Buller David B, Kinsey Alishia, Sullivan Taylor, Gruetter Phoebe, Morrissey-Basler Margaret C, Buller Ian D, Heckman Carolyn J
Research, Klein Buendel, Inc., Golden, CO, United States.
Science Department, Science Park High School, Newark, NJ, United States.
Front Public Health. 2025 Jul 14;13:1565251. doi: 10.3389/fpubh.2025.1565251. eCollection 2025.
Shade is an essential environmental feature to prevent heat illnesses and skin cancer. Written policies related to shade were described in municipalities in four southwest and four northeast U.S. states.
Municipal codes, planning documents, and manuals/guidelines from municipalities ( = 48) in eight U.S. states were coded for content related to shade by research assistants. They used a standardized protocol to assign numeric codes to each document to assess type of document, type of shade, location, resource allocation, accountability, and design standards. Results were summarized using descriptive statistics.
Three quarters of municipalities (75.0%) had a policy document that addressed shade, including municipal codes (54.2%), planning documents (29.2%), and manuals/guidelines (12.5%). Protecting from heat (31.3%) was mentioned in policies more than protecting from ultraviolet radiation (8.3%), as was natural shade (56.3%) rather than constructed shade (25.0%). Policies prescribed several design standards, most frequently shade material, proportion of area covered, and attractiveness. Half (50.0%) of municipalities mentioned accountability for shade in the policy, but only a third (35.4%) addressed resource allocation. Regional differences were seen in policy document type, shade type, locations, design standards, and resource allocation.
Many municipalities had policies that mentioned shade, but only a minority of policies indicated that the purpose of the policy was protection from heat or ultraviolet radiation. In northeast municipalities, which can have local home rule traditions, policies on shade appeared almost entirely in municipal codes. Southwest municipalities often included policies in planning documents that may have less legal force than municipal codes.
阴凉处是预防中暑和皮肤癌的重要环境特征。美国西南部和东北部四个州的城市制定了与阴凉处相关的书面政策。
美国八个州48个城市的城市法规、规划文件以及手册/指南由研究助理针对与阴凉处相关的内容进行编码。他们使用标准化方案为每份文件分配数字代码,以评估文件类型、阴凉处类型、位置、资源分配、问责制和设计标准。结果采用描述性统计进行总结。
四分之三的城市(75.0%)有涉及阴凉处的政策文件,包括城市法规(54.2%)、规划文件(29.2%)和手册/指南(12.5%)。政策中提及预防中暑(31.3%)的次数多于预防紫外线辐射(8.3%),提及自然阴凉处(56.3%)的次数多于人工建造的阴凉处(25.0%)。政策规定了若干设计标准,最常见的是阴凉材料、覆盖面积比例和美观性。一半(50.0%)的城市在政策中提到了对阴凉处的问责,但只有三分之一(35.4%)涉及资源分配。在政策文件类型、阴凉处类型、位置、设计标准和资源分配方面存在地区差异。
许多城市有提及阴凉处的政策,但只有少数政策表明其目的是预防中暑或紫外线辐射。在可能有地方自治传统的东北部城市,关于阴凉处的政策几乎完全出现在城市法规中。西南部城市通常在规划文件中纳入政策,而这些文件的法律效力可能低于城市法规。