东莞燕岭湿地公园6种植物群落持水特性研究

Study on Community Characteristics of Six Plant Species in Yanling Wetland Park, Dongguan

在东莞燕岭湿地公园选择6种植物群落,调查其植物组成、枯落物层以及土壤层的持水特性。结果表明:样地植物共有72种,隶属于45科64属;6种植物群落的乔灌草各层基本上均由3种植物组成;落羽杉Taxodium distichum群落种植密度最大;各样地枯落物的蓄积量无显著差异,银合欢Leucaena leucocephala群落和黄槐决明Cassia surattensis+红花羊蹄甲Bauhinia blakeana群落枯落物对降水的拦蓄能力最好。黄槐决明+木棉Bombax ceiba群落的土壤容重最大;黄槐决明+红花羊蹄甲和黄槐决明+木棉群落的土壤贮水能力较强;水黄皮Pongamia pinnata群落土壤吸收、贮存降水的能力较强;黄槐决明+木棉群落涵养水源效果较好。

Six plant communities were selected in Dongguan Yanling Wetland Park to investigate their plant composition, litter layer, and water-holding characteristics of the soil layer. The results showed that there were 72 species of plants in the sample plot, belonging to 45 families and 64 genera;Each layer of arbor, shrub, and grass of 6 plant communities is composed of 3 plants. Taxodium distichum community has the highest planting density. There is no significant difference in the amount of litter accumulation among different sites. Leucaena leucocephala community and the Cassia surattensis+Bauhinia blakeana community have the best ability to retain precipitation. The soil bulk density of Cassia surattensis+Bombax ceiba community is the largest;The soil water storage capacity of Cassia surattensis+Bombax ceiba community and Cassia surattensis+Bauhinia blakeana community is strong;The soil of Pongamia pinnata community has a strong ability to absorb and store precipitation;Cassia surattensis+Bombax ceiba community has good water conservation effect.