The undergrowth composition and distribution in different forest area utilization

Abstract

Abstract. Sidabukke SH, Barus TA, Utomo B, Delvian. 2021. The undergrowth composition and distribution in different forest area utilization. Biodiversitas 22: 5255-5261. Forests provide natural raw materials to support various human activities and also demonstrate a wide range of biodiversity, both in terms of wildlife and plants. Based on biological resources, undergrowth species form a significant portion of the forest ecosystems and have overgrown the typical wooden plants. These ground cover/undergrowth groups are known to exhibit diverse complexities and a type of basic vegetation existing under the forest stands. Therefore, the purpose of this study is to determine the composition and distribution of undergrowth species in each forest area designation, including industrial, protected and natural forests. The plot technique was employed, with an area of 2 m x 2 m. This involves a total of 480, 224 and 96 plots in the industrial plantations, protected and natural forest areas, respectively. Also, the entire plants in the measuring plot were recorded, starting from the sprouts up to 1.5 m high. Subsequently, the important value index (IVI) and Morisita index methods were applied in the data analysis. The results showed the occurrence of 98, 57 and 33 undergrowth species in industrial, protected as well as in natural forests, correspondingly. Based on the important value index calculations, Sintrong species (Crassocephalum crepidioides) reported the maximum IVI (31.587%) in industrial forest plantations, alongside Senduduk (Melastoma malabathricum) and Paku Wangi (Phymatosorus scolependria) in the protected areas (29.951%) and natural forests (29.551%), respectively. Furthermore, the Morisita index indicated that the undergrowth distribution pattern for the three areas was clustered, uniform and random, but with varying percentages. However, only two distribution patterns, including random and clustered were peculiar to the natural forests.

Diversity, risk and management feasibility of invasive alien plants in the border zone of Sicike-cike Nature Tourism Park, North Sumatra, Indonesia

“…The vegetation data collected were then analyzed for Relative Density (RD), Relative Frequency (RF), and Important Value Index (IVI) using the formulas suggested by Sidabukke et al (2021) The risk value and management feasibility of the invasive alien plants were determined based on the international standards followed . The risk value was obtained by multiplying the criteria for invasiveness, impact, and distribution potential as follows:…”

Using biodiversity indices to assess the current state of tugai vegetation of the Amu Darya River, Uzbekistan

“…This study aimed to evaluate representative associations of tugai of the Amudarya (Uzbekistan) using biodiversity indices. The assessment of the state of ecosystems using biodiversity indices can be seen in highly rated international journals (Sidabukke et al 2021;Murdjoko et al 2021;Sahputra et al 2022;Taguiam et al 2022;Ekawaty et al 2022).…”

The Existence of Undergrowth at Forest Garden Stands in Grand Forest Park, Lampung Province

“…The species of undergrowth is one component that has an important role in forest ecosystems as well as in land ecosystems with complex agroforestry (Widyastuti et al, 2018). The roles of undergrowth are to protect the soil from raindrops and erosion from surface runoff (Marfi, 2018), increase organic matter in the soil (Latifah et al, 2022;Marfi, 2018), contribute to increased biodiversity, play a role in driving the nutrient cycle (Fang et al, 2014), as well as controlling the micro-climate (Sidabukke et al, 2021). In addition, the undergrowth has economic value because it can be used for traditional medicinal ingredients (Nguyen et al, 2019), and source of animal feed ingredients (Marfi, 2018).…”

“…The existence of undergrowth species depends on the land use system. The agroforestry system applied to land management can maintain biodiversity, including the diversity of undergrowth species (Sidabukke et al, 2021). According to…”