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The present study analyses the effects of the physical characteristics of the visual landscape on soundscape perception in city parks, based on information gathered in field surveys using a specifically designed soundwalk method in five city parks in China. Three soundscape parameters were conceived, including perceived loudness of individual sounds (PLS), perceived occurrence of individual sounds (POS) and soundscape diversity index (SDI), which were found to correlate and should thus be applied in concert. Physical characteristics of the visual landscape were analysed from two perspectives, i.e., by on-site landscape composition and local landscape spatial patterns. The results suggest that the percentage of buildings, vegetation and sky in panoramic views (here photos) were effective landscape elements influencing soundscape perception. The landscape shape index of buildings and water areas (LSI_B, LSI_W) and the patch cohesion index of water areas (COHESION_W) showed positive effects on the perception of human sounds. The percentage of roads (PLAND_R) and the largest patch index of roads (LPI_R) were related to traffic sounds. Both the PLS and POS of biological sounds were negatively related to LPI_W and LSI_B, respectively, whilst the POS of biological sounds was positively related to PLAND_R, and LSI_R. COHESION_R was the only index negatively related to both the PLS and POS of geophysical sounds. SDI only showed positive relationship with PLAND_W. Overall, the results reveal that local landscape spatial patterns could be more influential on soundscape perception than on-site landscape composition. The study proposed introducing soundscape information from different sources into landscape management.

Biomineralization in vertebrates is a ubiquitous and tightly regulated process which creates hierarchical structures for the skeleton. Because of the lack of understanding and applicability of cell‐based or biological systems to achieve intrafibrillar mineralization, scientists adopted various in vitro methods to elucidate the mechanism of intrafibrillar mineralization. In this article, biomimetic intrafibrillar mineralization of collagen in its wide ramifications is reviewed. It is intriguing how prevailing intrafibrillar mineralization mechanisms derived from two potentially discordant crystallization philosophies were equally adept, depending on the experimental context, at theorizing the formation of calcium phosphate within a fibrillar template. This complementarity is not unique to biomineralization and has precedence in other fundamental physical interpretations. A new intrafibrillar mineralization process based on the use of polycationic process‐directing agent added uncertainty to the use of existing mechanisms in accounting for the observations.

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Abstract. Atmospheric boundary layer (ABL) processes are important in climate, weather and air quality. A better understanding of the structure and the behavior of the ABL is required for understanding and modeling of the chemistry and dynamics of the atmosphere on all scales. Based on the systematic variations of the ABL structures over different surfaces, different lidar-based methods were developed and evaluated to determine the boundary layer height and mixing layer height over land and ocean. With Atmospheric Radiation Measurement Program (ARM) Climate Research Facility (ACRF) micropulse lidar (MPL) and radiosonde measurements, diurnal and season cycles of atmospheric boundary layer depth and the ABL vertical structure over ocean and land are analyzed. The new methods are then applied to satellite lidar measurements. The aerosol-derived global marine boundary layer heights are evaluated with marine ABL stratiform cloud top heights and results show a good agreement between them.

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