思政文化主题园的成功实践——广州文化公园文明苑营造手法和特色

党的十八大以来，中央高度重视培育和践行“社会主义核心价值观”（以下简称“价值观”），价值观主题园在此背景下应运而生。广州文化公园文明苑的建设，是将价值观元素融入园林营造的一次创新性实践。基于对文明苑的建设背景、设计理念、空间序列、核心节点的分析，梳理并总结出文明苑的营造特色为兼具园林游憩和主题展示功能的精巧布局、将园林意境与中华文明传承相交融的深远立意以及在建筑装饰、叠石技艺与植物造景上体现岭南地域文化。     

Values and beliefs about urban forests from diverse urban contexts and populations in the Greater Toronto area

Cities around the world are diverse. People’s perceptions of urban forests may vary according to urban contexts and people’s diverse identities. A better understanding of these diverse perceptions is critical to support stewardship initiatives, inform urban tree decisions, and guide community engagement, among other key management and governance processes in urban forestry. This study examines the values and beliefs that diverse people living in a variety of urban contexts associate with urban trees. Using an urban gradient approach, 2009 responses were collected through an online panel survey conducted in the Greater Toronto Area (GTA) to understand variations in values and beliefs of urban forests across municipal types (inner core, suburban, peri-urban, and regional cities). The GTA has an ethnoculturally diverse population, allowing us to also explore perceptions held by people with various identities. The study uses analytical techniques, such as means differences and linear regression models, to segment the diverse meanings people attribute to urban trees by municipal types and people’s identities. The results show that, while people value the urban forest very highly, people’s value orientations vary depending on their context and identities. For example, respondents who speak European or South Asian languages tend to hold value orientations related to cultural, social, and identity issues. Respondents living in inner municipal types tend to hold values related to identity issues, whereas respondents living in outer municipal types and regional cities tend to hold values related to natural issues. The results also show that people’s beliefs about urban forests are primarily positive. Urban forests managers and stewardship initiatives should recognize the diverse set of values and beliefs that people associate with urban forests, incorporating these perceptions into policy and programs. Additionally, since specific value and belief orientations may depend on personal identity and urban contexts, tailored messaging may also help generate support for policy or stewardship initiatives across different communities and in varied urban contexts.     

国家法与民间规则互动中的土地产权选择——兼论“特别法人”制度进入《民法典》

土地的空间固着特性与人的所有权心理存在着天然的矛盾，土地法因此经常表现出国家法与民间规则的互动。这种互动既是土地的公共职能与经济属性、个人使用与公众利用之间的不同追求所造成的，同时也是土地价值的多重性决定的。将土地产权设为公共所有可以协调土地多重价值与"所有"心理之间的关系、可以限制制度冲突的空间，从而保持制度的稳定，以此平衡土地的多重价值并及时对制度的发展方向做出调整。《民法典》因其稳定性和权威性而对较为成熟的规则作出规定，但"特别法人"作为集体经济组织的主体却是一项新的制度。土地公共所有及其主体归属的理论仍需进一步沉淀。     

吉林泉阳泉国家森林公园自然属性与生态价值评估

由于吉林泉阳泉国家森林公园是中国北方最大的森林矿泉景观区,其自然环境优美,景观资源丰富并且地缘优势突出,开发条件优越,具有较高的生态旅游开发价值。着重分析了吉林泉阳泉国家森林公园的自然资源与旅游资源的现状,采取定性和定量评估方法,对吉林泉阳泉国家森林公园的自然属性和生态价值进行了科学的评估,结果表明:吉林泉阳泉国家森林公园综合评估分为80分,故建议保留国家级森林公园,同时以勘察数据为基础整合优化自然资源,科学、高效推进保护地建设。以期为编制《吉林省自然保护地整合优化预案》和《吉林省自然保护地“十四五”规划》等提供重要依据。     

基于农田土壤重金属污染风险筛选值的畜禽粪污农田承载力估算

针对有机肥施用中,畜禽粪便中重金属造成农田土壤污染的问题,对重金属在养殖业-种植业生产系统中的流动过程进行分析,建立基于农田土壤重金属污染风险筛选值的畜禽粪污农田承载力估算模型,以黑龙江农垦和新疆生产建设兵团的养殖业-种植业生产系统为研究对象,计算获得相应的畜禽粪污农田承载力.结果表明:1)在水稻、玉米和大豆种植情况下...     

Happiness in urban green spaces: A systematic literature review

Urban green space is believed to contribute to residents' happiness. However, forming a holistic overview of this relationship based on regional studies is challenging. This review aims to synthesise the current evidence on the urban green space-happiness relationship. A systematic literature search was conducted on the Web of Science and Scopus between 2013 and 2023. A physical or subjective measure of urban green space and a measure of happiness served as the main inclusion criteria. The inclusion criteria for the review were met by a total of 57 studies, which received a meticulous narrative synthesis. The review featured articles from 21 countries. The way to measure and describe happiness varied greatly among the studies. The narrative synthesis reported seven physical measures and six subjective measures of urban green space associated with happiness. Results revealed the improvement in physical measures of urban green space has the possibility to elevate people’s happiness. However, the strength of these associations varied depending on subjective measures, socio-demographic variables, and socio-economic factors, particularly in the global south. The contextual nuances of the urban green space-happiness relationship were observed throughout the review. The review highlights the importance of considering the comprehensive impact of urban green space on happiness and calls for further research on the regional scale to design inclusive urban green spaces.     

盐水浇灌下六个三叶草的耐盐性评价

试验以‘Redhybrid’,‘Salina’，‘86PK1280-007’，‘Ladino’，‘Orbit’”和‘08-2’等三叶草(Trifolium L.)为材料，设置三个不同EC(Electrical Conductivity)值处理(2.5，5.0，7.5dS·m^–1)，以营养液作为对照(EC=1.2dS·m^-1)，通过研究盐水浇灌对三叶草生长，光合效率和叶绿素荧光等指标的影响，以期为三叶草耐盐性评价、耐盐品种选育及其机理研究提供理论基础。结果表明，随着EC值的增加，三叶草的GI，PH，LA，FW，SPAD，PI，Fv/Fo，Pn，Tr和WUE均是先升后降的趋势，NB，DW，DR，Ci和Gs是逐渐降低的趋势。其中，GI，PH，LA，FW，SPAD，Pn和Tr的值均是在EC2.5时最高，PI，Fv/Fo和WUE的值则是在EC5.0时最高。主成分分析表明，DR，LA，SPAD，WUE和Ci可作为三叶草的耐盐性鉴定的关键指标。隶属函数值表明，六个材料的耐盐性顺序为：Ladino>08-2>86PK1280-007>Redhybrid>Orbit>Salina。     

不同成熟度烟株根际土壤无机氮含量与叶片SPAD值及氮含量的相关性分析

采用田间调查与室内检测相结合的方法,对云南省玉溪市澄江县烤烟生产上封顶后10～12天的不同成熟度烟株进行分析研究.结果表明,烟株根际土壤无机氮含量直接影响烟株成熟度及叶片全氮含量,而土壤水解氮(有效氮)含量高低对其基本无影响;正常落黄烟株的根际土壤无机氮含量为52.4～58.8mg/kg,5叶位、10叶位、15叶位及2...