scholarly journals Spatial distribution pattern and diameter structure of Protium Burm. f. in Iratapuru river sustainable development reserve, Amapá, Brazil

2018 ◽  
Vol 40 (1) ◽  
pp. 35854
Author(s):  
Luciedi De Cassia Leoncio Tostes ◽  
Marcelo De Jesus Veiga Carim ◽  
José Francisco de Carvalho Gonçalves ◽  
Admilson Moreira Torres ◽  
José Renan da Silva Guimarães
Keyword(s):  
Sustainable Development ◽  
Spatial Distribution ◽  
Distribution Pattern ◽  
Vertical Structure ◽  
Dynamic Balance ◽  
Spatial Distribution Pattern ◽  
Medium Size ◽  
The Sustainable Development ◽  
Diameter Structure ◽  
Area Of Study

 The present work aims to determine the spatial distribution pattern of Protium Burm. f and the diametric structure of these species in a dense tropical submontane rainforest along the Sustainable Development Reserve (SDR) of the Iratapuru river. The area of study was divided into three plateau compartments called Mane Preto Sierra, Banco Grande Sierra and Alaska Sierra. In each plateau compartment it was settled a single area transect with 1,000 x 20 m, where DAP ≥ 10 cm of the entire Protium population within the transects was measured. The data was processed in the specific software Mata Nativa 2. There were inventoried Protium tenuifolium, Protium altsoni, Protium polybotryum subsp. blackii and Protium paniculatum var. riedelianum. Most individuals concentrated in smaller diametric classes, decreasing progressively to a lesser extent in larger classes. It can be concluded that the population has medium size and its vertical structure is characterized by the presence of three strata, however, its phytocenoses is defined by two clear constants: the first groups individuals of up to 15 m of height and forms the uniform and dominant stratum; the second is composed by emerging up to 35 m high and whose diameter structure shows a population in dynamic balance. 

scholarly journals Indeks Pembangunan Berkelanjutan Lokal dan Sebaran Spasialnya di Kabupaten Mandailing Natal, Provinsi Sumatera Utara

2021 ◽  
Vol 5 (3) ◽  
pp. 174-186
Author(s):  
Elvina Nora Lubis ◽  
Andrea Emma Pravitasari ◽  
Dwi Putro Tejo Baskoro
Keyword(s):  
Sustainable Development ◽  
Spatial Distribution ◽  
Distribution Pattern ◽  
Local Level ◽  
Economic Value ◽  
Spatial Distribution Pattern ◽  
The Sustainable Development ◽  
Development Index ◽  
Index Measurement ◽  
Cluster Type

The concept of sustainable development is very important to increase our quality of life. Measurement of development based on specific indicators is one of the approaches to describe sustainable development. At the local level, measuring sustainable development using specific indicators is still rare. Since each location has their own unique characteristics, measuring sustainability at the regional level could not always be applied locally. The availability of data at the village level strongly encourages the local measurement of sustainable development index. The economic, social, and environmental dimensions of Mandailing Natal Regency's development are still constrained. Using 21 variables that can reflect economic, social, and environmental aspects, this study aims to measure the sustainable development index at the local level. The Local Sustainable Development Index will be generated by analyzing these variables using the Factor Analysis (FA) method and Local Indicator of Spatial Autocorrelation (LISA) analysis. This index measurement is useful in considering the direction of location-based (spatial) development for decision makers at the local level and describe development sustainability. In general, IPBL economic value was in the medium category in 2011, and several villages in the low category were able to enhance their economic development sustainability in 2018. In the northwest, IPBL environment cluster type High-high (HH). In 2018, the percentage spatial distribution pattern of villages with the Low-low (LL) cluster type of IPBL economic and IPBL environment decreased. However, as can be seen from the spatial distribution pattern of IPBL social with cluster type LL, the percentage increased in 2018.

scholarly journals POPULATION STRUCTURE AND SPATIAL DISTRIBUTION OF Bauhinia cheilantha (Bong.) Steud. IN TWO FRAGMENTS AT DIFFERENT REGENERATION STAGES IN THE CAATINGA, IN SERGIPE, BRAZIL

2015 ◽  
Vol 39 (3) ◽  
pp. 431-437 ◽  
Author(s):  
Ana Cecília da Cruz Silva ◽  
Diogo Gallo de Oliveira
Keyword(s):  
Population Structure ◽  
Spatial Distribution ◽  
Distribution Pattern ◽  
Spatial Distribution Pattern ◽  
Breast Height ◽  
Diameter Structure ◽  
Student’S T ◽  
Two Populations ◽  
Vegetation Regeneration ◽  
Student’S T Test

ABSTRACTThis study aimed to analyze the vertical and diameter structure and the spatial distribution pattern of Bauhinia cheilantha in two Caatinga fragments in Sergipe, Brazil, at different regeneration stages. Thirty plots were demarcated in area I (Canindé de São Francisco and Poço Redondo), which has vegetation regeneration, and 25 plots in area II (Porto da Folha) with preserved vegetation, both having 400 m2. All B. cheilanthaindividuals had their height and circumference (circumference at breast height > 6 cm) measured. Possible differences in height and diameter at breast height were tested in the two populations by using Student’s T-test. The distribution pattern of species was calculated through Payandeh’s index. We sampled 154 B. cheilantha individuals, equivalent to 33.3% of the plots in area I and in 1,027 individuals in area II, totaling 100% frequency. Height and the diameter of the two populations were statistically different, where AI achieved all values lower than AII. The spatial distribution pattern of B. cheilantha found in both areas was aggregate, with values of 11.85 and 9.00, respectively. Thus, it became clear that the population in AII is at a more advanced successional status than AI, due to its longer conservation time.

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