scholarly journals Temperature response of soil carbon decomposition depends strongly on forest management practice and soil layer on the eastern Tibetan Plateau

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Kaijun Yang ◽  
Ruoyang He ◽  
Wanqin Yang ◽  
Zhijie Li ◽  
Liyan Zhuang ◽  
...  
2019 ◽  
Vol 9 (2) ◽  
pp. 85-92
Author(s):  
Monisari Djamal ◽  
Hardjanto . ◽  
Yulius Hero

Sustainable private forest management is an opportunition sustainable forest development in Indonesia. However, sustainable production of private forest management has not been known, because characteristics of private forest are different with state forest. This research aims to determine a relevant criteria and indicator of sustainable production on private forest management, case of Barru District. This research used descriptive explorative approach and quantitative-qualitative analysis. Criteria and indicator of sustainable production on Indonesia Community Based Forest Management was used as a reference to examine suitability of the standard on private forest management practice. The standards of sustainable production on sustainable private forest management consists of three criteria, namely: (1) sustainability of resources, the indicators were clearly land rights/status and boundaries, land cover change, intensity of planting, maintenance, and harvesting, (2) sustainability of yield, the indicator is infrastructure of forest management, and (3) sustainability of enterprise, the indicators were,market certainty, market accessibility, market information system, and contribution to social and economic improvement for local communities.Keywords: criteria, indicator, private forest, sustainable production.


PLoS ONE ◽  
2017 ◽  
Vol 12 (10) ◽  
pp. e0186053 ◽  
Author(s):  
Ruoyang He ◽  
Kaijun Yang ◽  
Zhijie Li ◽  
Martin Schädler ◽  
Wanqin Yang ◽  
...  

2020 ◽  
Vol 344 ◽  
pp. 47-57
Author(s):  
Alfonso SUÁREZ-ISLAS ◽  
Juan CAPULÍN-GRANDE ◽  
José J. MATEO-SÁNCHEZ

As a contribution to ex-situ conservation and production recovery of the valuable timber tree species Dalbergia palo-escrito Rzed. & Guridi-Gómez, enrichment planting was undertaken in a coffee plantation at 830 m above sea level in the east of the State of Hidalgo, Mexico. The purpose of this study was to assess the growth and health status of this species in order to put forward forest management recommendations. Average growth at 11 years of age (n = 56) was as follows: normal diameter, 13.2 ± 2.9 cm; total height, 10.9 ± 1.9 m. These values represent a mean annual increase of 1.2 cm/year in diameter and 1.0 m/year in height. Significant statistical differences in diameter growth (P = 0.0001) and height growth (P = 0.003) were observed as a function of crown position; growth, both in diameter and height, was highest in trees with emergent crowns in comparison with poorly lit trees. An association was also found concerning infestation by Struthanthus sp. mistletoe: differences in diameter growth (P = 0.002) were found between trees with mild infestation in comparison with healthy trees, which showed more growth. On the other hand, no height growth differences were detected (P = 0.102). Diameter and height growth were comparable to other commercially valuable species of fine Dalbergia timber on the international market, such as Dalbergia sissoo in India and Dalbergia retusa in mixed plantations in Costa Rica. The study suggests pruning out the mistletoe as a control strategy is a recommended forest management practice, as well as releasing poorly illuminated trees from competition and preserving the shade canopy of other native species.


1970 ◽  
Vol 15 (2) ◽  
pp. 53-61 ◽  
Author(s):  
R.A. Mandal ◽  
P. Van Laake

Though community forests have a vital role in environmental services and sustainable development in developing countries such as in India and Nepal, the credit cannot yet to be claimed under the Clean Development Mechanism (CDM). It is due to difficulties of assessing the biomass and carbon storage in the community forests for monitoring and verification. However, forest carbon monitoring is possible by the use of advanced technology such as Leaf Area Index (LAI) that is derived from hemispherical photographs using Gap Light Analyser by establishing the relation with the biophysical characteristics of the vegetation. Therefore, the study stepped towards the assessment of carbon sequestration in community forests using LAI. To meet research tasks, which were to establish the relationship between biomass and LAI and explore environmental benefit of community forest management approach, 70 samples from Dhaili and 73 samples from Guna Chautara community forests were collected using stratified random sampling. The sample data included girth, height and canopy photos. Canopy photographs were taken by use of hemispherical cameras. After biomass was estimated using allometric equations, LAI values from canopy photos were analyzed by the use of Gap Light Analyser. Furthermore, for relationship development, the linear regressions analyses were carried out and CDM criteria were incorporated with forest management practice. Main outputs of the research were carbon sequestration model based on LAI and justification of CDM criteria with community forest management practice. Key words: Carbon Sequestration, Leaf Area Index (LAI), Clean Development Mechanism (CDM), Community Forest, Gap Light Analyser, Hemispherical photographs Banko Janakari Vol.15(2) 2005 pp53-61


1999 ◽  
Vol 16 (2) ◽  
pp. 89-95 ◽  
Author(s):  
Leigh Ann Boardman ◽  
Richard H. Yahner

Abstract The effects of even-aged forest management on wildlife have been studied extensively in the northeastern United States. The Pennsylvania Bureau of Forestry recently adopted a new forest management practice termed "even-aged reproduction stands with reservation guidelines," hereafter termed EAR stands, which is intended to replace clearcutting as the primary method of even-aged forest management. We examined wildlife communities (breeding birds and small mammals) in 16 stands (8 EAR stands and 8 reference) in central Pennsylvania from February to October 1995. Species richness and abundances of total birds, foraging guilds, and individual species did not differ (P > 0.05) between large (> 30) and small (< 20 ha) EAR stands. Bird species richness was similar between EAR and reference stands, but abundances of total birds, ground-shrub foragers,common yellowthroats (Geothylpis trichas), and chipping sparrows (Spizella passerina) were significantly higher in EAR than in reference stands. Conversely, abundances of canopy-sallier foragers and red-eyed vireos (Vireo olivaceus) were considerably higher (P < 0.05) in reference than EAR stands. Abundance of the white-footed mouse (Peromyscus leucopus) was significantly (P < 0.01) higher in small compared to large EAR stands but was similar between EAR and reference stands. Because of the concerns about forest fragmentation, we recommend that EAR stands be less than 40 ha in size, which is typical of those created by the Pennsylvania Bureau of Forestry. Overstory trees and snags in EAR stands serve as important substrates for breeding birds. Furthermore, EAR guidelines promote regeneration and growth of a dense layer of vegetation near ground level which is beneficial to wildlife. North. J. Appl. For. 16(2):89-95.


Agriculture ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 156 ◽  
Author(s):  
Rafaella Campos ◽  
Gabrielle Ferreira Pires ◽  
Marcos Heil Costa

Western Bahia, part of a large Brazilian agricultural frontier, is located mainly in fragile, sandy soils in a tropical seasonal climate with dry winters, characteristics that facilitate soil carbon loss. This study evaluates whether rainfed and irrigated agriculture in Western Bahia were able to sequester carbon and re-establish the soil organic carbon content (SOCC) lost due to land use change. Between 2010 and 2018, a total of 5469 soil samples were collected in the 0.00–0.20 m soil layer from nine farms and were used to calculate the annual rate of SOCC variation. The most recent SOCC measured in plots where land use change occurred 20 years ago was compared with the SOCC measured in areas of native vegetation (Cerrado). Results showed that (i) irrigated sandy agricultural lands replenished SOCC to the level observed in native vegetation by 20 years after a land use change event and are still capturing carbon at a significant rate, (ii) clayey, rainfed agricultural lands also sequester carbon, but these soils are not representative of the region, and (iii) sandy, rainfed agricultural lands, the predominant soil type and management practice in Western Bahia, are not a sink of CO2.


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