive,sustainable,and diversified forest use.Policy recommendations include targeted investments in knowledge co-production,infrastructure,market incentives,and certification schemes to support the economic viability and broader adoption of clearcut-free forestry.展开更多
主要乳胶蛋白(major latex protein,MLP)是Bet v 1超家族成员,参与植物的各种应激反应。本研究对桑树主要乳胶蛋白基因MaMLP423的启动子pMaMLP423进行了生物信息学分析和克隆表达分析。结果显示pMaMLP423具有启动子必需的TATA-box和CAAT...主要乳胶蛋白(major latex protein,MLP)是Bet v 1超家族成员,参与植物的各种应激反应。本研究对桑树主要乳胶蛋白基因MaMLP423的启动子pMaMLP423进行了生物信息学分析和克隆表达分析。结果显示pMaMLP423具有启动子必需的TATA-box和CAAT-box等基本顺式作用元件,还有参与光响应(Box 4、TCT-motif、GA-motif等)、脱落酸反应(ABRE、AAGAA-motif)、乙烯响应(ERE)、干旱诱导(MYB、MBS等)、创伤响应(WUN-motif)等顺式作用元件。构建植物表达载体pMaMLP423及缺失部分序列的pMaMLP423ΔS1和pMaMLP423ΔS2,转化烟草瞬时表达,qPCR和组织化学染色检测显示,三个启动子均能驱动下游GUS基因的表达,但缺失S1和S2启动子的活性降低。外源激素脱落酸和乙烯利能显著诱导MaMLP4232基因的表达。本研究为深入了解MaMLP423的功能和作用提供了参考。展开更多
基金financed by a grant from Mistra[DIA 2019/28]and from Formas via the National Research Programme on Climate(2021–00416)FORMAS,Grant Nos.2022-02146 and 2021–01067Swedish Environmental Protection Agency Research Grant No.2021–00040。
文摘This study explores the motivations,perceived benefits,and challenges associated with the adoption of clearcutfree forestry by early adopters among non-industrial private forest(NIPF)owners in southern-central Sweden.Clearcut-free forestry,characterized by continuous tree cover and an emphasis on biodiversity,structural diversity,and ecosystem services(ES),is increasingly seen as a sustainable alternative to conventional intensive management based on short rotations and clear-cutting practices.Based on qualitative interviews with 22 NIPF owners who have adopted this approach,the study provides insights into how these early adopters perceive the value of clearcut-free forestry.Reported motivations include environmental concerns,such as biodiversity conservation and climate resilience,as well as strong socio-cultural values linked to family traditions,aesthetic preferences,and community wellbeing.In this study,we use the multi-level perspective(MLP)framework to conceptualize NIPF owners who have adopted clearcut-free forestry as niche actors and analyze their potential contribution to the emergence of an alternative forest management regime.The findings highlight that early adopters associate multiple benefits with clearcut-free forestry,encompassing enhanced ecosystem services such as carbon sequestration,water regulation,habitat preservation,and socio-cultural enrichment through recreation and relational values.However,the interviewees identify several interrelated challenges,including knowledge gaps,lack of clear definitions and standardized practices,limited advisory services,underdeveloped value chains for high-quality timber,and market barriers,which hinder more widespread adoption.Within the multi-level perspective,owner perceptions linking clearcut-free management with improved forest multifunctionality serve as a key driver of niche-level experimentation.This suggests an alignment between these owners and evolving societal demands for more inclusive,sustainable,and diversified forest use.Policy recommendations include targeted investments in knowledge co-production,infrastructure,market incentives,and certification schemes to support the economic viability and broader adoption of clearcut-free forestry.
文摘为比较多区正向离焦镜片(传统多点离焦技术,defocus incorporated multiple segments,DIMS)与费马螺旋多点雾化镜片(微点阵多透镜集合技术,Micro Lens Panel,MLP)对儿童青少年近视的防控效果,本文选取8~12岁近视儿童青少年60例共120眼,均为连续配戴≥12个月的DIMS、MLP镜片者进行自身对照回顾性研究,并对眼轴长度、球镜及柱镜度数的变化进行了分析。结果显示,在控制眼轴年增长量(MLP:0.05~0.06mm vs DIMS:0.19~0.20mm)、保持球镜度数稳定年加深(MLP:0.10~0.12D vs DIMS:0.23~0.25D)、改善散光年加深(MLP:-0.03~-0.05D vs DIMS:0.10~0.11D)方面,MLP镜片均显著优于DIMS镜片(P<0.0001),MLP镜片延缓近视加深有效率为82.06%,回退眼轴比例为41.67%。结论:MLP更适合于散光或者近视快速进展的孩子,DIMS为单纯缓慢进展的近视孩子提供基本防控,并且可作为个体化近视防控的基础。
