scholarly journals Rehabilitating Degraded Hardwood Stands on a Bottomland Terrace Site with Overstory Removal and Oak Enrichment Planting: 14-Year Results

2018 ◽  
Vol 08 (04) ◽  
pp. 459-471
Author(s):  
Matthew G. Olson ◽  
Shaik Hossain ◽  
Kyle Cunningham ◽  
Matthew H. Pelkki ◽  
Chris Stuhlinger
Keyword(s):  
Enrichment Planting ◽  
Terrace Site

Greenhouse gas fluxes from an oil palm plantation on mineral soil in Indonesia undergoing riparian restoration 

2021 ◽  
Author(s):  
Stella White ◽  
Ribka Sionita Tarigan ◽  
Anak Agung Ketut Aryawan ◽  
Edgar Turner ◽  
Sarah Luke ◽  
...  
Keyword(s):  
Environmental Impact ◽  
Greenhouse Gas ◽  
Oil Palm ◽  
Forest Tree ◽  
Native Forest ◽  
Forest Trees ◽  
Riparian Restoration ◽  
Enrichment Planting ◽  
Mineral Soils ◽  
Ghg Fluxes

<p>Oil palm (OP) growers are under pressure to reduce their environmental impact. Ecosystem function and biodiversity are at the forefront of the issue, but what effect do changes in management practices have on greenhouse gas (GHG) fluxes from plantations? </p><p>The Riparian Ecosystem Restoration in Tropical Agriculture (RERTA) Project is a collaboration between the University of Cambridge and the SMART Research Institute in Riau, Indonesia. This project explores the ecological changes resulting from the restoration of riparian margins between plantations and watercourses. Four management strategies were applied on both sides of a river to create 50m riparian buffers, 400m in length: (1) A control treatment of no restoration, the removal of mature OP and replanting of young OP to the river margin; (2) Little to no agricultural management of mature OP; (3) Clearance of mature OP and enrichment planting with native forest trees; (4) Little or no agricultural management of mature OP and enrichment planting with native forest trees. Here we present a specific objective to investigate the effect of riparian restoration – and related changes in soil characteristics, structure and vegetation cover – on fluxes of N<sub>2</sub>O, CH<sub>4</sub> and CO<sub>2</sub> from mineral soils.</p><p>The experimental site began as a mature OP plantation, with monthly background measurements taken between January and April 2019. Palms were felled in April 2019 and monthly sampling was resumed when replanting and restoration began, in October 2019. We measured GHGs using static chambers; 6 in each riparian treatment and 16 in the actual OP plantation, 40 chambers in total. Samples were analysed using GC-FID/µECD.</p><p>Background measurements before felling showed high variability, but indicated no difference between the four experimental plots and the rest of the plantation. Fluxes measured following replanting were also highly variable, with no significant differences observed between treatments. N<sub>2</sub>O fluxes were relatively low before felling as the mature palms were no longer fertilised. Higher emissions were seen in the disturbed immature OP and forest tree treatments following replanting. Though the sites appeared to recover quickly and emission fluxes decreased after a few months, presumably as the soil settled and new vegetation began to grow. CH<sub>4</sub> uptake was seen in the immature OP treatment immediately after replanting. In subsequent months no clear trends of CH<sub>4</sub> uptake or emission were observed, with the greatest variability generally seen in the forest tree treatment. CH<sub>4</sub> emissions increased in October 2020 with the beginning of the rainy season, most notably in mature OP and mature OP with forest tree treatments. Following restoration CO<sub>2</sub> emissions were higher in treatments with established plant communities – mature OP and mature OP with forest trees.</p><p>These results suggest that riparian restoration had no significant effect on GHG fluxes from mineral soils, and would not alter the overall GHG budget of a plantation. If there is no additional GHG burden and riparian restoration results in enhancing biodiversity and ecosystem services as well as improving water quality, it will be a viable management option to improve the environmental impact of an OP plantation.</p>

scholarly journals Enrichment planting to restore degraded tropical forest fragments in Brazil

2018 ◽  
Vol 15 (1) ◽  
pp. 3-10 ◽  
Author(s):  
Julia Raquel S. A. Mangueira ◽  
Karen D. Holl ◽  
Ricardo R. Rodrigues
Keyword(s):  
Tropical Forest ◽  
Forest Fragments ◽  
Enrichment Planting

scholarly journals GROWTH AND YIELD OF Shorea parvifolia PLANTED UNDER AKASIA PLANTS IN KAPUAS, CENTRAL KALIMANTAN

2016 ◽  
Vol 7 (3) ◽  
pp. S48-S49
Author(s):  
Wahyudi .
Keyword(s):  
Native Species ◽  
Research Result ◽  
Volume Growth ◽  
Acacia Mangium ◽  
Average Diameter ◽  
Growth And Yield ◽  
Central Kalimantan ◽  
Enrichment Planting ◽  
The Moment ◽  
Silvicultural System

Shorea parvifolia is the native species of Kalimantan and has a high commercial value. This research was aimed to analysis the growth and yield of meranti planted under Acacia mangium stands, as enrichment planting on the TPTI silvicultural system.  The research was conducted at Kapuas District, Central Kalimantan Province. Type of soil at the site is ultisol with 2 606 mm/year of precipitation average.  Initially, Acacia mangium planted with space namely 3 x 3 m at 1993. After two years, seedlings of Shorea parvifolia were planted among akasia plants with 1 111 tress/ha of density.  Thinning of akasia plants were conducted stage by stage, especially at the stunted plants or dead. The data were latest analyzed at 2014 or at the moment of 20 years old.  Research result showed that at the 1, 5, 10, 15, and 15 years old, life percentage of Shorea parvifolia are 94.8%, 78%, 66.4%, 57.5%, and 53% respectively. Average diameter of Shorea parvifolia at the same times are 1.27 cm, 6.13 cm, 12.8 cm, 19.86, and 27.46 cm respectively, and their average total height are 1.51 m, 5.27 m, 10.89 m, 17.18 m, and 24.41 m respectively. Volume growth of Shorea parvifolia at the same times namely 0.05 m3/ha , 3.97 m3/ha, 36.93 m3/ha, 145.44 m3/ha, and 303.62 m3/ha respectively.Key words: growth and yield, CAI, MAI, Shorea parvifolia.

scholarly journals Species Association of the Dominant Tree Species in an Old-Growth Forest and Implications for Enrichment Planting for the Restoration of Natural Degraded Forest in Subtropical China

Forests ◽  
2019 ◽  
Vol 10 (11) ◽  
pp. 957 ◽  
Author(s):  
Liu ◽  
Zhu ◽  
Wang ◽  
Ma ◽  
Meng
Keyword(s):  
Tree Species ◽  
Rank Correlation ◽  
Economic Benefits ◽  
Natural Forests ◽  
Subtropical China ◽  
Old Growth ◽  
Species Association ◽  
Old Growth Forest ◽  
Enrichment Planting ◽  
Adult Trees

Subtropical natural forests are unique due to their ecological and economic functions. However, most of these forests are highly degraded, which impairs the ability to provide ecological and economic benefits. Enrichment planting is an important approach to restore natural degraded forests. Species arrangement is of great importance to inform enrichment planting. Species association refers to the interrelationship of different species occupying a habitat and is a static description of the organic connection formed by the interaction of species. Species association, therefore, provides a scientific basis for species arrangement in enrichment planting. Additionally, because an old-growth forest is a climax community that has attained great age without significant disturbance, the species association in an old-growth forest can provide valuable information on the reference conditions for forest management. In this study, the species association between dominant tree species (including saplings and adult trees) was investigated in an old-growth forest in the Gutianshan National Nature Reserve in Zhejiang province in subtropical China. The objective of the study was to inform species arrangement for enrichment planting. The result showed that the overall species association exhibited a significant net positive association, indicating a dynamic balance of stable structure and species composition in the old-growth forest. Additionally, the pairwise species association was examined using the χ2 test, the Dice index, and Spearman’s rank correlation coefficient; significant positive and negative pairwise species associations were detected. Based on the species association and the light requirements of the tree species, an optimal species arrangement was determined to support enrichment planting for restoring natural degraded forests. It is expected that the results of this study will contribute to the restoration of natural degraded forests in subtropical China.

Enrichment Planting in Selectively Logged Rain Forest: A Combined Ecological and Economic Analysis

1994 ◽  
Vol 4 (3) ◽  
pp. 581-592 ◽  
Author(s):  
Peter C. Schulze ◽  
Mark Leighton ◽  
David R. Peart
Keyword(s):  
Economic Analysis ◽  
Rain Forest ◽  
Enrichment Planting

scholarly journals Assessment of Forest Degradation Indices in Mokwa Forest Reserve, Niger State, Nigeria

2020 ◽  
Vol 24 (8) ◽  
pp. 1351-1356
Author(s):  
O.R. Jeminiwa ◽  
M.S. Jeminiwa ◽  
D.M. Taiwo ◽  
M. Dauda ◽  
S.O. Olaotilaaro
Keyword(s):  
Forest Degradation ◽  
Major Effect ◽  
Tree Planting ◽  
Population Increase ◽  
Stepwise Multiple Regression ◽  
Forest Reserve ◽  
Commercial Farming ◽  
Enrichment Planting ◽  
Field Reconnaissance ◽  
The People

Forest degradation has become a major concern in many countries around the world as it has become one of the most debilitating land use crisis in tropical ecosystems. Hence, this study assessed the forest degradation indices in Mokwa forest reserve. Data were collected using structured questionnaires and field reconnaissance survey. Five settlements were selected in and around the forest reserve namely Mokwa, Jangi, Epa, Kpataki and Tswanle. Data were analyzed using descriptive and inferential statistics. Results showed that farming (41.7%) was the main occupation of the people, artisan works (18.8%) and studentship had the least (4.2%). Briquetting of charcoal (20.8%) was the highest causes of forest degradation; commercial farming (18.8%), overgrazing (16.7%) and population increase was the least (4.2%).Global warming (22.9%) was the major effect ofdegradation in the study area, soil erosion (20.8%) and the least was low rainfall (9.4%). Agroforestry practices (27.1%) were recorded as the main mitigation measure for reducing degradation in the area. This was followed by Afforestation and enrichment planting (22.9%), tree planting campaign (18.8%) and the least was forest conservation and management (6.3%). The stepwise multiple regression analysis of the causes with other variables showed that briquetting of charcoal had the highest R2 (0.88), followed by commercial farming R2 (0.84), while population increase had the least R2 (0.57). Nevertheless, sustainable empowerment programs are recommended to boost the livelihood of the rural populace and to reduce the overdependence of the people on the forest reserve. Keywords: forest degradation, enrichment planting, livelihood, briquetting.

scholarly journals Short Communication: Incidence of insect pest on planted Shorea macrophylla at reforestation sites in Gunung Apeng National Park, Sarawak, Malaysia

2022 ◽  
Vol 22 (11) ◽  
Author(s):  
Mogeret Sidi ◽  
Mohd Effendi Wasli ◽  
Elfera Polly ◽  
Aina Nadia Najwa Mohamad Jaffar ◽  
Meekiong Kalu ◽  
...  
Keyword(s):  
Forest Restoration ◽  
National Park ◽  
Short Communication ◽  
Insect Pests ◽  
Insect Pest ◽  
Insect Order ◽  
Enrichment Planting ◽  
The Common

Abstract. Sidi MB, Wasli ME, Polly E, Jaffar ANNM, Kalu M, Sani H, Nahrawi H, Elias H, Omar D. 2021. Short Communication: Incidence of insect pest on planted Shorea macrophylla at reforestation sites in Gunung Apeng National Park, Sarawak, Malaysia. Biodiversitas 22: 5162-5168. Incidence of insect pest in Shorea macrophylla (de Vriese) P.S. Ashton had critical foliage damage in mono planting technique. The main objectives were to assess the foliage damage intensity of planted S. macrophylla by age stands and type of foliage damage. The insect pest attacks the foliage of S. macrophylla was determined. The study site was located at Gunung Apeng National Park (GANP), Sarawak, Malaysia, with planted S. macrophylla in enrichment planting at different years (planted in 2008, 2009, 2010, and 2011 for age stand 6, 5, 4, and 3, respectively). The results showed that the degree of foliage damage decreases with the age stand of S. macrophylla tree. Therefore, foliage damage was suspected to be caused by insect pests. Among the common foliage damages observed was "hole damage" caused by insect order Lepidoptera. Although foliage damage was significant, the severity of the damage will "heal" as the age stand increases. Further investigation on other possible causes of these pest attacks should be initiated to find solutions that may hasten the growth of planted S. macrophylla for forest restoration.

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