Status Of Erosion Research Articles

Using Advanced InSAR Techniques and Machine Learning in Google Earth Engine (GEE) to Monitor Regional Black Soil Erosion—A Case Study of Yanshou County, Heilongjiang Province, Northeastern China

The black soil region experiences complex erosion due to natural processes and intense human activities, leading to soil degradation and adverse ecological and agricultural impacts. However, the complexities involved in quantifying regional erosion poses remarkable challenges in accurately assessing the current status of regional soil erosion for effective soil conservation. To solve this issue, we proposed a new method for monitoring soil erosion using Interferometric synthetic aperture radar (InSAR) technology and machine learning algorithms within the Google Earth Engine platform. The new method not only enables regional-scale monitoring, but also ensures high accuracy in measurement (millimeter-level). The erosion susceptibility of the study area (Yanshou County, Heilongjiang Province, Northeastern China) was also classified using random forest algorithms to refine the monitored and predicted soil erosion. The results indicate that the five-year (2016–2021) deformation in Yanshou County was −11.08 mm, with a significant mean cumulative deformation of −8.08 mm yr−1 occurring in 2017. The driving factor analysis shows that the region was subject to the compound effect of water and freeze–thaw erosion, closely related to crop phenological stages. The susceptibility analysis indicates that 73.3% of the region was susceptible to erosion, with a higher probability in river areas, at high altitudes, and on steep slopes. However, good vegetation cover can reduce the risk of soil erosion to some extent. This study offers a new perspective on monitoring regional soil erosion in the black soil region of China. The proposed method holds potential for future expansion to monitor soil erosion in a larger areas, thereby guiding the strategies development for protection of the agriculturally important black soil.

RUSLE‐based scenarios for sustainable soil management: Case studies from Romanian Subcarpathians

AbstractSoil erosion is one of the major threats to soil sustainability and a global environmental issue causing serious losses of the fertile upper layer of soil, affecting land productivity. Among natural processes and human activity factors, the highest sensitivity of soil loss rate is related to climate changes, as well as land cover/land use transformations. The aim of our paper is to assess the efficacy of various land cover and land use management practices under current climate conditions, as a decision‐making indicator in searching for sustainable soil‐use solutions. The approach is focused on two complementary case studies from the non‐arable hilly area of Romanian Subcarpathians and it is based on aggregating and processing Earth Observation (EO) techniques together with the Revised Universal Soil Loss Equation (RUSLE) equation. The workflow follows three stages: (1) the assessment of the present‐day status of soil erosion, as baseline scenario; (2) the analysis of historical soil erosion dynamics within the last 35 years; and (3) the prediction of soil loss rates in different scenarios of changed conditions related to land cover management and support practices against erosion. The results demonstrate the effectiveness of human interventions in soil erosion prevention, mitigation, or conservation. Soil‐improving management through vegetative measures and soil practices, like grazing management and mulching/manure application, together with forest recovery on eroded slopes may reduce soil loss rates by 50%–70%. However, abandoning the land and allowing the environment to change uncontrollably is a regional‐specific strategy that could accelerate soil erosion on the slopes that are already affected, while decelerating on the others by forest and shrubs regrowth. The significance of our research is related to the identification of the optimal soil use strategies that balance the local communities' economic interests with the effectiveness of sustainable soil management practices, thereby assisting in the achievement of the UN Sustainable Development Goals (SDGs) as indicators for a sustainable future.

On farm diversity and genetic erosion of sweet potato [Ipomoea batatas (L.) Lam.]

ABSTRACT Sweet potato [Ipomoea batatas (L.) Lam.] varieties can be distinguished by their flesh and skin colors (white, yellow, orange, and purple). The present study was undertaken to assess on-farm diversity and the status of genetic erosion of sweet potatoes in Haramaya district, Ethiopia. Data were collected for similarity/dissimilarity index, preference index, and genetic erosion. The result of the preference index indicated the highest preference index (25.60) with preference rank 1 recorded for the BeelaBochol genotype as the lowest preference index (12.10) was recorded for the BeelaBaleyso genotype. About 66% of the respondents use the intercropping system for sweet potato cultivation. The majority of respondents 97% observed loss of sweet potato varieties. Eighty-two percent of the respondent farmers suggested the use of their seed source for planting. About 73% of the respondents suggested the cultivation of sweet potato as a subsistence crop. The major constraints of sweet potato cultivation, as suggested by the respondents, were tiresome land preparation 37%, lack of improved variety 26%, land scarcity 23%, and market demand 15%. It can be concluded from the result of the present study that farmers can identify and prefer sweet potato genotypes frequently using storage root yield and boiled quality.

Morphometric and morphotectonic attributes of Ken basin, central India: Depicting status of soil erosion, and tectonic activities

The present study reveals the significance of the morphometric and morphotectonic parameters for the evaluation of soil erosion and tectonism in the Ken River basin of Central India. About fifty two morphometric (linear, areal and relief) and ten morphotectonic parameters were analyzed by using digital elevation model and Geographic Information System. The estimated value of bifurcation ratio (3.60 to 7) and mean bifurcation ratio (4.85) show the geological and structural control on drainage pattern. The values of drainage density (0.75), frequency, and infiltration ratio (0.23) indicate that the basin was evolved in a permeable geological and subsoil conditions with thick vegetal cover and exhibits the medium infiltration rate. The elongation ratio (0.23) and form factor (0.263) infer that the basin is elongated and show low flow peaks of longer duration. The Rho value (0.613) indicates higher hydrological storage or high discharge of water during flood period. The ruggedness number (0.35) indicates a moderately rugged basin which is less prone to soil erosion.The sinuosity index (S = 1.702) depicts the meandering nature of the river. The asymmetric and transverse asymmetric factor (T) infers that the basin was not tilted due to tectonic activities. However, the sudden drop in the elevations of the longitudinal profile of the Ken River noticed at few localities, particularly at the marginal contacts with the Yamuna envisages the influence of tectonics in the geological past. It may depict the existence of peripheral bulge tectonics along the marginal contacts of the lower reaches of the Ken basin. Our results will be helpful to researchers to explore the implications of morphometric and morphotectonic indices in the study of soil loss and tectonic activity in other cratonic rivers. This study will also assist the planners and researchers in planning the watershed management and in understanding tectonic and palaeoseismic activities.

Determining Causes of Erosion and Sedimentation at Cua Dai Beach, Quang Nam Province, Vietnam: Applying an Integrated Geographical Approach

Cua Dai is one of the 21 estuaries in the Central region and is the first river mouth to the north of the South Central Coastal region. It is renowned for its beautiful beaches, which attract many tourists. Additionally, the Cua Dai River mouth area is a fishing ground for local fishermen due to its rich marine biodiversity. However, a serious issue has emerged in this area. Cua Dai Beach has been facing severe erosion for several years, threatening its natural beauty. This article employs an integrated geographical approach, utilizing two main methods: document collection (research on geology and hydrodynamics) to determine historical changes and on-site surveys (in point format) to assess the extent and current status of erosion. Information exchange with residents is also conducted to understand the situation and gather data identifying the causes of erosion and sedimentation in the Cua Dai area, part of the lower Thu Bon River system in south-central Vietnam. The results indicate that erosion and sedimentation in the research area are influenced by both natural and anthropogenic factors, with no single factor prevailing.

Study on the Flexible Erosion Reducing Additive Containing Silicon and Boron

In view of the severe erosion and wear of gun barrels, we first briefly introduce the research status of erosion reducing additives in this article. Based on these analyses, polydimethylsiloxane (PDMS)-Na2B4O7 additive and PDMS-H3BO3 additive are designed and prepared. These two additives are very flexible and can be folded or bent in any direction. After that, the erosion reducing performance of paraffin wax (PW)-TiO2 additive, PDMS-Na2B4O7 additive and PDMS-H3BO3 additive are studied through the vented vessel test. The results show that the erosion reducing performance of PDMS-Na2B4O7 additive and PDMS-H3BO3 additive is better than that of PW-TiO2 additive. But PDMS-Na2B4O7 additive cannot be completely burned and there are residues at the loading position of additives. PDMS-H3BO3 additive can provide the best erosion reducing performance and without residues. Therefore, PDMS-H3BO3 additive is selected for further research. The effect of granularity of H3BO3 on the erosion reducing performance is studied and compared with PW-TiO2 additive. The results show that the erosion reducing rate of PDMS-H3BO3-500 mesh additive and PDMS-H3BO3-3000 mesh additive is increased by 6.24% and 6.46%, respectively, compared with PW-TiO2 additive. PDMS-H3BO3-3000 mesh additive can provide better erosion reducing performance. But the granularity of H3BO3 has no obvious effect on the erosion reducing performance.

FARMERS PERCEPTIONS ON SOIL EROSION IN SEBEYA CATCHMENT, RWANDA

Soil erosion is one of the major causes of land degradation which result in low agriculture productivity. Especially, western part of Rwanda including Sebeya catchment has high susceptibility to erosion leading to huge amounts of soil loss. This study held to explore the actual status of soil erosion in Sebeya catchment. Global Information System data were used for catchment delineation. Qualitative and quantitative data were collected and analyzed. Specifically, 75 farmers living and having farm lands in the catchment were interviewed in terms of knowledge on soil erosion, causes and control measures. The results showed that streambank erosion is due to the erosive power of runoff from uplands areas with (18.7%). The main natural causes of soil erosion in Sebeya catchment are heavy rainfall (69.33%) and the slope steepness (28%). Public and private land conservation agencies should be more involved in soil management centred on farmer’s awareness and capacity building.

Current status and formational mechanisms of coastal erosion on typical islands in China

A geological hazard survey of 82 islands in coastal China from 2010 to 2012, and subsequent periodic monitoring of coastal erosion on 10 representative islands from 2012 to 2014, found 138 coastal erosion points on 39 islands. Coastal erosion was a typical pattern of the coastal geological hazards, with the most serious impacts occurring on the southeastern coast of Chongming Island, the maximum erosion rate was 18.3 m/a under the conditions of sediment reduction and drastic hydrodynamic changes of the Yangtze river. The primary causes were changes in river dynamics, the marine hydrodynamic environment, and human activities, the specific factors included sea-level rise, river diversion, river-borne sediment reduction, wind-driven waves, storm tides, construction, coastal degradation, beach drainage, and sand mining. Natural and human factors accounted for 57 and 43 % of coastal erosion effects, respectively. Sea-level rise operated on a long-time scale, causing an annual mean shoreline retreat of 0.15 – 0.30 m, although such changes were not obvious over short time scales, they were significant at the decennial and centennial scale. Storm tides were among the most important factors operating over shorter time scales, although increasing human development of islands is rapidly becoming a significant cause of coastal erosion.

The terrestrial impact crater record: A statistical analysis of morphologies, structures, ages, lithologies, and more

AbstractThe number of newly discovered and confirmed impact structures on earth is growing continuously. In this review paper, the main attributes of 198 confirmed impact structures and 10 further structures, for which final confirmation based on the identification of shock features is not yet entirely satisfying, are presented. The impact craters are compared statistically, with regard to their morphology, structure, and status of erosion or burial. The size– and age–frequency distributions of terrestrial impact structures are presented. Additional aspects concern target petrography and shock effects found in the craters. Based on the discovery statistics of presently known crater structures, an estimate can be made of the number of craters that await discovery. The paper is complementary to the recently published atlas of terrestrial impact structures by Gottwald et al. (2020).

Development of global soil erosion research at the watershed scale: a bibliometric analysis of the past decade.

At the watershed scale, soil erosion is a cascading system that includes detachment-transport-deposition processes while sediment yield is the net balance of detachment and deposition at the watershed outlet. Due to the temporal-spatial variations of rainfall and landscapes, the relationships between soil erosion and sediment yield are complex and non-linear. Soil erosion processes and sediment yield at the watershed scale have attracted widespread attention; however, few systematic studies have been performed. In this study, a bibliometric analysis and visualization are used to understand the global research status of soil erosion and sediment yield at the watershed scale and provide a reference for researchers to establish future research directions. The USA and China were the most active contributors and had the most publications and active institutions, while Jean Poesen, D.E. Walling, and Xingmin Mu were the top three lead authors in this field. A keyword evolution analysis showed that determining the relationship between soil erosion and the watershed landscape and identifying the sediment source and off-site environmental and ecological effects caused by soil erosion have attracted considerable research attention. Additionally, significant progress has been made in the study of "connectivity," and future research should integrate connectivity and soil erosion models to explain the soil erosion, sediment transport, and deposition processes at the watershed scale.

Recent advances in the assessment of soil erosion vulnerability in watersheds

Water induced soil erosion has always been a matter of concern in watersheds as they increase the soil vulnerability towards erosion. If unchecked, the eroded material reduces the capability of the river to carry the adequate amount of water and increase the amount of sediments in the watershed area. Determining vulnerability of soil to erosion plays a key role in identifying the extent of fragility and helps in making appropriate plans for conservation. Among various methods present to assess soil erosion vulnerability, there is a need to understand the frequently used methods so far and its advancement with time. Various models have been used in past two decades (1991-2019) and the Revised Universal Soil Loss Equation (RUSLE) is the most used model because of its quantitative ability to estimate the average annual soil loss due to erosion in a watershed and its compatibility with the GIS interface. Different approaches like MCDM, SWAT etc. are being utilised to study soil erosion vulnerability of watersheds. This review showed that the frequently used MCDM method is a Compound Factor (CF) method and that RUSLE is a most used quantitative approach. The review identifies 14 different methods which includes 4 methods which provide quantitative estimation while the other 10 methods are used for qualitative assessment of soil erosion vulnerability. Being the most adopted approach, various modifications of different factors of RUSLE introduced by researchers have made it more efficient with time. This review identifies the trend in advancement of various approaches and methods to study soil erosion vulnerability of watersheds around the world and also how various studies are distributed in the Himalayan and non-Himalayan region. The review also provides an understanding of the status of various current approaches to study soil erosion in a watershed and lists the improvements adopted in the frequently used approaches during 1991 and 2019.

On the status and mechanisms of coastal erosion in Marawila Beach, Sri Lanka

Coastal erosion remains a problem in many developing countries because of a limited understating of erosion mechanisms and management. Sri Lanka is one of the countries that recognized coastal erosion management as a governmental responsibility, in 1984. Nevertheless, erosion mechanisms have not yet been fully understood. We investigate the status and mechanisms of coastal erosion using empirically collected data and various techniques, such as Geographic Information System analysis of satellite images, drone mapping, bathymetric surveys, hindcasting of wind-induced wave climate, questionnaires, and semi-structured interview surveys. We identified wave climate change, reduction in river sand supply, interruptions from previous erosion management measures, and offshore sand mining as potential causes of erosion considering sediment flux and rates of erosion. Erosion of Marawila Beach began during 2005–2010 and has been continuing ever since, due to a lack of integration in the beach and the entire sediment system. It is necessary to identify the long-term, large-scale changes in the sediment system through data collection. This study highlights the importance of an integrated coastal erosion management plan and could facilitate better coastal erosion management in Sri Lanka, as well as in other developing countries.

Dynamic Changes of Soil Erosion in the Taohe River Basin Using the RUSLE Model and Google Earth Engine

The Taohe River Basin is the largest tributary and an important water conservation area in the upper reaches of the Yellow River. In order to investigate the status of soil erosion in this region, we conducted a research of soil erosion. In our study, several parameters of the revised universal soil loss equation (RUSLE) model are extracted by using Google Earth Engine. The soil erosion modulus of the Taohe River Basin was calculated based on multi-source data, and the spatio-temporal variation characteristics of the soil erosion intensity were analyzed. The results showed the following: (1) the average soil erosion modulus of the Taohe River Basin in 2000, 2005, 2010, 2015 and 2018 were 1424, 1195, 1129, 1099 and 1124 t·ha−1·year−1, respectively, and the overall downward trend was obvious. (2) The ranges of soil erosion in the Taohe River Basin in 2000, 2005, 2010, 2015 and 2018 are basically the same—mainly with slight erosion—and the soil erosion in the middle and lower reaches was more serious. (3) When dealing with the vegetation cover factor and conservation practice factor in the RUSLE model, Google Earth Engine provided a new approach for soil erosion investigation and monitoring over a large area.

Research Progress on Soil and Water Loss and Soil and Water Conservation in Karst Areas

Based on the research of soil erosion and soil and water conservation in karst areas in China in recent years, the status and progress of soil erosion and soil and water conservation in karst areas in China are discussed. The results show that the soil and water loss in the karst area mainly has two types of soil erosion: surface soil erosion and underground soil erosion. Soil and water loss management in karst areas mainly adopts measures to adjust land use structure, increase vegetation coverage, carry out slope-to-ladder construction, and promote clean energy applications. Different governance models should be adopted for different landform types, different landform parts, different slopes, and different levels of rocky desertification in karst areas.

Land degradation and management of red beds in China: Two case studies

Red beds cover approximately 9.5% of China, and are home to approximately 144 million people. In total, 83% of these lands are distributed in humid regions making it an important part of research on red bed soil erosion in China in these areas. This paper presents the main types of land degradation in red bed landscapes and the status of current soil erosion in a typical red bed basin, the Nanxiong Basin located in the north of Guangdong Province, China, and establishes the connection between management strategies and regional economic development in humid red bed regions of China. The soil erosive modulus was calculated in the Nanxiong Basin by using RUSLE (The Revised Universal Soil Loss Equation). The results of overlapping analyses demonstrated that appropriate measures, such as the Return Farmland to Forests initiative, should be taken at the junction of central red bed areas and mountainous areas in order to mitigate current soil erosion. Two examples are presented to demonstrate this: the tourism development in Mt. Danxiashan, a noted scenic mountainous area near Nanxiong Basin, and the land degradation mitigation in the Nanxiong Basin. Both examples promote local economic growth while simultaneously protecting the environment. A ‘stakeholder’ strategy is pursued at Mt. Danxiashan, which can help residents to understand their positive effects on the environment as well as increase their income. The second example, in Nanxiong City, showcases how local farmers became stakeholders by implementing contract responsibility and self-support systems for economic forests and terraced land in the 1980s.

Participatory assessment of soil erosion severity and performance of mitigation measures using stakeholder workshops in Koga catchment, Ethiopia

Farmers possess a wealth of knowledge regarding soil erosion and soil and water conservation (SWC), and there is a great demand to access it. However, there has been little effort to systematically document farmers' experiences and perceptions of SWC measures. Sustainable Land Management (SLM) has largely evolved through local traditional practices rather than adoption based on scientific evidence. This research aimed to assess soil erosion and performance of different SWC measures from the farmers' perspective by documenting their perceptions and experiences in Koga catchment, Ethiopia. To this aim, workshops were organised in three sub-catchments differing in slopes and SWC measures. Workshops included group discussions and field monitoring of erosion indicators and systematically describing the status of soil erosion, soil fertility and yield to assess the performance of SWC measures. Results show that farmers are aware of the harmful effects of ongoing soil erosion and of the impacts of mitigation measures on their farms. Sheet erosion was found to be the most widespread form of erosion while rill damage was critical on plots cultivated to cereals on steep slopes. The average rill erosion rates were 24.2 and 47.3 t/ha/y in treated and untreated farmlands, respectively. SWC reduced rill erosion on average by more than 48%. However, the impacts of SWC measures varied significantly between sub-watersheds, and farmers believed that SWC measures did not prevent erosion completely. Comparatively, graded stone-faced soil bunds revealed maximum desired impacts and were most appreciated by farmers, whereas level bunds caused water logging. Most traditional ditches were highly graded and begun incising and affected production of cereals. Despite the semi-quantitative nature of the methodology, using farmers' perceptions and experiences to document land degradation and the impacts of SWC measures is crucial as they are the daily users of the land and therefore directly affecting the success or failure of SWC measures.

Integrated Remote Sensing and Geographic Information System Based RUSLE Modelling for Estimation of Soil Loss in Western Himalaya, India

Soil loss due to water erosion was estimated in Kangra region of western Himalaya using revised universal soil loss equation modelling (RUSLE) in conjunction with Remote Sensing (RS) and Geographic Information Systems (GIS). The various parameters such as rainfall erosivity (R), soil erodibility (K), topographic factor (LS), crop management factor (C) and support practice factor (P) were derived using standard techniques. The study revealed that forest cover, crop land and scrub/grass land constitute 87.4 % of soil erosion susceptible area. The rate of depletion of soil was estimated at 25.63 t/ha/yr. It was highest in stony/barren land (60.3 t/ha/yr) and lowest in case of tea garden (16.09 t/ha/yr). It was felt that there is a need of implementation of soil and water conservation measures in the region to curb the soil loss. The undulating nature of terrain was observed as the main contributing factor for soil erosion. It was concluded that RS and GIS based RUSLE model can be efficiently used in mountainous regions to determine the status and extent of soil erosion.

Water, soil and nutrient losses caused by Wenchuan Earthquake: a case study in Pengzhou

Wenchuan Earthquake triggered a large number of geological hazards, dramatically stimulating soil erosion. This study was carried out in Pengzhou County, Sichuan Province. By comparison of sediment, runoff and nutrient losses in earthquake-damaged forests (EF) and unaffected forests (UF), the actual status of soil erosion after the Wenchuan Earthquake was investigated by runoff plots. Results showed that water and soil losses were dramatically increased after earthquake. During the study period (from August to November 2010), UF runoffs were 19.26, 36.76, 10.68 and 7.51 L m(-2), while total runoffs in EF sites were 30.41, 25.79, 5.03 and 2.67 L m(-2) respectively, which were 15, 15, 18 and 19 times more than those in UF. Total sediment losses in EF sites were 28.94, 25.16, 4.11 and 1.98 t km(-2) respectively while in UF they were 707.69, 610.05, 113.43 and 58.95 t km(-2) respectively during the same study period, i.e. 23, 23, 32 and 29 times more than those in UF. Path analysis showed that both vegetation and rainfall exerted an indirect influence on sediment loss by significantly influencing runoff, which correlated with sediment loss very significantly. Although no obvious differences of the nutrients' concentration in runoff water (soluble organic carbon (SOC), total nitrogen (TN), total phosphorus (TP) and total potassium (TK)) between EF and UF sites were observed, total losses of the four nutrients were significantly higher in EF than in UF sites (for example, in EF sites, SOC, TN, TP and TK losses were 970.52, 114.46, 2.26 and 307.00 g m(-2) respectively, while in UF they were 38.13, 4.22, 0.10 and 13.28 g m(-2)) due to significantly higher runoff in EF sites. In conclusion, soil erosion was significantly more serious due to the loss of forested lands resulting from the Wenchuan Earthquake, delaying the restoring process of forest cover and weakening the ecological linkage between upstream and downstream.

Impact of soil erosion associated factors on available feed resources for free-ranging cattle at three altitude regions: Measurements and perceptions

The study was conducted to assess the status and trends of soil erosion and relate the perceptions of farmers on cattle productivity and botanical indicators to measured ecological conditions of rangelands in three altitude regions of southwest Ethiopia. A total of 342 farmers were interviewed. In addition, the ecological condition of rangelands was assessed. Severe soil erosion, ranked as the primary restriction to free-ranging livestock, occurred predominantly in the lower altitude region (LAR) (P < 0.05). More farmers in LAR witnessed an inadequacy of palatable plant biomass, grazable pasture as well as increased gully formation and expansion, which are strong indicators of soil erosion (P < 0.001). In addition to a decrease in grass cover and productivity of cattle, botanical composition, species richness and grazing capacity of herbaceous plants, less fodder trees and shrubs were observed (P < 0.05). There was a corresponding increase in the percentage of bare ground and soil erosion status along the degradation gradients (P < 0.05). The reported shift in botanical composition, and especially encroachment of invading plant species, can be attributed to soil erosion (P < 0.001). The results suggest that erosion is associated with reduced availability of feed resources and is related to altitude variation.

Status of coastal plantations and its impact on land stabilization, soil PH and salinity at Nolchira range of Hatiya Island, Bangladesh.

The study was conducted to explore the status of coastal plantations, land accretion, erosion and stabilization at Nolchira Range of Hatiya Upa-zila of Noakhali district, Bangladesh. Among four beats of Nolchira coastal Range, Ochkhali and Dalchar beats were selected. Sample plots of 20m×20m (400m 2 ) were taken randomly for mangrove plantation. For highway, embankment and feeder road plantations, 50m long strips were selected for the vegetation sampling. In Nolchira forest range of Hatiya Island about 14370.73 ha of newly accreted land was planted by Sonneratia apetala of which 12450.62 ha was stabilized during the period of 1967 to 2007 under Coastal Afforestation Project (CAP), Mangrove Afforestation Project (MAP), 2 nd Forestry Project, Forest Resource Management Project (FRMP) and Revenue projects in Nolchira range. The rest 1920.11 ha was eroded by river and wave action. 27 years old Sonneratia apetala attained 21 cm dbh and 16.5 m height growth in Ochkhali beat, whereas 27 years old Sonneratia apetala attained 24.5 cm dbh and 18.5 m height growth in Dalchar beat. Whereas, 27 years old Albizia saman attained 54 cm dbh in Ochkhali highway plantations, 40 cm in 14 years old embankment and 16.4 cm in 12 years old feeder road plantations respectively. Similarly, Acacia auriculiformis attained the dbh of 37 cm, 19.6 cm and 10.5 cm respectively for the same site. Whereas, Casuarina equisetifolia attained the dbh of 17 cm, 13.5 cm and 12.5 cm respectively in the same site. The soil P H and salinity showed lower in old coastal plantation in comparisons in comparison to uri-grass land and newly accreted char lands. Among 12450.62 ha of stabilized coastal lands, 795 ha mature forest land was already converted into agricultural land. The stabilized coastal plantations protected the coastal environment of Hatiya Island from the severe loss and damage of coastal lives and properties due to the catastrophic effect of super cyclone SIDR in November 2007.