scholarly journals Environmental Factors Affecting the Abundance and Presence of Tree Species in a Tropical Lowland Limestone and Non-limestone Forest in Ben En National Park, Vietnam

2015 ◽  
Vol 31 (3) ◽  
pp. 177-191 ◽  
Author(s):  
Thinh Van Nguyen ◽  
Ralph Mitlohner ◽  
Nguyen Van Bich ◽  
Tran Van Do
Keyword(s):  
Environmental Factors ◽  
Tree Species ◽  
National Park ◽  
Factors Affecting ◽  
Tropical Lowland

scholarly journals Evaluating tree growth factors into species-specific functional soil maps for improved agroforestry system efficiency

2021 ◽  
Author(s):  
Zhuo-Dong Jiang ◽  
Phillip R. Owens ◽  
Amanda J. Ashworth ◽  
Bryan A. Fuentes ◽  
Andrew L. Thomas ◽  
...  
Keyword(s):  
Growth Rate ◽  
Environmental Factors ◽  
Tree Growth ◽  
Tree Species ◽  
Agroforestry Systems ◽  
Tree Size ◽  
Soil Maps ◽  
Factors Affecting ◽  
Terrain Attributes ◽  
Functional Units

AbstractAgroforestry systems play an important role in sustainable agroecosystems. However, accurately and adequately quantifying the relationships between environmental factors and tree growth in these systems are still lacking. Objectives of this study were to quantify environmental factors affecting growth of four tree species and to develop functional soil maps (FSM) for each species in an agroforestry site. The diameter at breast height, absolute growth rate (AGR), and neighborhood competition index of 259 trees from four species (northern red oak [Quercus rubra], pecan [Carya illinoinensis], cottonwood [Populus deltoides], and sycamore [Platanus occidentalis]) were determined. A total of 51 topsoil samples were collected and analyzed, and 12 terrain attributes were derived from the digital elevation model. The relationships between AGR, soil, topography, and tree size were analyzed using Spearman correlation. Based on correlation analysis, FSM for each species were generated using the k-means cluster method by overlaying correlated soil and terrain attribute maps. Results showed tree size and terrain attributes were driving factors affecting tree growth rate relative to soil properties. The spatial variations in AGR among functional units were statistically compared within tree species and the areas with larger AGR were identified by the FSM. This study demonstrated that FSM could delineate areas with different AGR for the oak, cottonwood, and sycamore trees. The AGR of pecan trees did not vary among functional units. The generated FSM may allow land managers to more precisely establish and manage agroforestry systems.

scholarly journals Plants Flowering and Fruiting Behaviour in Alas Purwo National Park, Banyuwangi, East Java

2020 ◽  
Vol 5 (2) ◽  
pp. 132
Author(s):  
Dewi Ayu Lestari ◽  
Agung Sri Darmayanti
Keyword(s):  
Environmental Factors ◽  
Light Intensity ◽  
National Park ◽  
Forest Type ◽  
Conservation Areas ◽  
Lowland Forest ◽  
Conservation Area ◽  
Factors Affecting ◽  
Species Dominance ◽  
Number Species

Alas Purwo National Park (APNP) is a conservation area with lowland forest type. The adaptation of plants conserved is strongly influenced by environmental factors and the behaviour of flowering and fruiting. The aims of this research were to find the number, species, dominance, and abundance of flowering and fruiting plants, comparison of flowering and fruiting species, and environmental factors affecting the flowering and fruiting time in APNP observation tracks. This study used purposive random sampling in each observation track where flowering and fruiting plants were found. Environmental factors (temperature, humidity, light intensity, soil pH, elevation, and coordinates) in each observation track were measured. Data analysis was conducted using Microsoft Excel and PAST 4.0. statistic program. The behaviour of flowering and fruiting plants species in APNP was unique. There were 90 species of flowering and fruiting plants in APNP from 45 families. Most species often found flowering and fruiting were Orophea enneandra, Polyalthia littoralis and Leea angulata which were scattered in Moto Lele, Patirtan Mas, and Sadengan Savanna. Fruiting plants species were more often found than flowering ones. Temperature and light intensity became the two most affecting environmental factors on flowering and fruiting plants behaviour. The study of flowering and fruiting behaviour is very important for genetic resources conservation and conservation areas management.

WISATA BAHARI PADA ZONA PEMANFAATAN TAMAN NASIONAL MANUSELA: POTENSI DAN FAKTOR PENGARUH PENGEMBANGAN

2018 ◽  
Vol 2 (2) ◽  
pp. 66-73
Author(s):  
Ivonne R. G. Kaya ◽  
Fildo De Lima
Keyword(s):  
National Park ◽  
Point Of View ◽  
Structured Interviews ◽  
Factors Affecting ◽  
Tourist Attractions ◽  
Income Sources ◽  
Economic Progress ◽  
Key Driver ◽  
Tourism Attractions ◽  
Depth Interviews

Tourism has become one of the major players in ‎international commerce and represents one of the main income ‎sources for many developing countries at the same time. These dynamics have turned tourism into a key driver for socio-‎economic progress.‎ This article described the potential of tourism attraction and factor affecting the development of marine tourism area in the utilization zone of Manusela National Park. Semi-structured interviews, in-depth interviews and participant observations were conducted with respondent (n=110) in Bellarizky, Air Belanda, Ora Beach and Lizar Bahari resort. The potential of tourist attractions in the utilization zone of Manusela National Park is as a snorkeling, diving and point of view. Factors affecting the development are service, transportation, supporting facilities and tourism attractions.

Environmental factors affecting reproducibility of bioremediation field assays in Antarctica

2020 ◽  
Vol 169 ◽  
pp. 102915 ◽  
Author(s):  
L.M. Martínez Álvarez ◽  
L.A.M. Ruberto ◽  
J.M. Gurevich ◽  
W.P. Mac Cormack
Keyword(s):  
Environmental Factors ◽  
Factors Affecting

scholarly journals The association among dominant tree species in mount Halimun Salak National Park

2021 ◽  
Vol 743 (1) ◽  
pp. 012014
Author(s):  
Denny ◽  
T Setyawati ◽  
T Kalima ◽  
M Wardani ◽  
Zuraida ◽  
...  
Keyword(s):  
Tree Species ◽  
National Park

scholarly journals Spatiotemporal Heterogeneity of Ecological Policy Compromises Human Well-Being and Giant Panda Habitat Conservation in Giant Panda National Park

2021 ◽  
Vol 13 (9) ◽  
pp. 5013
Author(s):  
Dan Zhu ◽  
Degang Yang
Keyword(s):  
Environmental Factors ◽  
Socioeconomic Factors ◽  
National Park ◽  
Structural Equation ◽  
Giant Panda ◽  
Conservation Status ◽  
Well Being ◽  
Habitat Conservation ◽  
Spatiotemporal Heterogeneity ◽  
Panda Habitat

Identifying how policy, socioeconomic factors, and environmental factors influence changes in human well-being (HWB) and conservation efficiency is important for ecological management and sustainable development, especially in the Giant Panda National Park (GPNP). In this study, we systematically analyzed the differences in the conservation status of the giant panda habitat and changes in HWB over 15 years in the GPNP, which includes six mountain sites, Minshan (MS), Qionglai (QLS), Xiaoxiangling (XXL), Liangshan (LS), Qinling (QL), and Daxiangling (DXL). Redundancy analyses were used to determine the factors contributing (policy, socioeconomic factors, and environmental factors) to HWB and giant panda habitat conservation (HC). In addition, using a structural equation model (SEM), we investigated the relationship between the aforementioned three factors and their direct and indirect effects on HWB and HC. The results indicated that there was spatiotemporal heterogeneity of HWB and HC in our study area. There was an increasing number of plant species as well as an increased number of giant panda in GPNP. Generally, HWB in 2015 showed an increasing trend compared with that in 2000. Socioeconomic factors (23.6%) have the biggest influence on HWB and HC, followed by policy (23.2%) and environmental factors (19.4%). Conservation policy had a significantly positive influence on HWB (0.52), while it negatively influenced HC (−0.15). Socioeconomic factors significantly negatively influenced HWB (−0.38). The formulation and implementation of policies to promote economic development will contribute to the protection of giant pandas and their habitat. Our results provide insight on the conservation status of the giant panda habitat, HWB, and factors influencing them in different mountain sites in the GPNP, as well as having implications for the future management of the GPNP.

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