Variasi Umur Tanaman Reklamasi Terhadap Struktur dan Komposisi Vegetasi di Areal Reklamasi Tambang PT Kideco Jaya Agung, Paser, Kalimantan Timur

2021 ◽  
Vol 20 (1) ◽  
pp. 13-21
Author(s):  
Slamet Rahmadi ◽  
Paulus Matius ◽  
Agung Adhitya Priahutama ◽  
Dendi Nur Ramadani ◽  
Jamilatul Munawarah ◽  
...  
Keyword(s):  
Plant Species ◽  
Basal Area ◽  
Monitoring And Evaluation ◽  
Plant Age ◽  
Tree Level ◽  
Soil Conditions ◽  
Vegetation Density ◽  
Vegetation Monitoring ◽  
East Kalimantan ◽  
Reclamation Area

Salah satu indikator yang digunakan untuk mengukur keberhasilan kegiatan reklamasi adalah dengan cara menghitung jumlah jenis vegetasi yang tumbuh pada areal reklamasi tersebut. Penelitian ini bertujuan untuk mengkaji variasi umur tanaman terhadap struktur dan komposisi vegetasi di areal reklamasi tambang (KRPT) PT Kideco Jaya Agung (PT KJA), Paser, Kalimantan Timur melalui kegiatan monitoring dan evaluasi vegetasi tahunan. Lokasi studi mencakup 13 (tiga belas) KRPT dengan umur tanaman 1-13 tahun. Nilai kerapatan vegetasi tertinggi pada masing-masing kategori adalah 1.125 individu/ha (KRPT umur 12 tahun) untuk tingkat pohon, 650 individu/ha (KRPT umur 10 tahun) untuk tingkat pancang dan 525 individu/ha (KRPT umur 8 tahun) untuk tingkat semai. Hasil penelitian ini juga menunjukkan bahwa terdapat 51 jenis vegetasi yang berasal dari 22 famili tanaman ditemukan pada areal konsesi PT KJA site Roto Samurangau. Dimana 32 diantaranya merupakan jenis tanaman yang tumbuh secara alami, sedangkan 19 jenis vegetasi lainnya merupakan jenis tanaman pokok. Berdasarkan variasi nilai kuantitatif pada masing-masing lokasi yang diamati, tidak tampak bahwa semakin tua umur tanaman, maka semakin tinggi pula nilai kerapatan vegetasi, basal area, dan kehadiran jenisnya. Namun, meskipun secara umum menurun, keragaman jenis pohon pada tanaman reklamasi yang lebih tua cenderung lebih beragam. Hal tersebut dikarenakan berbedanya situasi dan kondisi masing-masing KRPT yang diamati, seperti perbedaan kondisi tanah, jenis tanaman, dan jarak lokasi studi dengan hutan alam. Berdasarkan hasil identifikasi dan inventarisasi yang dilakukan pada penelitian ini diketahui bahwa KRPT dengan umur tanam 12 tahun memiliki komposisi vegetasi yang paling beragam, dimana dari 19 jenis vegetasi, 14 diantaranya merupakan jenis tanaman yang tumbuh secara alami. ABSTRACTThe one indicator used to measure the reclamation succession activities is by calculating the number of vegetation species that grow in reclamation area. This study aimed to determined the variations in plant age on the vegetation structure and composition in the mine reclamation area (KRPT) of PT Kideco Jaya Agung (PT KJA), Paser, East Kalimantan through annual vegetation monitoring and evaluation activities. The study sites cover 13 (thirteen) KRPTs with a plant age of 1-13 years. The highest vegetation density values in each category were 1,125 individuals/ha (12 years old KRPT) for the tree level, 650 individuals/ha (10 years old KRPT) for the sapling level and 525 individuals/ha (8 years old KRPT) for the seedling level. Present study also showed that there were 51 species of vegetation from 22 plant families found in the concession area of PT KJA, 32 are naturally species while others 19 species are main vegetation. Based on the variation of quantitative values at each location observed, it was not appeared that the older plant age affected to the higher value of vegetation density, basal area, and species presence. However, although it was generally declined, tree species diversity in older reclaimed plants tended to be more diverse. This is probably due to the different situations and conditions of each observed KRPT, such as differences in soil conditions, plant species, and the distance between study site and natural forest. The result of plant species identification and inventory showed that KRPT with a planting age of 12 years had the most diverse vegetation composition, where from 19 species there are 14 species of them grown naturally 

Diversity and composition of plants, butterflies and odonates in an Imperata cylindrica grassland landscape in East Kalimantan, Indonesia

2016 ◽  
Vol 32 (6) ◽  
pp. 555-560 ◽  
Author(s):  
D.F.R. Cleary
Keyword(s):  
Invasive Species ◽  
Plant Species ◽  
Rain Forest ◽  
Habitat Structure ◽  
Basal Area ◽  
Bare Soil ◽  
Imperata Cylindrica ◽  
Plant Composition ◽  
East Kalimantan ◽  
Herbaceous Dicots

Abstract:In Indonesia and elsewhere, Imperata cylindrica grassland now covers millions of hectares of land previously covered by rain forest. In the present study, shrubs, trees and climbers were recorded in sixteen 10 × 20-m plots and herb cover (ferns, grasses and herbaceous dicots) estimated in nested 2 × 2-m subplots. Butterflies and odonates were netted along 300-m transects. All plots and transects were randomly allocated to a 450 ha, I. cylindrica-dominated landscape. A total of 43 shrub, tree and climber, 16 herb, 67 butterfly and 30 odonate species were recorded. Shrubs, trees and climbers were present throughout the study area, but basal area was very low and mainly consisted of invasive species. Imperata cylindrica covered an estimated 65% of the area with other plant species or bare soil covering the remainder. Butterfly and odonate communities mainly consisted of species with large geographic distributions, but some recorded species had more limited distributions. The latter were, however, species known to associate with perturbed forest environments. Variation in the composition of butterflies and odonates was also related to variation in habitat structure (e.g. altitude and slope) and plant composition. Plant composition in particular appeared to structure both butterfly and odonate communities.

scholarly journals Rehabilitation of indigenous browse plant species following exclosure established on communal grazing lands in South Tigray, Ethiopia, and implication for conservation

2019 ◽  
Vol 8 (1) ◽  
Author(s):  
Tesfay Atsbha ◽  
Solomon Wayu ◽  
Nguse Gebretsadkan ◽  
Tesfay Gebremariam ◽  
Tsgehiwet Giday
Keyword(s):  
Population Structure ◽  
Species Diversity ◽  
Plant Species ◽  
Diversity Index ◽  
Basal Area ◽  
Monitoring And Evaluation ◽  
Parallel Line ◽  
Leaf Biomass ◽  
Positive Effects ◽  
Grazing Lands

Abstract Background Despite the wide use of indigenous browse plant species, there is almost no information on the rehabilitation of indigenous browse species following area exclosure (AE) established on communal grazing lands (CGL) in Southern Tigray. The objectives of this study were to assess the rehabilitation of browse plant species following AE establishment on CGL. A total of 61 and 59 plots of 10 × 10 m2 size were laid down at 50-m intervals along parallel line transects at AE and GCL, respectively. Data collected on vegetation attributes were subjected to analysis of t test (unequal variances) using R-software. Results The Shannon diversity index of the browse plant species was 1.25 and 0.81 in AE and CGL, respectively (P < 0.001). The overall population structure of browse plant species in the AE shows a reverse J-shaped population curve and “good” regeneration status, which reveals that the future communities may be sustained. Leaf biomass and basal area of browse plant species were significantly higher in the AE than in CGL (P < 0.001). After exclusion of grazing, AE was found to have positive effects on diversity and aboveground biomass of browse plant species. Conclusions The study gives an understanding of the diversity, the pattern of population and regeneration of the browse plant species, which may help in the management and conservation of the species. Our results indicate that grazing exclusion is an effective management strategy to restore browse plant species. We concluded that the establishment of AE had a positive effect on the rehabilitation of browse plant species diversity and improved population structure and regeneration potentials of degraded grazing lands. Long-term monitoring and evaluation systems will be required to gain an informed understanding of the roles played by area exclosures in the rehabilitation and conservation of browse palnt species diversity.

scholarly journals Analysis of vegetation diversity at urban forest Balai Wilayah Sungai (BWS) II Medan

2021 ◽  
Vol 912 (1) ◽  
pp. 012058
Author(s):  
H Arinah ◽  
J Sutiawan
Keyword(s):  
Plant Species ◽  
Open Space ◽  
Urban Forest ◽  
Diversity Index ◽  
Urban Forests ◽  
Combination Method ◽  
Tree Level ◽  
Vegetation Density ◽  
Species Diversity Index ◽  
Vegetation Diversity

Abstract The urban forest is part of the public green open space (RTH) formed from tree vegetation that affects temperature and humidity and reduces wind speed to provide comfort for residents in the vicinity. One of the urban forests in Medan is the Balai Wilayah Sungai (BWS) II Medan. Therefore, vegetation density has an influence on temperature and which affects the quality of urban forests. This study aimed to identify the structure and composition of the BWS II Medan urban forest vegetation. The vegetation analysis method used in this study is a combination method between the path method and the plotline method. The vegetation data that has been obtained is then processed to obtain the Important Value Index (IVI) and the Plant Species Diversity Index (H’). The results showed that the woody plants found in the urban forest of BWS II Medan were 20 species with the composition of seedlings of four species (26 individuals), saplings of twelve species (49 individuals), poles of eleven species (39 individuals) and trees of ten species (141 individuals). The species that dominates at the tree level is Trembesi (Samanea saman), with an IVI value of 118.16%. Meanwhile, the dominant plant species at the seedling, sapling, and pole levels were Mahoni (Swietenia mahagoni), with IVI values of 78.67%, 55.73%, and 103.62, respectively. Therefore, the level of diversity in the BWS II Medan Urban Forest for saplings is classified as moderate, while seedlings, poles, and trees are classified as low.

scholarly journals Effects of Plant Age and Root Damage on Internalization of Shiga Toxin-Producing Escherichia coli in Leafy Vegetables and Herbs

Horticulturae ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 68
Author(s):  
Yi-Ju Wang ◽  
Amanda J. Deering ◽  
Hye-Ji Kim
Keyword(s):  
Escherichia Coli ◽  
Plant Species ◽  
Shiga Toxin ◽  
Production Systems ◽  
Plant Age ◽  
Leafy Vegetables ◽  
Root Damage ◽  
Hygiene Practices ◽  
Hydroponic Systems ◽  
Stx1 Gene

Our previous study reported that fresh produce grown in aquaponic and hydroponic systems can pose potential food safety hazards due to an accidental introduction of contaminated fish and cross-contamination between the systems. In this study, we examined the effects of plant species and age on the likelihood and level of internalization of Shiga toxin-producing Escherichia coli (STEC) in aquaponic and hydroponic systems. Four plant species, basil (Ocimum basilicum L. cv. Genovese), cilantro (Coriandrum Sativum L.), lettuce (Lactuca sativa cv. Cherokee), and kale (Brassica oleracea var. sabellica), received root damage treatment as seedlings before transplanting or mature plants at three weeks after transplanting by cutting off 1-cm tips of one-third of the roots. Enrichments and selective media were used for the isolation, and presumptive positive colonies were confirmed by PCR for the presence of stx1 gene in plant tissues, recirculating water, and fish feces collected at four weeks after transplanting. In hydroponic systems, STEC was found neither in the solution nor in the roots and leaves of all four plant species, possibly through improved sanitation and hygiene practices. However, consistent with our previous findings, STEC was found in the water, on the plant roots, and in the fish feces in aquaponic systems, even after thorough sanitation prior to the study. Regardless of plant age, STEC was internalized in the roots of all plant species when the roots were damaged, but there was no difference in the degree of internalization with STEC among plant species. STEC was present in the leaves only when seedlings received root damage treatment and were grown to maturity, indicating that root damage allows STEC to internalize in the roots within a week, but a longer period is required for STEC to internalize into the leaves. We concluded that root damage on seedlings can cause the internalization of E. coli O157:H7 in the edible parts of leafy vegetables and herbs in soilless production systems.

scholarly journals Altitudinally coordinated pattern of plant community structure in the Shivapuri National Park, Nepal

1970 ◽  
Vol 18 (1) ◽  
pp. 11-17 ◽  
Author(s):  
Shalik Ram Sigdel
Keyword(s):  
Community Structure ◽  
Species Diversity ◽  
Plant Species ◽  
Plant Community ◽  
National Park ◽  
Climatic Factors ◽  
Flower Colour ◽  
Basal Area ◽  
Plant Community Structure ◽  
Closed Canopy

Study on plant community structure was undertaken in different altitudinal ranges of Shivapuri National Park. The general objective of this study is to analyse different plant community structure in Shivapuri National Park with regards to altitudinal variation. The forest was divided into three distinct altitudinal ranges on the basis of dominancy. In each altitudinal range standard quadrats method was applied for vegetation analysis. The highest number of species was found in site II. All the ecological parameters of the plant species were higher in site II except Basal Area of tree that was highest in site III. The pattern of distribution of plant species was not uniform according to altitude. At higher elevation, the forest was mature with almost closed canopy and trees were large; so the tree density was low. Species richness was highest in site II. Species diversity among tree and shrub species was higher in site I. But for herb species diversity was higher in site II for both seasons. Such type of variations may be due to nature of soil i.e. acidity, nutrient availability and other micro-climatic factors. The most noteworthy thing was that variation in flower colour of Rhododendron arboreum i.e. deep scarlet at low altitude, but it gradually changed into pinkish white as altitude increased. Key words: Altitude, Density, Plant community, Species diversity doi: 10.3126/banko.v18i1.2161 Banko Janakari, Vol. 18, No. 1, 11-17

scholarly journals The possibility of reclamation criteria success in Indonesia: soil condition, vegetation structure and species composition

2021 ◽  
Vol 9 (1) ◽  
pp. 3201-3210
Author(s):  
Tedi Yunanto ◽  
Farisatul Amanah ◽  
Nabila Putri Wisnu
Keyword(s):  
Species Composition ◽  
Vegetation Structure ◽  
Diversity Index ◽  
Basal Area ◽  
Mineral Resources ◽  
Soil Condition ◽  
Mine Reclamation ◽  
Soil Conditions ◽  
Standard Interval ◽  
Chemical Conditions

There are two regulations for mine reclamation success in the forestry area in Indonesia, namely Minister of Forestry Regulation No. P.60/Menhut-II/2009 and Minister of Energy and Mineral Resources Decree No. 1827.K/30/MEM/2018. Both regulations rule vegetation and soil success. This study aims to analyse criteria parameters from both regulations in the mine reclamation and compare them to the surrounding secondary natural forest (SNF). This study was conducted in 6 six types of mine reclamation stand structures: 1, 4, 6, 9, 11-year-old plantation and SNF using 1 hectare of the circular plot each (total 6 ha). Soil samples were collected from 40 cm depth to analyse physical, biological and chemical conditions. Mine reclamation areas had almost similar physical, biological and chemical soil conditions with SNF. Nevertheless, due to the potential acid-forming (PAF) material from overburden, the 1-year-old plantation had pH = 3.23-3.27. The highest diversity index and the number of species and families in all reclamation areas were H’ = 1.82 (11-year-old); 14 species (9-year-old); and 11 families (9-year-old), comparing with SNF were H’ = 3.48; 67 species, and 31 families. Conversely, vegetation structure parameters in mine reclamation areas were higher than SNF (diameter at height breast (DBH; 1.3 m) = 28.42 cm; tree density = 469/ha; basal area = 35.04 m2/ha; and total height = 16.85 m). Compared to the SNF, vegetation structure and soil conditions are mostly possible for mine reclamation success. Still, species composition needs to be considered further as a standard interval to meet the criteria.

scholarly journals Analysis of trophic structure of forest flora in the Oril River valley

2017 ◽  
Vol 18 (3-4) ◽  
pp. 37-50
Author(s):  
B. A. Baranovsky ◽  
I. A. Ivanko ◽  
A. V. Kotovych ◽  
L. A. Karmyzova ◽  
N. O. Roschina
Keyword(s):  
Plant Species ◽  
Forest Ecosystems ◽  
Black Locust ◽  
Vascular Plant ◽  
River Valley ◽  
Forest Vegetation ◽  
Current Status ◽  
Soil Conditions ◽  
Salix Alba ◽  
Common Oak

Biodiversity is important for maintaining of forest ecosystems functioning and in their resistance to anthropo-climatic challenges. Assessment of species diversity and species ecomorphic analysis is the basis for determining their current status, rational use and protection. At the end of the nineteenth century, Belgard A. L. (1950) in his system of ectomorphs using terminology presented by Dekandol (1956) and Warming (1903), had proposed a «trophomorph» category that reflected species relation to soil richness. Analysis of trophomorphs reflects diversity of soil conditions in different biotopes within forest ecosystems. The article gives an analysis on vascular plant trophomorphs distribution in various forest biotopes of Oril river valley. Flora and vegetation surveys in forests of Oril river valley were carried out by A. L. Belgard and T. F. Kirichenko since the 30s of the 20th century. The latest data on forest vegetation state within the Oril river valley were given in the works of Y. Gamulja and V. Manyuk. Generalized bioecological analysis of flora Oril river valley was represented in the monograph of B. Baranovsky, V. Maniuk, I. Ivanko, L. Karmyzova «Flora analysis of the Oril National Park». As is known, edaphic conditions of plant habitats in a first place are determined by soil fertility depending on the plant nutrients availability. Soddy-forest soil on sandy terrace of Oril river valley has a relatively low content of humus and total nitrogen: 2 and 0.04 %. Under these conditions, pine phytocenoses were ocсurred that represented exclusively by artificial plantings. Soils in the depressed area of Oril river floodplain are much richer in humus and nitrogen content (10 and 0.37 %). Here, arboreal and shrubby vegetation is represented by communities with common oak. On the second terrace of Oril river valley, forest vegetation is represented by artificial pine forests. Microcenoses with black locust, amorpha and willow occurred on elevated areas of sandy terrace (arena). In the depressed area of the arena, microcenoses with aspen and birch, aspen, Tatarian maple, amorpha, black locust were occurred additionally to pine communities. In the Oril floodplain, native arboreal and shrubby vegetation is represented mainly by communities with common oak. In depressed areas of the floodplain, microcenoses with white poplar, black poplar, aspen, Tatarian maple, amorpha, willow (Salix alba, S. fragilis), osiery (Salix cinerea, S. triandra),  and alder are fragmentarily occurred. In conditions of elevated areas of the floodplain, 196 vascular plants species were found, and 105 species in depressed areas. On the second terrace, 38 plant species grow on the elevated areas, and 54 species on the depressed ones. Flora includes 45 adventive plant species. In depressed floodplain areas, oligotrophs are represented by 7 species, mesotrophs by 126 species, megatrophs by 50 species, and in elevated areas: 7, 126 and 25 species, respectively. In depressed areas of arena oligotrophs are represented by 4 species, mesotrophs by 29 species, and megatrophs by 11, elevated areas: 7 and 21 species respectively, and megatrophs were absent.

scholarly journals Short Communication: Identification and evaluation of bioactivity in forest plants used for medicinal purposes by the Kutai community of East Kalimantan, Indonesia

2018 ◽  
Vol 19 (1) ◽  
pp. 253-259 ◽  
Author(s):  
ABDUL RASYID ZARTA ◽  
WIWIN SUWINARTI ◽  
FARIDA ARIYANI ◽  
IRAWAN WIJAYA KUSUMA ◽  
ENOS TANGKE ARUNG
Keyword(s):  
Antioxidant Activity ◽  
Secondary Metabolites ◽  
Plant Species ◽  
Short Communication ◽  
Biological Effects ◽  
Bacterial Activity ◽  
Plant Materials ◽  
Vitro Assay ◽  
East Kalimantan ◽  
Forest Plants

Zarta AR, Ariyani F, Suwinarti W, Kusuma IW, Arung ET. 2018. Short Communication: Identification and evaluation of bioactivity in forest plants used for medicinal purposes by the Kutai community of East Kalimantan, Indonesia. Biodiversitas 19: 253- 259. The Indonesian forest is one of the most species-rich ecosystems in the world. Within such forests are plant species with secondary metabolites that have novel molecular structure and diverse biological activity with excellent potential to be used medicinally in prevention and cure of various diseases afflicting humans. Plant materials often contain various forms of antioxidants. Phenolic compounds found in plants have many biological effects. Flavonoids and other phenolics play a protective role against metabolic damage caused by disease and environmental stressors. The communities of Kutai Kartanegara in East Kalimantan Indonesia are representative of many traditional peoples who have evolved ways of treating human ailment and disease by use of specific plants sourced from their forests. The purpose of the research described in this paper was to identify significant medicinal plant species used by the Kutai ethnic community and to prepare extracts from these plants, mainly from the leaves, and to evaluate the extracts for bioactivity; namely by general identification of secondary metabolites, and by estimation of their antioxidant activity, toxicity, and antibacterial activity. Samples of ten plant species, used medicinally by the Kutai community, were extracted using ethanol solvent. Assay of antioxidant activity was carried out by the spectrophotometric method using DPPH (1,1-diphenyl-2-picrylhydrazyl radical) as the control. The degree of toxicity of the extracts was determined by the BSLT (Brine Shrimp Lethality Test) while anti-bacterial activity was evaluated using an in vitro assay of growth inhibition of cultures of the bacterium Escherichia coli. The result showed that nine of the plant species had strong antioxidant activity (IC50); extracts of two of the species were very toxic, while one other was toxic; and at least eight of the species had extracts that exhibited anti-bacterial activity. The phytochemical compounds identified in several of the ten species included flavonoids, tannins, saponins, steroids, triterpenoids, and alkaloids.

Sign in / Sign up

Export Citation Format

Share Document