Soil Fauna of Ranibari Community Forest, Kathmandu, Nepal

Q3 Environmental Science

Ekologia Bratislava Pub Date : 2022-03-01 DOI:10.2478/eko-2022-0003

P. Shrestha, P. Budha

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引用次数: 1

Abstract

Abstract Ranibari Community Forest (RCF) is the important forest patch present within the highly urbanized Kathmandu Valley with information gaps on soil fauna. This study aimed to explore the soil meso and macrofauna of the forest. Fourteen random quadrats (1 × 1 m2) were laid within seven blocks. Leaf litter samples and soil cores were collected, screened, sieved, and searched under a white sheet, once a fortnight from May to November 2019. The results showed that the diversity, abundance, and richness of soil fauna were the highest in the summer season (H´ = 2.897, abundance = 1,973, S = 84) dominated by Collembola. The Soil Biological Quality Index (QBS-ar) value was also found to be the highest in summer (QBS-ar = 417) and successively decreased in succeeding seasons. Soil fauna was diverse and evenly distributed in soil layers throughout the seasons, but the abundance was greater in leaf litters, particularly in summer. Fauna like Chilopoda, Diplopoda, Haplotaxida, and Isopoda were seen to be affected negatively by soil temperature in summer and autumn seasons. Soil moisture content was found to be positively correlated with immature insects, earthworms, and millipedes in the rainy and autumn seasons. Besides, the pH of the soil was seen to affect Diplura only in the autumn season. The relation of fauna with the physicochemical parameters (temperature, moisture, and pH) and also with other taxa showed their ecological roles and adaptation to a specific microclimate.

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尼泊尔加德满都Ranibari群落森林的土壤动物群

摘要/ Abstract摘要:Ranibari Community Forest (RCF)是加德满都谷地高度城市化的重要森林斑块，但在土壤动物方面存在信息缺口。本研究旨在探讨森林土壤中、大型动物。在七个街区内放置14个随机样方(1 × 1 m2)。从2019年5月至11月，每两周收集一次凋落叶样本和土壤芯，在白布下进行筛选、筛选和搜索。结果表明:土壤动物的多样性、丰度和丰富度在夏季最高，H´= 2.897，丰度= 1973,S = 84，以线虫为主;土壤生物质量指数(QBS-ar)值在夏季最高(QBS-ar = 417)，随后的季节依次降低。土壤动物在各土层中分布均匀，但在凋落叶中丰度较大，特别是在夏季。在夏季和秋季土壤温度对七足纲、双足纲、单足纲和等足纲动物群的影响为负。在雨季和秋季，土壤含水量与未成熟昆虫、蚯蚓和千足虫呈正相关。此外，土壤pH值仅在秋季对双翅草有影响。动物群与物化参数(温度、湿度和pH)的关系以及与其他类群的关系显示了它们的生态作用和对特定小气候的适应。

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来源期刊

Ekologia Bratislava Environmental Science-Ecology

CiteScore

1.80

自引率

0.00%

发文量

审稿时长

10 weeks

期刊介绍： The Journal Ecology (Bratislava) places the main emphasis on papers dealing with complex characteristics of ecosystems. Treated are not only general, theoretical and methodological but also particular practical problems of landscape preservation and planning. The ecological problems of the biosphere are divided into four topics: ecology of populations: study of plant and animal populations as basic components of ecosystems, ecosystem studies: structure, processes, dynamics and functioning of ecosystems and their mathematical modelling, landscape ecology: theoretical and methodical aspects, complex ecological investigation of territorial entities and ecological optimization of landscape utilization,