scholarly journals MANGROVE FOREST CHANGE IN NUSA PENIDA MARINE PROTECTED AREA, BALI - INDONESIA USING LANDSAT SATELLITE IMAGERY

2019 ◽  
Vol 15 (2) ◽  
pp. 141 ◽  
Author(s):  
August Daulat ◽  
Widodo Setiyo Pranowo ◽  
Syahrial Nur Amri
Keyword(s):  
Satellite Imagery ◽  
Vegetation Cover ◽  
Protected Area ◽  
Mangrove Forest ◽  
Vegetation Index ◽  
Marine Protected Area ◽  
Mangrove Forests ◽  
Forest Change ◽  
Landsat Satellite ◽  
The Impact

Nusa Penida, Bali was designated as a Marine Protected Area (MPA) by the Klungkung Local Government in 2010 with support from the Ministry of Marine Affairs and Fisheries, Republic of Indonesia. Mangrove forests located in Nusa Lembongan Island inside the Nusa Penida MPA jurisdiction have decreased in biomass quality and vegetation cover. It’s over the last decades due to influences from natural phenomena and human activities, which obstruct mangrove growth. Study the mangrove forest changes related to the marine protected areas implementation are important to explain the impact of the regulation and its influence on future conservation management in the region. Mangrove forest in Nusa Penida MPA can be monitored using remote sensing technology, specifically Normalized Difference Vegetation Index (NDVI) from Landsat satellite imagery combined with visual and statistical analysis. The NDVI helps in identifying the health of vegetation cover in the region across three different time frames 2003, 2010, and 2017. The results showed that the NDVI decreased slightly between 2003 and 2010. It’s also increased significantly by 2017, where a mostly positive change occurred landwards and adverse change happened in the middle of the mangrove forest towards the sea.

Spatiotemporal Analysis of Vegetation Cover and Its Response to Terrain and Climate Factors in Duhok Governorate, Kurdistan Region, Iraq

2020 ◽  
Vol 54 (1A) ◽  
pp. 110-126
Author(s):  
Rebar Mzuri
Keyword(s):  
Vegetation Cover ◽  
Vegetation Index ◽  
Temporal Distribution ◽  
Spatiotemporal Analysis ◽  
Climate Data ◽  
Remarkable Change ◽  
Temperature And Precipitation ◽  
Landsat Satellite ◽  
The Impact ◽  
Precipitation And Temperature

The integration of remote sensing techniques and Geographic Information System has a wide use to quantify the spatial and temporal distribution of vegetation cover. Over the last decade, a remarkable change was noticed in both climate and vegetation cover in Duhok. The Modified Soil Adjusted Vegetation Index (MSAVI2) was extracted from Landsat satellite images over the 20 years (2000 to 2019). For analyzing the vegetation changes, the terrain data including elevation, slope, and aspect and climate data temperature and precipitation are used. The result shows that from 2000–2019, the average mean MSAVI2 is 0.361 and the trend increased in 77.9% of the study area. The northern and northeastern areas of the study area revealed a significant increase in vegetation, while in the low land areas it is decreased. The amount of precipitation and temperature degree affect the spatiotemporal distribution of vegetation cover. The MSAVI2 showed a positive relationship with precipitation and temperature. At elevation less than 2000 m, with increasing elevation the MSAVI2 is increasing, but when the elevation reaches 2000 m, the MSAVI2 is decreasing and negatively related to elevation. The vegetation has a positive relation with slopes less than 45°, and at slopes higher than 45°, the MSAVI2 is decreased. The impact of aspect on the vegetation figured out that the largest MSAVI2 is detected in the shady slope due to relatively less evapotranspiration.

scholarly journals The role of soil, water and forest conservation on vegetation cover and landscape greenness in degraded areas of upper Blue Nile

2021 ◽  
Vol 9 (1) ◽  
pp. 3181-3192
Author(s):  
Mengie Belayneh ◽  
Teshome Yirgu ◽  
Dereje Tsegaye
Keyword(s):  
Soil Water ◽  
Vegetation Cover ◽  
Large Scale ◽  
Forest Conservation ◽  
Vegetation Index ◽  
Positive Impact ◽  
Vegetation Density ◽  
Watershed Area ◽  
Landsat Satellite ◽  
The Impact

Recently, large-scale soil, water, and forest conservation/protection practices have been implemented in Ethiopia. This study aimed to evaluate the impact of soil, water, and forest conservation/protection on vegetation cover and landscape greenness in the Gumara watershed. Landsat satellite imageries were used to analyze the changes using land use/cover and net difference vegetation index (NDVI) and its differencing methods. Over the period 1995-2017, forestland and shrub-woodland covers increased by 48.4% (2.8-4.2%) and 8.3% (20.2-21.9%), respectively. Similarly, the NDVI result showed high improvements in landscape greenness and vegetation density. A 13.5% of the watershed area experienced a significant increase, of which 61.4% was observed on forest and shrub-woodland covers. The watershed area covered by very high (NDVI>0.4) and high (NDVI 0.3-0.4) vegetation density classes were increased by 189.2 and 145.5%, respectively. Upon the increasing human pressure and related problems, the observed improvement of vegetation cover and landscape greenness show the positive impact of soil, water, and forest conservation/protection practices done for the last two decades. Therefore, strengthening the current efforts and investing more in sustainable and evidence/priority-based soil, water, and forest conservation measures that are ecologically friendly with diversified livelihood importance can bring a more effective result of land rehabilitation.

scholarly journals Urban Fire Severity and Vegetation Dynamics in Southern California

2020 ◽  
Vol 13 (1) ◽  
pp. 19
Author(s):  
Lauren E. H. Mathews ◽  
Alicia M. Kinoshita
Keyword(s):  
Vegetation Cover ◽  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Current Knowledge ◽  
Fire Severity ◽  
Satellite Image ◽  
Burn Severity ◽  
Native Vegetation ◽  
Riparian Areas ◽  
The Impact

A combination of satellite image indices and in-field observations was used to investigate the impact of fuel conditions, fire behavior, and vegetation regrowth patterns, altered by invasive riparian vegetation. Satellite image metrics, differenced normalized burn severity (dNBR) and differenced normalized difference vegetation index (dNDVI), were approximated for non-native, riparian, or upland vegetation for traditional timeframes (0-, 1-, and 3-years) after eleven urban fires across a spectrum of invasive vegetation cover. Larger burn severity and loss of green canopy (NDVI) was detected for riparian areas compared to the uplands. The presence of invasive vegetation affected the distribution of burn severity and canopy loss detected within each fire. Fires with native vegetation cover had a higher severity and resulted in larger immediate loss of canopy than fires with substantial amounts of non-native vegetation. The lower burn severity observed 1–3 years after the fires with non-native vegetation suggests a rapid regrowth of non-native grasses, resulting in a smaller measured canopy loss relative to native vegetation immediately after fire. This observed fire pattern favors the life cycle and perpetuation of many opportunistic grasses within urban riparian areas. This research builds upon our current knowledge of wildfire recovery processes and highlights the unique challenges of remotely assessing vegetation biophysical status within urban Mediterranean riverine systems.

scholarly journals Mangrove Forest Landcover Changes in Coastal Vietnam: A Case Study from 1973 to 2020 in Thanh Hoa and Nghe An Provinces

Forests ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 637
Author(s):  
Huong Thi Thuy Nguyen ◽  
Giles E. S. Hardy ◽  
Tuat Van Le ◽  
Huy Quoc Nguyen ◽  
Hoang Huy Nguyen ◽  
...  
Keyword(s):  
Mangrove Forest ◽  
Monsoon Season ◽  
Coastal Development ◽  
Northern Coast ◽  
Mangrove Forests ◽  
Visual Interpretation ◽  
Mangrove Restoration ◽  
Coast Of Vietnam ◽  
Landsat Satellite

Mangrove forests can ameliorate the impacts of typhoons and storms, but their extent is threatened by coastal development. The northern coast of Vietnam is especially vulnerable as typhoons frequently hit it during the monsoon season. However, temporal change information in mangrove cover distribution in this region is incomplete. Therefore, this study was undertaken to detect change in the spatial distribution of mangroves in Thanh Hoa and Nghe An provinces and identify reasons for the cover change. Landsat satellite images from 1973 to 2020 were analyzed using the NDVI method combined with visual interpretation to detect mangrove area change. Six LULC classes were categorized: mangrove forest, other forests, aquaculture, other land use, mudflat, and water. The mangrove cover in Nghe An province was estimated to be 66.5 ha in 1973 and increased to 323.0 ha in 2020. Mangrove cover in Thanh Hoa province was 366.1 ha in 1973, decreased to 61.7 ha in 1995, and rose to 791.1 ha in 2020. Aquaculture was the main reason for the loss of mangroves in both provinces. Overall, the percentage of mangrove loss from aquaculture was 42.5% for Nghe An province and 60.1% for Thanh Hoa province. Mangrove restoration efforts have contributed significantly to mangrove cover, with more than 1300 ha being planted by 2020. This study reveals that improving mangrove restoration success remains a challenge for these provinces, and further refinement of engineering techniques is needed to improve restoration outcomes.

scholarly journals Monitoring scrub weed change in the Canterbury region using satellite imagery

2007 ◽  
Vol 60 ◽  
pp. 137-140 ◽  
Author(s):  
J.D. Shepherd ◽  
J.R. Dymond ◽  
J.R.I. Cuff
Keyword(s):  
Satellite Imagery ◽  
Vegetation Cover ◽  
Satellite Image ◽  
Visual Assessment ◽  
Woody Vegetation ◽  
Spatial Change ◽  
Valid Data ◽  
Woody Cover ◽  
Landsat Satellite ◽  
Thematic Data

The spatial change of woody vegetation in the Canterbury region was automatically mapped between 1990 and 2001 using Landsat satellite image mosaics The intersection of valid data from these mosaics gave coverage of 84 of the Canterbury region Changes in woody cover greater than 5 ha were identified Of the 5 ha areas of woody change only those that were likely to have been a scrub change were selected using ancillary thematic data for current vegetation cover (eg afforestation and deforestation were excluded) This resulted in 2466 polygons of potential scrub change These polygons were rapidly checked by visual assessment of the satellite imagery and assigned to exotic or indigenous scrub change categories Between 1990 and 2001 the total scrub weed area in the Canterbury region increased by 3600 400 ha and indigenous scrub increased by 2300 400 ha

scholarly journals Strategi Pengelolaan Hutan Mangrove Di Desa Tanggul Tlare Kecamatan Kedung Kabupaten Jepara

2018 ◽  
Vol 15 (2) ◽  
pp. 117 ◽  
Author(s):  
Bekti Utomo ◽  
Sri Budiastuty ◽  
Chatarina Muryani
Keyword(s):  
Forest Management ◽  
Random Sampling ◽  
Mangrove Forest ◽  
Management Strategy ◽  
Forest Community ◽  
Mangrove Forests ◽  
Technological Advancement ◽  
The Impact ◽  
Forest Rehabilitation ◽  
Cluster Random Sampling

Pengelolaan hutan mangrove merupakan hal yang penting dalam mengupayakan pelestarian lingkungan di kawasan pesisir. Tujuan penelitian adalah untuk mengetahui dampak kegiatan rehabilitasi hutan mangrove dan strategi pengelolaan hutan mangrove di Desa Tanggul Tlare, Kecamatan Kedung, Kabupaten Jepara.Penelitian ini menggunakan pendekatan survei dengan wawancara langsung dan pengamatan lapangan. Populasi adalah seluruh penduduk pesisir di daerah penelitian, teknik pengampilan sampel menggunakan “cluster random sampling”. Dampak yang ditimbulkan dengan adanya rehabilitasi hutan mangrove di daerah penelitian adalah meningkatnya hasil tangkapanikan, mengurangi abrasi pantai, menahantiupan angin laut, semakin banyak tangkapan biota (udang, kepiting, kerang) di pesisir, danmenjadikan kawasan tersebut menjadidaerah objek wisata. Strategi yang perlu dilakukan dalam pengelolaan hutan mangrove diantaranya yaitu memanfaatkan potensi yang ada dengan dengan melakukan penanaman pohon mangrove, membentuk kawasan hutan lindung konservasi hutan mangrove agar kawasan hutan mangrove tetap terjaga baik dan lestari, memberikan sosialisasi atau pemahaman kepada masyarakat akan pentingnya menjaga hutan mangrove dan manfaat yang didapat oleh masyarakat, pentingnya kemajuan teknologi dan memberikan beasiswa kepada masyarakat yang dikira berkompeten dan aktif dalam rehabilitasi mangrove untuk melanjutkan sekolah yang lebih tinggi agar ilmu pengetahuan yang didapat bisa memberikan kontribusi yang positif untuk pengelolaan hutan mangrove yang ideal..Kata kunci: hutan mangrove, masyarakat, pengelolaanEnglish Title: Mangrove Forest Management Strategy In The Village Of Environmental Tlare District Kedung District JeparaABSTRACTManagement of mangrove forests is an important aspect in the effort to conserve the environment in coastal areas. The purpose of this research is to know the impact of mangrove forest rehabilitation and mangrove forest management strategy in Tanggul Tlare Village, Kedung Sub-district, Jepara Regency. This research uses survey approach with direct interview and field observation. Population is the entire coastal population in the study area, sample technique using cluster random sampling. The impacts of mangrove forest rehabilitation in the study area were increased fish catch, reduced coastal abrasion, retained wind breeze, more biota catches (shrimp, crabs, shells) on the coast, and made the area a tourist destination. Strategies that need to be done in the management of mangrove forests include the utilization of existing potentials by planting mangrove trees, establishing protected forest areas of mangrove forest conservation so that the mangrove forest area is maintained well and sustainably, providing socialization or understanding to the community about the importance of maintaining mangrove forests and Benefits gained by the community, the importance of technological advancement and providing scholarships to people who are thought to be competent and active in mangrove rehabilitation to continue their higher education so that the knowledge gained can contribute positively to the management of the ideal mangrove forests.Keywords: mangrove forest, community, managementCitation: Utomo, B., Budiastuti, S dan Muryani, C. (2017). Strategi Pengelolaan Hutan Mangrove Di Desa Tanggul Tlare Kecamatan Kedung Kabupaten Jepara. Jurnal Ilmu Lingkungan, 15(2), 117-123, doi:10.14710/jil.15.2.117-123

scholarly journals Sediment properties and CO<sub>2</sub> efflux from intact and cleared temperate mangrove forests

2015 ◽  
Vol 12 (20) ◽  
pp. 6169-6180 ◽  
Author(s):  
R. H. Bulmer ◽  
C. J. Lundquist ◽  
L. Schwendenmann
Keyword(s):  
New Zealand ◽  
Mangrove Forest ◽  
Abiotic Factors ◽  
Co2 Uptake ◽  
Co2 Efflux ◽  
Mangrove Forests ◽  
Sediment Grain Size ◽  
Significant Difference ◽  
Main Factors ◽  
The Impact

Abstract. Temperate mangrove forests in New Zealand have increased in area over recent decades. Expansion of temperate mangroves in New Zealand is associated with perceived loss of other estuarine habitats, and decreased recreational and amenity values, resulting in clearing of mangrove forests. In the tropics, changes in sediment characteristics and carbon efflux have been reported following mangrove clearance. This is the first study in temperate mangrove (Avicennia marina) forests investigating the impact of clearing on sediment CO2 efflux and associated biotic and abiotic factors. Sediment CO2 efflux rates from intact (168.5 ± 45.8 mmol m−2 d−1) and cleared (133.9 ± 37.2 mmol m−2 d−1) mangrove forests in New Zealand are comparable to rates measured in tropical mangrove forests. We did not find a significant difference in sediment CO2 efflux rates between intact and cleared temperate mangrove forests. Pre-shading the sediment for more than 30 min prior to dark chamber measurements was found to have no significant effect on sediment CO2 efflux. This suggests that the continuation of photosynthetic CO2 uptake by biofilm communities was not occurring after placement of dark chambers. Rather, above-ground mangrove biomass, sediment temperature and chlorophyll a concentration were the main factors explaining the variability in sediment CO2 efflux in intact mangrove forests. The main factors influencing sediment CO2 efflux in cleared mangrove forest sites were sediment organic carbon concentration, nitrogen concentration and sediment grain size. Our results show that greater consideration should be given regarding the rate of carbon released from mangrove forest following clearance and the relative contribution to global carbon emissions.

scholarly journals Impacts of a novel shellfishing gear on macrobenthos in a marine protected area: pump-scoop dredging in Poole Harbour, UK

2017 ◽  
Vol 31 ◽  
pp. 5 ◽  
Author(s):  
Leo J. Clarke ◽  
Luciana S. Esteves ◽  
Richard A. Stillman ◽  
Roger J.H. Herbert
Keyword(s):  
Community Structure ◽  
Protected Area ◽  
Marine Protected Area ◽  
Fishing Effort ◽  
Economic Benefits ◽  
Manila Clam ◽  
Direct Result ◽  
Monitoring Site ◽  
Hediste Diversicolor ◽  
The Impact

Understanding the impact of bottom-fishing gears at various scales and intensities on habitats and species is necessary to inform management. In Poole Harbour, UK, a multiple use marine protected area, fishermen utilise a unique ̋“pump-scoop” dredge to harvest the introduced Manila clam Ruditapes philippinarum. Managers need to balance the socio-economic benefits of the fishery with ecological concerns across the region, which has required a revision of by-laws that include both spatial and temporal measures. Within an operational fishery, we used a Before-After-Control-Impact sampling design to assess the impacts of pump-scoop dredging on benthic physical characteristics and community structure in an area where there was no dredging, an area newly opened to dredging and an area subject to high levels of historic dredging. A sampling grid was used in each area to best capture any fishing effort in the newly opened area. Core samples were taken to a depth of 30 cm within intertidal mudflats. A significant loss of fine sediments was observed in the site subject to high intensity dredging and a significant change in community structure also occurred in both dredged sites throughout the study period. In the newly opened site this was characterised by a relative increase in species richness, including increased abundance of annelid worms, notably Hediste diversicolor and Aphelochaeta marioni and a decline in the abundance of the bivalve mollusc Abra tenuis. These changes, albeit relatively small, are attributed to physical disturbance as a direct result of pump-scoop dredging, although no difference in the classification of the biotope of the site was observed. This is of particular interest to managers monitoring site condition within areas under the new by-laws as the Manila clam is spreading to other protected estuaries in the region.

scholarly journals The Impact of the Environmental Quality Label on the Companies Operating Within the Porto Conte Marine Protected Area in Sardinia (Italy)

2021 ◽  
Vol 2 ◽  
Author(s):  
Carla Zito ◽  
Gavina Manca
Keyword(s):  
Environmental Quality ◽  
Protected Area ◽  
Local Community ◽  
Marine Protected Area ◽  
Local Development ◽  
Area Network ◽  
Product Certification ◽  
Quality Label ◽  
Park Area ◽  
The Impact

The Porto Conte Natural Park, an institution managing and developing the area surrounding the territory of Alghero in Sardinia, decided to join the Park and Protected Area Network Environmental Quality Label (“Marchio di Qualità della Rete dei Parchi e delle Aree Protette”). The label may be awarded to products and accommodation facilities taking special care of the protection of the environmental and local development. In order to evaluate the benefits of this initiative on the companies operating within the park, a survey was administered among the companies awarded with the label and the local community. The companies recognized the benefits thereof, mostly in terms of reputation, as a result of the adoption of responsible environmental behaviors by the members of the business organization. In addition, greater attention to environmental protection resulted in a decrease of waste production and a rigorous compliance with the applicable rules and regulations. Most of the companies interviewed were generally satisfied with the park's project but complained about the poor advertising initiatives by the Park's Managing Body. As a matter of fact, about the 50% of the residents interviewed were not aware of the label award and the product certification. Considering that the residents of the park area are sensitive to environmental issues, and they believe that the park is a major asset for the area, better communication, and a greater involvement of all stakeholders in the initiative undertaken by the Park's Managing Body may help companies expand their business also locally.

scholarly journals Cartographie De L’état Du Couvert Végétal Du Nord De La Côte D’ivoire À Partir D’images Satellites: Exemple De La Zone De Korhogo

2016 ◽  
Vol 12 (29) ◽  
pp. 204
Author(s):  
Avy StéphaneKoff ◽  
Abderrahman Ait Fora ◽  
Hicham Elbelrhiti
Keyword(s):  
Cote D'ivoire ◽  
Vegetation Cover ◽  
Vegetation Index ◽  
Côte D’Ivoire ◽  
Normalized Difference Vegetation Index ◽  
Satellite Image ◽  
The State ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
Landsat Satellite

The purpose of this study is to determine the state of the vegetation cover in the region of Korhogo through remote sensing. Nowadays, the problem of desertification in the Sahel is serious. This could be explained by the phenomenon of climate change. We want to map the state of the vegetation cover in the study area. This study therefore focuses on the state of the vegetation cover in the region of Korhogo in northern Côte d’Ivoire. We will use one Landsat satellite image from December 16th 2000 and proceed with image processing. Processing techniques by the normalized difference vegetation index, the index armor and colorful composition 472. After these treatments in our pictures, we observe the behavior of vegetation. We can then get an overview of the vegetation in this area.

Sign in / Sign up

Export Citation Format

Share Document