A comparison of growth performance of trees species planted to restore the degraded area of former copper mining in Mamut, Ranau, Sabah (original) (raw)
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The Growth of Local Tree Species on Post-Coal Mining Areas in East Kalimantan
Indonesian Journal of Forestry Research
Post-coal mining areas need rehabilitation to restore its functionality. Not all plants could grow well on bare ex-coal mining area because of the excessive light intensity and extreme temperature fluctuations. This study is aimed to determine suitable local tree species for rehabilitating mined areas. Planting was carried out in November 2012, and observations were made in November 2015. The study site was in the district of Samboja, Kutai Kartanegara, East Kalimantan Province, Indonesia. Research results revealed that seven tree species survived well in the ex-coal mining land, i.e., Vitex pinnata L., Syzygium scortechinii (Merr.) Merr. & Perry, Syzygium polyanthum (Wight) Walp., Shorea balangeran (Korth.) Burck, Macaranga motleyana (Mull.Arg.) Mull.Arg., Cleistanthus myrianthus (Hassk.) Kurz and Syzygium lineatum (DC.) Merr. & L.M. Perry. From the seven species V. pinnata, Sy. scortechinii and Sy. polyanthum performed best in both survival and growth rates. This study suggests th...
A study was conducted to assess the growth performance of eight native tropical tree species planted on a coal mine spoil on Singrauli Coalfields, India. Of all the investigated tree species Acacia catechu, Albizia lebbeck, Dalbergia sissoo and Millettia pinnata were represented by the leguminous species while Azadirachta indica, Gmelina arborea, Tectona grandis and Terminalia bellerica were represented by the non-leguminous species. The overall performance of the leguminous tree species was greater than the non-leguminous tree species. Among all the studied tree species, the leguminous Albizia lebbeck was the best performing species while the non-leguminous Terminalia bellerica was the poorest performing tree species on coal mine spoil. Gmelina arborea and Azadirachta indica were the best performing tree species among the non-leguminous species.
This study was conducted at Meti Site of Haro Sabu Agricultural research center, Oromia. The objective of this study was to evaluate the adaptability and growth performance of different multipurpose trees/shrubs species and select or screen those best performed and adapted to the area. For this seedling of: Acacia senegal, Pinus patula, Callistemon citrinus, Olea africana and Spathodea nilotica were out planted on a plot of 14m*14m. The space between block of each species was 3m and Spacing between rows and within row was based on the recommendations of each species. In order to fit the given objectives growth parameter data of trees/shrubs (height, root collar diameter (only for trees< 1.3m in height), diameter at breast height (for trees ≥1.3m height) and survival rate) were collected by an interval of 6 months and Analyses of variance and LSD tests were employed to assess the results at p=0.05 using Minitab 17. As a result, the higher mean height growth was observed on Callistemon citrinus (2.59 m), Spathoda nilotica (2.48 m) and Pinus patula (2.34 m). Again Gains in root collar diameter (RCD) was significantly highest on Pinus patula (37.75cm, 2.81cm) and Spathodea nilotica (32.08cm, 3.52cm).The Mean survivals of all trees grown at site were good ranging from 85.36% (Pinus patula) to 100% (Spathodea nilotica (100%). Generally this finding may help forest managers (stakeholder) to allocate species into the site that grow and adapt well. To select the most adaptable ones for such areas , use them at wider scale and increase their importance in the overall agricultural productivity (soil conservation, timber production, shading purpose, etc) and in general multifunction purposes in the area, further testing of provenances of the best performing species is recommended.
STABILITY ASSESSMENT OF TREE SPECIES IN THE UNIVERSITY OF ILORIN PERMANENT SITE, NIGERIA
FUW TRENDS in Science and Technology, 2022
The contribution of trees to environmental, social, and economic wellbeing cannot be overestimated. Trees contribute significantly to human health, environmental quality, aesthetic quality, and the financial security of humankind. This study assessed the stability of tree species in the University of Ilorin permanent site, Nigeria, using slenderness coefficient as the stability index. A stratified random sampling technique was used by dividing the study areas into five different strata (academic area, administrative area, business area, student hall, and religious area). Diameter at breast height (Dbh) and the total height of living trees with Dbh ≥ 10cm were measured while basal area, slenderness coefficient, and relative density for trees in the study area were computed using relevant mathematical equations. The study observed one thousand four hundred and ninety (1490) tree species distributed across 18 taxonomic families in the study area. Daniella oliveri was the most abundant species with a relative density of 20.27%, while Cumbretum erythrophyllum was the least occurring species (0.07% relative density). The mean Dbh, height, and basal area for trees were 79.42±13.564 cm, 18.66±3.456 m, and 0.47±0.165 m 2 , respectively. About 77.85% of the trees were of low slenderness coefficient, 14.97% were of moderate slenderness coefficient, and 7.18% were of high slenderness coefficient. It implies that most of the trees were not susceptible to wind-induced damage. The study, therefore, recommends that tree species with high slenderness coefficient be removed and replaced with young trees at a ratio of 3:1.
Adaptation and Growth Performance of Multipurpose Trees Under Haro Sebu Condition
Journal of Biology, Agriculture and Healthcare , 2017
This study were conducted at Haro Sabu Agricultural research center on station. The objective of this study were to evaluate adaptability and growth performance of different multipurpose tree species and to select or screen those best performed and adapted to the area. Seedlings were out planted on a plot of 12mx12m for each species, spacing between row and within row were based on recommendation of each species. In order to fit the given objectives data were collected on the following parameters:-Date of sowing, date of emergence, date of planting, growth parameters: diameter (RCD and DBH), height and survival rate were recorded and measured. Diameter(RCD and DBH),height and survival rate were collected by an interval of 3 months.As a result, Height growth response were shown significance difference (p<0.000) for Grevillea robusta, Casuarina equisetifolia and M. stenopetala. Similarly, the growth response in root collar diameter data also reviled that there were highly significant differences (p<0.000) among the species. High mean value of root collar diameter was recorded for Grevillea robusta ,Casuarina equisetifolia while it was low in Cordia africana and Mellitia ferrugenia respectively. The basal area of the species shows high mean value on Grevillea robusta followed by Casuarina equisetifolia while had low mean value on Cordia africana.The survival result also showed, Moringa stenopetala were higher (84.72%) followed by Grevillea robusta (81.81%), Casuarina equisetifolia (73.86%) ,and Mellitia ferrugenia (73.33%), while survival of Cordia africana were the lowest(40%). Thus, poor survival and growth response were observed on Cordia africana that might be explained as a response to the specific site condition of the study area. Generally, these findings may help forest managers (stakeholder)to properly allocate species into the site that grow and adapt well. Further testing of provenances of the best performing species is recommended to select the most adaptable ones for such areas for future forest plantation establishment at wider scale; on which success of forest plantations depend.