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对广东省东莞清溪林场短萼仪花(Lysidice brevicalyx Wei)群落的群落结构及其多样性特点和土壤肥力状况进行了研究。共设置了8个400m2的样方,4个样方设置于连片分布的沟谷林中,其余4个样方设置在山坡上零散分布的大树周围。在调查样方中共记录了维管植物142种,隶属于68科103属。沟谷片生林样方的Shan-non指数高于散生树丛群落,山坡散生树丛样方的物种丰富度和均匀度指数高于沟谷林群落,相似性指数为0.41。两类群落的短萼仪花种群均缺乏小苗和幼树,种群结构呈衰退型。现有短萼仪花群落的土壤肥力与邻近的灌草丛群落相近,但较东莞市荔枝园和人工林地稍高。
The community structure, diversity characteristics and soil fertility of Lysidice brevicalyx Wei community in Qingxi forest farm, Dongguan, Guangdong were studied. A total of eight 400m2 quadrats were set up. Four quadrats were arranged in contiguous gulch forests and the remaining four quadrats were arranged around scattered trees on the hillsides. A total of 142 species of vascular plants were recorded in the surveyed quadrats, belonging to 68 families and 103 genera. The Shan-non index of the forest quadrats in the gully patches was higher than that of the scattered gnarly communities, and the species richness and evenness index of the scattered tree-like quadrats on the hillsides were higher than that of the gully forest community. The similarity index was 0.41. Both populations of P. calyx were lack of seedlings and saplings, and the population structure showed decline type. The soil fertility of the existing Calendula officinalis community is similar to that of the adjacent shrub community, but slightly higher than that of the litchi garden and plantation in Dongguan City.