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首页> 外文期刊>Plant and Soil >Effects of colony nesting of Ardea cinerea and Egretta alba modesta on soil properties and herb layer composition in a Pinus densiflora forest.
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Effects of colony nesting of Ardea cinerea and Egretta alba modesta on soil properties and herb layer composition in a Pinus densiflora forest.

机译：灰质苍鹭和白鹭草的菌落嵌套对松果林土壤特性和草本层组成的影响。

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摘要

Effects of nesting of colonies of herons on soil properties and herb layer composition in Pinus densiflora forest were studied at Pomaeri, Kangwon Province, Korea Republic. Herons use this area as a nesting site from January to October every year. In 1995, more than 500 herons were observed at this site. Nutrient content of the soil was much higher at the nesting site than at a control site. Total nitrogen concentrations of the soil at the nesting site and the control site were 14.8 ?1.85 and 2.8?0.35 mg/g soil, respectively. Phosphorus content of the soil at the nesting site was 32 times greater than that at the control site. This is evidently due to the addition of faeces of the herons, and decomposition of thin twigs and organic debris fromthe canopy of dead trees and birds' nests. Light intensity at the herb layer of the nesting site and of the control site was 80 and 20%, respectively, of incident light in the open. The species diversity of the herb layer at the nesting site (9 species)was lower than that at the control site (14 species). The similarity index of the herb layer between the two sites was 0.07. The nesting site was dominated by indicator species of soil eutrophication such as Humulus japonicus [H. japonica], Persicaria perfoliata [Polygonum perfoliatum], P. fauriei, Commelina communis and Chelidonium majus var. asiaticum. Changes in herb species composition at the nesting site were evidently due to the eutrophication of the soil and increased light intensity at the herblayer.
机译：在韩国江原道的Pomaeri，研究了苍鹭群的筑巢对松果林土壤特性和草本层组成的影响。每年1月至10月，苍鹭都会将该区域用作筑巢地点。 1995年，在该地点观测到500多只苍鹭。筑巢处土壤的养分含量比对照处高得多。筑巢点和对照点土壤的总氮浓度分别为14.8±1.85和2.8±0.35 mg / g土壤。筑巢处土壤的磷含量比对照处高32倍。这显然是由于添加了苍鹭的粪便，以及枯死的树木和鸟巢的冠层分解了细树枝和有机碎片所致。嵌套位点和对照位点的药草层的光强度分别是开阔处入射光的80％和20％。巢点的草本层物种多样性（9种）低于对照点的草本物种多样性（14种）。两个部位之间的草药层相似度为0.07。筑巢地点主要由富营养化的指示物种如日本草（Humulus japonicus）［H。日本），Persicaria perfoliata [Polygonum perfoliatum]，P。fauriei，Commmelina communis和Chelidonium majus var。积雪草。筑巢处草本物种组成的变化显然是由于土壤富营养化和草本层光强度增加所致。

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