scholarly journals Factors influencing the spatial pattern of the ash content of bog birch forest litter

2011 ◽  
Vol 3 ◽  
pp. 99-104 ◽  
Author(s):  
O.P. Sekretenko ◽  
T.T. Efremova ◽  
A.F. Avrova ◽  
S.P. Efremov
Keyword(s):  
Spatial Pattern ◽  
Forest Litter ◽  
Ash Content ◽  
Birch Forest ◽  
Factors Influencing

The spatial pattern of farming and factors influencing it during the Peiligang culture period in the middle Yellow River valley, China

2017 ◽  
Vol 62 (23) ◽  
pp. 1565-1568 ◽  
Author(s):  
Can Wang ◽  
Houyuan Lu ◽  
Wanfa Gu ◽  
Naiqin Wu ◽  
Jianping Zhang ◽  
...  
Keyword(s):  
Spatial Pattern ◽  
Yellow River ◽  
River Valley ◽  
Culture Period ◽  
Yellow River Valley ◽  
Factors Influencing

Factors influencing humus forms and forest litter properties in the mid-mountains under temperate climate of southwestern Poland

Geoderma ◽  
2014 ◽  
Vol 230-231 ◽  
pp. 265-273 ◽  
Author(s):  
Beata Labaz ◽  
Bernard Galka ◽  
Adam Bogacz ◽  
Jaroslaw Waroszewski ◽  
Cezary Kabala
Keyword(s):  
Forest Litter ◽  
Temperate Climate ◽  
Humus Forms ◽  
Factors Influencing ◽  
Litter Properties

scholarly journals EVALUASI POLA RUANG BERBASIS KERAWANAN BANJIR DI KABUPATEN PIDIE

2015 ◽  
Vol 17 (3) ◽  
pp. 130 ◽  
Author(s):  
Achmad Yamani ◽  
Ernan Rustiadi ◽  
Widiatmaka Widiatmaka
Keyword(s):  
Land Use ◽  
Spatial Pattern ◽  
Land Use Planning ◽  
Forest Cover ◽  
Flood Hazard ◽  
Multicriteria Analysis ◽  
Conservation Area ◽  
Flood Vulnerability ◽  
Factors Influencing ◽  
Hazard Area

Pidie is one of the districts in Aceh Province that has been suffering from flooding. Frequent disasters, especially flooding associated with various causative factors, need mitigation efforts. An appropriate land use planning by considering the risk aspects especially in flood is an important step. Objectives of this study are to determine the factors influencing the flood hazard, to map the areal distribution vulnerable to flood, to analyze the relations of land use in the flood hazard area, and to analyze the relations between the planned spatial pattern and the flood hazard area. ,Multicriteria analysis was used to determine the factors influencing the flood hazard. Spatial analysis was used in mapping the class of flood hazard, the relations of land use in the flood hazard area, and the relations between the planned spatial pattern and the flood hazard area. The results show that the main factors influencing flood vulnerability are land use/cover (0.408), rainfall (0.266), and slope (0.184). Based on the classification of flood vulnerability, the area can be divided into more vulnerable (37.75 %), less vulnerable (30 %), and mildly vulnerable (22.76 %). The vulnerability classes of the land use/cover are: less vulnerable (99.99 %) and more vulnerable (97.57 %) dominated by forest cover; mildly vulnerable (51.07%) and vulnerable (92.65%) dominated by mixed farming; and very vulnerable (97%) dominated by settlement. The flood vulnerability of the planned spatial pattern can be classified as follows: 95.44 % of the conservation area is dominated by less vulnerable and more vulnerable, while 71.20 % of the cultivation area can be categorized into mildly vulnerable, vulnerable and very vulnerable.

scholarly journals Heating Value and Ash Content of Downy Birch Forest Biomass

2017 ◽  
Vol 105 ◽  
pp. 1302-1308 ◽  
Author(s):  
Janka Dibdiakova ◽  
Liang Wang ◽  
Hailong Li
Keyword(s):  
Forest Biomass ◽  
Ash Content ◽  
Birch Forest ◽  
Heating Value ◽  
Downy Birch

scholarly journals Using Moran's I and GIS to study the spatial pattern of forest litter carbon density in a subtropical region of southeastern China

2014 ◽  
Vol 11 (8) ◽  
pp. 2401-2409 ◽  
Author(s):  
W. J. Fu ◽  
P. K. Jiang ◽  
G. M. Zhou ◽  
K. L. Zhao
Keyword(s):  
Spatial Pattern ◽  
Spatial Patterns ◽  
Forest Ecosystem ◽  
Forest Litter ◽  
Zhejiang Province ◽  
Moran’S I ◽  
Carbon Density ◽  
Southeastern China ◽  
Moran's I ◽  
Density Values

Abstract. Spatial pattern information of carbon density in forest ecosystem including forest litter carbon (FLC) plays an important role in evaluating carbon sequestration potentials. The spatial variation of FLC density in the typical subtropical forests in southeastern China was investigated using Moran's I, geostatistics and a geographical information system (GIS). A total of 839 forest litter samples were collected based on a 12 km (south–north) × 6 km (east–west) grid system in Zhejiang province. Forest litter carbon density values were very variable, ranging from 10.2 kg ha−1 to 8841.3 kg ha−1, with an average of 1786.7 kg ha−1. The aboveground biomass had the strongest positive correlation with FLC density, followed by forest age and elevation. Global Moran's I revealed that FLC density had significant positive spatial autocorrelation. Clear spatial patterns were observed using local Moran's I. A spherical model was chosen to fit the experimental semivariogram. The moderate "nugget-to-sill" (0.536) value revealed that both natural and anthropogenic factors played a key role in spatial heterogeneity of FLC density. High FLC density values were mainly distributed in northwestern and western part of Zhejiang province, which were related to adopting long-term policy of forest conservation in these areas, while Hang-Jia-Hu (HJH) Plain, Jin-Qu (JQ) Basin and coastal areas had low FLC density due to low forest coverage and intensive management of economic forests. These spatial patterns were in line with the spatial-cluster map described by local Moran's I. Therefore, Moran's I, combined with geostatistics and GIS, could be used to study spatial patterns of environmental variables related to forest ecosystem.

scholarly journals Ascophyllum nodosum Application and Pre-Sowing Stimulation with Low-Frequency Magnetic Field as Factors Influencing Oat Grains (Avena sativa L.) Composition

Agronomy ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1164
Author(s):  
Barbara Drygaś ◽  
Joanna Depciuch ◽  
Grzegorz Zaguła ◽  
Czesław Puchalski
Keyword(s):  
Magnetic Field ◽  
Avena Sativa ◽  
Copper Content ◽  
Low Frequency ◽  
Ascophyllum Nodosum ◽  
Ash Content ◽  
Factors Influencing ◽  
Frequency Magnetic Field ◽  
Sowing Seed ◽  
Stimulation Of

In this study, we tested the influence of two experimental factors on the composition of oat grain Avena sativa under the conditions of a three-year field study. The first factor (factor A) consisted of an Ascophyllum nodosum application, an organism classified in the Chromista kingdom, class Phaeophyceae, order Fucales; the second factor was the pre-sowing stimulation of seeds with a low-frequency magnetic field with known parameters. The basic organic components and mineral composition of the grain were tested. It was determined, among other things, that fertilization with algae leads to reduced ash content in oat grain, increased content of sodium, reduced calcium and iron content, and increased content of starch components (amyloses and amylopectins). The application of pre-sowing seed stimulation resulted in increased copper content in the progeny. No significant interactions could be observed between the factors in forming the chemical composition of oat grain.

Factors Influencing the Distribution of Overwintering Ambrosia Beetles, Trypodendron lineatum (Oliv.)

1961 ◽  
Vol 93 (9) ◽  
pp. 746-759 ◽  
Author(s):  
E. D. A. Dyer ◽  
J. M. Kinghorn
Keyword(s):  
British Columbia ◽  
Stand Density ◽  
Forest Litter ◽  
Ambrosia Beetle ◽  
Forest Edges ◽  
Trypodendron Lineatum ◽  
Ambrosia Beetles ◽  
Factors Influencing ◽  
Coastal British Columbia ◽  
Selection Of

Previous work by Kinghorn and Chapman (1959) has shown that in coastal British Columbia, the ambrosia beetle Trypodendron lineatum hibernates in the forest litter or duff at various distances within forest edges in the vicinity of brood logs. It was pointed out that further study was required to determine the characteristics of the optimum hibernation sites. It was mentioned that stand density, shade, aspect, slope, and the nature of the duff might be factors controlling the selection of the place of hibernation. The base of trees and the relatively deeper duff, characteristic of this situation, was reported to be the location of the larger populations of hibernating beetles although the level of population was found to vary greatly both from tree to tree and in depth within different forest edges.

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