Effects of seed morphology on seed removal and plant distribution in the Chinese hill-gully Loess Plateau region
作者： Dongli Wang , Juying Jiao , Dong Lei , Ning Wang , Huadong Du
DOI: 10.1016/J.CATENA.2012.11.003
关键词: Environmental science 、 Loess plateau 、 Soil surface 、 Rainfall simulation 、 Species distribution 、 Agronomy 、 Plant strategies 、 Botany 、 Vegetation 、 Mucilage 、 Morphology (linguistics)
摘要: Abstract Seed was regarded as a limited factor of vegetation regeneration, and seed removal by water erosion may affect plant distribution on eroded slopes. This study aimed at understanding how morphology affects removal, consequently, interacts with distribution. Rainfall simulation experiments were conducted over 1 m2 plots slope 20° intensity 120 mm/h for 30 min, accompanying survey 70 sample from 16 The loss ratio (SLR) 60 species ranged 0–100%, while the displacement (SDR) 3.3–100% distance (SDD) 3.2–157.5 cm. mass played key role in process, shape, appendages, ability to segregate mucilage could modify sometimes. resisting like big mass, extreme elongated segregation useful develop However, there no uniform relationship between erosion. Some seeds prefer gentle slope, some high can slope. that distribute maybe mainly determined strategies or soil surface characteristics.
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