scholarly journals Analisis Vegetasi di Kawasan Petilasan Mbah Maridjan Taman Nasonal Gunung Merapi

2020 ◽  
Vol 4 (1) ◽  
pp. 55-63
Author(s):  
Amri Shabirin ◽  
Yuliantika Puteri ◽  
Hendrianis Syafira ◽  
Tia Mayasari ◽  
Mufti Nurkhasanah
Keyword(s):  
Invasive Plants ◽  
Field Observation ◽  
Random Sampling ◽  
Stand Structure ◽  
Habitat Diversity ◽  
Tamarindus Indica ◽  
Vegetation Analysis ◽  
Observation Area ◽  
Important Value Index

This research aims to determine the diversity of habitus and species that dominate in the region of Kinahrejo, Umbulharjo, Cangkringan, Sleman. The method used is square sampling by making a 7x7 meters square plot of 2 plots so that an area of  ​​98 m2 is obtained. Vegetation analysis using the method of observation, and monitoring (field observation) directly with random sampling and using the principle of representative. Analysis  the level of  habitat diversity using the Shannon-wienner Index and determination of species that dominate using the calculation of the Important Value Index (INP). A total of 34 species consisting of mosses, shrubs, herbs, and stand-structure are occupy the observation area. The results of the research and analysis showed that Tamarindus indica, which included stand-structure habitus had the highest INP of 139.54% and the lowest INP was found in shrubs habitus. The highest Shannon-wienner index in shrubs habitus is 1.220928 and the lowest is in stand-structure habitus. It can be concluded, stand-structure habitus dominates the area while, the highest diversity is found in shurbs habitus. The eruption in 2010 caused damage to ecosystems and invasive plants to become dominant such as Acacia decurrens and shrubs.

scholarly journals KEANEKARAGAMAN ANGGREK DI CAGAR ALAM DAN TAMAN WISATA ALAM TELAGA WARNA, PUNCAK, BOGOR

EKOLOGIA ◽  
2020 ◽  
Vol 18 (2) ◽  
pp. 83-93
Author(s):  
Siti Suryani Tahier ◽  
Tri Saptari Haryani ◽  
Sri Wiedarti
Keyword(s):  
Data Collection ◽  
Sea Level ◽  
Field Observation ◽  
Nature Reserve ◽  
Orchid Species ◽  
Research Site ◽  
Observation Area ◽  
Spread Pattern ◽  
Nature Park ◽  
Important Value Index

The existence of orchids is often threatened with extinction that can be caused by natural damage. In addition, the continuous harvesting of orchids from nature without considering its sustainability can threaten the extinction of orchids in a region. There is a need for knowledge about the diversity of orchids so that it can be the basis of conservation in a region specifically nature reserve and Nature Park Bogor. Research using transect methods and data collection conducted using field observation techniques. The observation area consists of three locations altitude: 1400, 1500 and 1600 m above sea level . There are 27 species of orchids consisting of 19 genera. From the calculation of important value index (INP), the dominating type is found at altitude 1400 and 1500 m above sea level is Ceratostylis crassifolia, While at height and 1600 m DPL is Liparis compressa. Index diversity of type in the research site with a height of 1400 m DPL is moderate and at an altitude of 1500 and 1600 m DPL is high. The spread index is known that the pattern of spreading orchid species in three research locations has a clumped group spread pattern.

scholarly journals Pola Distribusi Aboveground Biomass Kawasan Hutan Mangrove Peniti Kalimantan Barat

Life Science ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 1-9
Author(s):  
Rafdinal Rafdinal ◽  
Rizalinda Rizalinda ◽  
Sukal Minsas
Keyword(s):  
Distribution Pattern ◽  
Aboveground Biomass ◽  
Random Sampling ◽  
Analysis Data ◽  
Mangrove Ecosystem ◽  
Mangrove Forests ◽  
Vegetation Analysis ◽  
Conceptual Approach ◽  
West Kalimantan

This study aims to analyze the distribution pattern of aboveground biomass (AGB) in the mangrove ecosystem of West Kalimantan Safety. In addition, it also analyzes the differences in biomass and carbon stocks in the condition of mangrove forests. The study of the distribution pattern of AGB of mangrove forests was carried out between August and September 2018. Determination of the location of the study was based on a conceptual approach in the dimensions of spatial temporal that is using the Porposive Random Sampling method. Vegetation analysis was carried out by a single plot measuring 50 m x 50 m at each selected location. Based on vegetation analysis data it was found that the density of mangrove stands on the Peniti coast ranged from 38 to 185 ind /ha, with an average of 88.25 ± 66.15 ind./ Ha. The AGB of pinch mangrove forests ranged from 8.85 to 84.82 Mg / ha with the largest total AGB distributed in the stand diameter class of more than 80 cm.   Penelitian ini bertujuan untuk menganalisis pola distribusi aboveground biomass (AGB) pada ekosistem mangrove Peniti Kalimantan Barat. Selain itu juga untuk menganalisis perbedaan biomassa, dan cadangan karbon pada kondisi hutan mangrove. Kajian pola distribusi AGB hutan mangrove Peniti dilakukan antara bulan Agustus dan September 2018. Penentuan lokasi penelitian didasarkan pada pendekatan konseptual dalam dimensi spasio temporal yaitu menggunakan metode Porposive Random Sampling. Analisis vegetasi dilakukan dengan metode petak tunggal berukuran 50 m x 50 m pada setiap lokasi terpilih. Berdasarkan data analisis vegetasi didapatkan bahwa kerapatan tegakan mangrove di pesisir Peniti berkisar antara 38 sampai 185 ind/ha, dengan rata-rata 88,25±66,15 ind./ha. AGB tegakan hutan mangrove Peniti berkisar antara 8,85 sampai 84,82 Mg/ha dengan total AGB terbesar terdistribusi pada kelas diameter tegakan lebih dari 80 cm.

scholarly journals Vegetation Analysis of Invasive Plants in Batang Gadis National Park Resort 7 Sopotinjak

2021 ◽  
Vol 5 (1) ◽  
pp. 1-9
Author(s):  
Putri Diana ◽  
Husnarika Febriani ◽  
Melfa Aisyah Hutasuhut
Keyword(s):  
Invasive Plants ◽  
Plant Diversity ◽  
National Park ◽  
Invasive Plant ◽  
Diversity Index ◽  
Vegetation Analysis ◽  
Ageratum Conyzoides ◽  
Purposive Sampling ◽  
Melastoma Malabathricum ◽  
Important Value Index

Introduction: The purpose of this study was to determine the type and diversity of invasive plants in Batang Gadis National Park (BGNP). Materials and Methods: This study was conducted in Batang Gadis National Park Resort 7 Sopotinjak, Mandailing Natal from February until April 2021. This study using the quadratic method by making transects and each transect is divided into 8 plots. Laying plots by purposive sampling as many as 8 plots. Results: BGNP Resort 7 had the invasive plants consisted of 12 families, 20 species and 1287 individuals. The highest species was found in Melastoma malabathricum L (230) and the highest important value index was found in Strobilanthes reptans (35.82%), while the species with the lowest significance index was Ageratum conyzoides (3.40%). The invasive plant diversity index was categorized as moderate (H'= 2.43).

scholarly journals ANALISIS VEGETASI HUTAN LINDUNG GUNUNG TUMPA

EUGENIA ◽  
2011 ◽  
Vol 17 (3) ◽  
Author(s):  
Reynold P. Kainde ◽  
Semuel P. Ratag ◽  
Johny S. Tasirin ◽  
D. Faryanti
Keyword(s):  
Random Sampling ◽  
Simple Random Sampling ◽  
Tree Level ◽  
Species Trees ◽  
Vegetation Analysis ◽  
Protection Forest ◽  
Important Value Index

ABSTRACT   This research was carried out in the Mount of Tumpa Protection Forest from February to March 2003, aiming to asses Important Value (IV) Index.  Simple random sampling with plot was used to collect species data. The observation for collecting specie data was  number individual of each species, trees, poles diameter and species presence.  The data were analysed for density, relatif density, frequency, relatif frequency, dominancy, relatif dominancy and Important Values (IV) The results showed that at seedling level, Important Value of Tepu was the highest  (41,83%) and lowest was Calophyllum soulattri (10,03 %).  The highest Important Value at  the sapling level was Calamus sp (38,73%) and the lowest was Knema latericia (10,11%). The highest  Important Value at the pole level was Spathodea campanulata (74,01%) and the lowest was Dracontomelum mangiverum (10,05%).  The highest Important Value at tree level was Spathodea campanulata (88,86%) and the lowest was Calophyllum soulattri (10,22%). Keywords : Important Value Index, Vegetation Analysis

scholarly journals Land-Use Impact on Stand Structure and Fruit Yield of Tamarindus indica L. in the Drylands of Southeastern Ethiopia

Life ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 408
Author(s):  
Gizachew Zeleke ◽  
Tatek Dejene ◽  
Wubalem Tadesse ◽  
Pablo Martín-Pinto
Keyword(s):  
Land Use ◽  
Stand Structure ◽  
Fruit Production ◽  
Tree Density ◽  
Fruit Yield ◽  
Tamarindus Indica ◽  
Land Use Types ◽  
Significant Difference ◽  
Management Plans ◽  
Baseline Information

In this study, we evaluated stand status, dendrometric variables, and fruit production of Tamarind (Tamarindus indica L.) trees growing in bushland and farmland-use types in dryland areas of Ethiopia. The vegetation survey was conducted using the point-centered quarter method. The fruit yield of 54 trees was also evaluated. Tree density and fruit production in ha were estimated. There was a significant difference in Tamarind tree density between the two land-use types (p = 0.01). The mean fruit yield of farmland trees was significantly higher than that of bushland trees. However, Tamarind has unsustainable structure on farmlands. Differences in the dendrometric characteristics of trees were also observed between the two land-use types. Predictive models were selected for Tamarind fruit yield estimations in both land-use types. Although the majority of farmland trees produced <5000 fruit year−1, the selection of Tamarind germplasm in its natural ranges could improve production. Thus, the development of management plans to establish stands that have a more balanced diameter structure and thereby ensure continuity of the population and fruit yields is required in this area, particularly in the farmlands. This baseline information could assist elsewhere in areas that are facing similar challenges for the species due to land-use change.

scholarly journals Vegetation analysis and plant diversity in Pinus Jantho Forest (PJF) nature reserve, Aceh Besar

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
HILMINA ITAWAMERNI ◽  
SAIDA RASNOVI ◽  
ZUMAIDAR ZUMAIDAR
Keyword(s):  
Species Diversity ◽  
Plant Species ◽  
Nature Reserve ◽  
Diversity Index ◽  
Systematic Sampling ◽  
Vegetation Analysis ◽  
High Level ◽  
Piper Aduncum ◽  
Important Value Index ◽  
Pinus Merkusii

Pinus Jantho Forest (PJF) Nature Reserve has unique characteristics and distinctive ecosystem that plays an important role in the preservation of germplasm and the protection of natural resources. The sustainability of the PJF Nature Reserve is strongly determined by vegetation of its constituents. Therefore, an effort is needed to help its management properly, one of which is by knowing the diversity of plants that make up the community in PJF Nature Reserve. The purpose of this research is to analyze the composition and diversity of plant species in PJF Nature Reserve. Data collection and sampling were done using multiple square method. The plots were laid out by systematic sampling. PJF Nature Reserve composed of 111 species from 46 family. The seedling and understorey have the highest number individuals (1028 in total). Then there are 240 individuals at sapling level, 108 individuals at pole, and 72 individuals for tree.  The Euphorbiaceae family has the largest number of species (11 species). The highest Important Value Index (IVI) for seedlings and understorey, sapling and pole, and tree respectively were Chloranthus elatior (11.09%), Piper aduncum (21.90% and 19.32%), and Pinus merkusii (25.52%). The Diversity Index indicates a high level of plant species diversity (3.25-3.63).

scholarly journals Kontribusi Marketing Syariah dan Citra Lembaga Dalam Mempengaruhi Keputusan Nasabah Menabung

2020 ◽  
Vol 6 (1) ◽  
pp. 11
Author(s):  
Nur Anim Jauhariyah ◽  
Kiki Fitria ◽  
Mahmudah Mahmudah
Keyword(s):  
Survey Research ◽  
Random Sampling ◽  
Sampling Technique ◽  
Simple Random Sampling ◽  
Quantitative Approach ◽  
Institutional Image ◽  
The Public ◽  
Simultaneous Influence

The purpose of this study 1) Knowing the influence of sharia marketing (X1) on customer decisions (Y) saving; 2) Determine the magnitude of the influence of the image of the institution (X2) on the customer's decision (Y) to save; 3) Knowing the simultaneous influence between sharia marketing (X1) and institutional image (X2) on Customer Decision (Y) saving. In this study using a quantitative approach to the type of survey research. Determination of the research sample using simple random sampling technique with 30 respondents. Research conclusions 1) Sharia marketing Bank Syariah Mandiri KC Genteng Banyuwangi Regency is one of the factors that influence customers' decision to save. The better the marketing of sharia is carried out, the more interested the public will be in saving at Syariah Syariah Bank KC Genteng Banyuwangi Regency; 2) the image of the institution of Bank Syariah Mandiri KC Genteng Banyuwangi Regency is one of the factors that influence the interests of customers to save. The better the image in the minds of the public, the more interested people will be saving at the Syariah Mandiri Bank KC Genteng Banyuwangi Regency; 3) sharia marketing (X1) and institutional image (X2) are the dominant variables on customer decisions (Y) saving at Bank Syariah Mandiri KC Genteng Banyuwangi Regency.

scholarly journals PENGARUH FUNGSI PENGENDALIAN OLEH KEPALA SEKOLAH TERHADAP DISIPLIN SISWA

2012 ◽  
Vol 1 (1) ◽  
Author(s):  
Yovitha Yuliejantiningsih Program Pascasarjana MP Universitas Negeri Malang
Keyword(s):  
Data Analysis ◽  
Random Sampling ◽  
Student Behavior ◽  
Research Result ◽  
School Principal ◽  
Student Discipline ◽  
Sampling System ◽  
Behavior Monitoring ◽  
Effective Contribution

Abstract: This article explain the effect of controling function by school principal to student disciple. Controling function by school principal consist of determining regulation for student, monitoring of student behavior, and correction action. Data collection using questionair and the sample are students of 3th grade of Publict Senior High School in Mojokerto. The sampling system using proportional random sampling. Data analysis using desciptive analysis and regression. The?é?á research result shows that controling function by school principal is good and student discipline are hight. Controling function by school principal has significant effect to student discipline. The effective contribution of controling function by school principal to student discipline is 7,461 %. Further explation shows that there is no effect of determination of refulation for student to student discipline, there is no effect of behavior monitoring to student discipline, and there is a significant effect of correction action by school principal to student discipline. ?é?á Abstrak: Artikel ini menguraikan pengaruh fungsi pengendalian oleh kepala sekolah terhadap disiplin siswa. Fungsi pengendalian ini meliputi penetapan peraturan bagi siswa, monitoring perilaku siswa, dan tindakan korektif/perbaikan. Pengumpulan data menggunakan kuesioner dengan sampel penelitian siswa kelas 3 SMA Negeri di Kota Mojokerto. Penarikan sampel menggunakan teknik proporsional random sampling. Data yang diperoleh dianalisis dengan teknik analisis deskriptif dan analisis regresi. Hasil penelitian menunjukkan bahwa fungsi pengendalian oleh kepala sekolah adalah baik dan disiplin siswa sangat tinggi. Fungsi pengendalian oleh kepala sekolah memiliki pengaruh yang signifikan terhadap disiplin siswa. Sumbangan efektif fungsi pengendalian oleh kepala sekolah terhadap disiplin siswa sebesar 7,461%. Bila dijabarkan lebih lanjut, maka dapat diketahui bahwa tidak ada pengaruh dari penetapan peraturan terhadap disiplin siswa; tidak ada pengaruh dari monitoring perilaku oleh kepala sekolah terhadap disiplin siswa; dan ada pengaruh yang signifikan dari tindakan korektif/perbaikan yang dilakukan oleh kepala sekolah terhadap disiplin siswa. Key Words: student discipline, controling function

scholarly journals Karakteristik Kewirausahaan Petani Muda Skala Kecil Berorientasi Pasar

2020 ◽  
Vol 8 (2) ◽  
pp. 106
Author(s):  
Gema Wibawa Mukti ◽  
Rani Andriani Budi Kusumo ◽  
Yosini Deliana
Keyword(s):  
Rural Areas ◽  
Random Sampling ◽  
Sampling Method ◽  
Business Processes ◽  
Land Ownership ◽  
Small Scale ◽  
Managerial Skills ◽  
Entrepreneurial Characteristics ◽  
Object Of Study

This study aims to identify entrepreneurial characteristics possessed by young farmers. Young farmers who are the object of study are horticulture farmers in Kabupaten Bandung Barat. This study tries to explain the characteristics of farmers in terms of entrepreneurship. This study focuses on young farmers in Cisarua, Parongpong, and Lembang Subdistricts, with land ownership of no more than two hectares (small scale). The determination of the sample is done by a stratified random sampling method. The strata in this study are young farmers under the age of 40 and farming in the sub-sector of horticulture products in Kabupaten Bandung Barat. The next step is to determine the sample in the study as many as 120 farmers. Farmers who play a role as entrepreneurs are not only experts in the production process, but they have visionary results-oriented business managerial skills. The results of the study show that the majority of respondents have moderate (moderate) entrepreneurial characteristics. This is more due to the farming climate in rural areas which is still moderate, not oriented to professionalism and entrepreneurship. However, young farmers have a desire to develop, so that their business processes are different from those of farmers in general, where young farmers are starting to implement professional work methods in their gardens. The entrepreneurial approach has been seen in the way they do business, where they always want to be better, always look for the latest information, create innovations in the garden, apply management in their farming and take risks.

scholarly journals Kajian Hutan Kota Malabar terhadap Kenyamanan Termal

2020 ◽  
Vol 3 (1) ◽  
pp. 21
Author(s):  
Eduardo Hilario Bado Towary ◽  
Roedy Sulistyono ◽  
Sama’ Iradat Tito ◽  
Muh. Agus Ferdian
Keyword(s):  
Thermal Comfort ◽  
Thermal Condition ◽  
Open Space ◽  
Green Space ◽  
Tree Level ◽  
Vegetation Types ◽  
Vegetation Analysis ◽  
Humidity Index ◽  
Important Value Index ◽  
The City

<pre>Comfort is something that humans need without exception when in a Green Open Space (RTH). Thermal comfort is a thermal condition felt by humans that is influenced by the environment. The existence of green space such as the City Forest of Malabar needs to be measured about it which can define its feasibility. (1) To examine the effect of thermal comfort in the Malabar forest on the community. (2) Analyzing vegetation in the Malabar city forest related to comfort. The results obtained in this study are the Temperature humidity index (THI) of respondents in the Malabar city forest known to average values of 22.42. It can be categorized that the Malabar city forest has a comfortable condition because in the index range 21 to 24. The analysis of the vegetation analysis in the Malabar city forest is concluded for the predominant vegetation sapling level, ie the pole glodokan plant with an important value index of 6.69. Whereas the pole level that dominates is mahogany with an important value index of 6.66. As for the tree level, the dominant vegetation types are plants with an important value index of 127.91</pre>

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