scholarly journals Soil Elements Influencing Community Structure in an Old-Growth Forest in Northeastern China

Forests ◽  
2016 ◽  
Vol 7 (12) ◽  
pp. 159 ◽  
Author(s):  
Wei Xu ◽  
Minhui Hao ◽  
Juan Wang ◽  
Chunyu Zhang ◽  
Xiuhai Zhao ◽  
...  
Keyword(s):  
Community Structure ◽  
Northeastern China ◽  
Old Growth ◽  
Old Growth Forest

Decay and nitrogen dynamics of litter from disjunct, congeneric tree species in old-growth stands in northeastern China and Wisconsin

1993 ◽  
Vol 71 (5) ◽  
pp. 693-699 ◽  
Author(s):  
Xiaoyuan Geng ◽  
John Pastor ◽  
Bradley Dewey
Keyword(s):  
Leaf Litter ◽  
Tree Species ◽  
Nitrogen Dynamics ◽  
Northeastern China ◽  
Decay Rates ◽  
Congeneric Species ◽  
Old Growth ◽  
Litter Bag ◽  
Old Growth Forest ◽  
Litter Decay

Decay and nitrogen dynamics of leaf litter from four tree species in an old-growth forest in northeastern China was measured in a litter-bag experiment and compared with decomposition of congeneric species in a Wisconsin old-growth forest with similar climatic regimes and soil. Leaf litter decay in both China and Wisconsin decreased in the order Acer > Populus > Quercus > Pinus and was negatively correlated with initial lignin content (r = 0.961, P < 0.001). Decay was also correlated with other chemical properties depending on locale. In contrast with decay rates, N-immobilization kinetics were not correlated with litter chemistry or comparable between congeners. Principal component analysis showed that almost half the total variation in litter decay is explained by grouping congeneric species according to litter quality. In northern mixed hardwood–conifer forests, generic similarity implies functional similarity in decomposition and nutrient cycling. Key words: decomposition, China, litter, nitrogen, Wisconsin.

Carbon storage, net primary production, and net ecosystem production in four major temperate forest types in northeastern China

2016 ◽  
Vol 46 (2) ◽  
pp. 143-151 ◽  
Author(s):  
Huiying Cai ◽  
Xueying Di ◽  
Scott X. Chang ◽  
Chuankuan Wang ◽  
Baoku Shi ◽  
...  
Keyword(s):  
Net Primary Production ◽  
Northeastern China ◽  
Korean Pine ◽  
Forest Types ◽  
Pine Plantation ◽  
Old Growth ◽  
Organic C ◽  
C Storage ◽  
Old Growth Forest ◽  
Korean Pine Plantation

Temperate forests in northeastern China play a key role in the national carbon (C) budget; however, this role has been poorly quantified. The objective of this study was to quantify C storage, net primary production (NPP), and net ecosystem production (NEP) in four major temperate forest types in northeastern China. The four forest types include a primary mixed broadleaf – Korean pine (Pinus koraiensis Siebold & Zucc.) old-growth forest and three mid-aged regenerating forests, i.e., a secondary birch (Betula platyphylla Sukaczev) forest, a Korean pine plantation, and a Dahurian larch (Larix gmelinii (Rupr.) Rupr.) plantation. Total C storage differed significantly among the four forest types, with the highest storage (315.4 t C·ha−1) in the old-growth forest. Soil organic C accounted for 55%–70% of the ecosystem C, whereas vegetation C accounted for 28%–43% of the ecosystem C. Soil organic C storage in the two plantations was significantly lower than that in old-growth and secondary birch forests. The allocation (aboveground and belowground) of NPP, but not the total NPP, differed significantly among the forest types. Litterfall (44%–60%) and fine root production (43%–47%) contributed the largest proportion of the aboveground and belowground NPP, respectively. The highest NEP was in the Korean pine plantation (328.0 g C·m−2·year−1), followed by the old-growth (311.9 g C·m−2·year−1) and secondary birch (231.1 g C·m−2·year−1) forests, with the lowest NEP in the Dahurian larch plantation (187.9 g C·m−2·year−1). These results suggest that the major forest types are currently C sinks and Korean pine plantation establishment can be a promising approach for increasing C sequestration in northeastern China.

scholarly journals The Effect of Human Activity on Ant Species (Hymenoptera: Formicidae) Richness at the Mont St. Hilaire Biosphere Reserve, Québec

2005 ◽  
Vol 119 (1) ◽  
pp. 38
Author(s):  
Jonathan Z. Shik ◽  
André Francoeur ◽  
Christopher M. Buddle
Keyword(s):  
Species Richness ◽  
Community Structure ◽  
Human Activity ◽  
Biosphere Reserve ◽  
Lasius Niger ◽  
Old Growth ◽  
Tetramorium Caespitum ◽  
Old Growth Forest ◽  
Disturbed Habitats ◽  
Unique Species

The ant (Hymenoptera: Formicidae) fauna of the Mont St. Hilaire Biosphere Reserve, Québec, was surveyed in 2002 and 2003. Although overall species richness was high, 10 of 40 total ant species collected were limited to anthropogenically disturbed habitats within the reserve. While only 2 of these 10 species (Tetramorium caespitum (L.) and Lasius niger (L.)) can definitively be considered introduced, areas altered by human activity (representing a small fraction of the reserve’s total area) possess nearly as many unique species as the reserve’s old-growth forest. Although further research will be necessary to determine the consequences of such changes in community structure, this study shows the importance of specifying the extent of biodiversity surveys within protected habitats to more accurately monitor the effectiveness of conservation efforts.

Tradable Disturbance Permits for Old-growth Forest Conservation: Experimental Evaluation of Implementation Options

2017 ◽  
Vol 7 (1-2) ◽  
pp. 73-107
Author(s):  
Orsolya Perger ◽  
Curtis Rollins ◽  
Marian Weber ◽  
Wiktor Adamowicz ◽  
Peter Boxall
Keyword(s):  
Experimental Evaluation ◽  
Forest Conservation ◽  
Old Growth ◽  
Old Growth Forest

Old-growth forest reserves in Slovenia: the past, present, and future

2012 ◽  
Vol 163 (6) ◽  
pp. 240-246 ◽  
Author(s):  
Thomas A. Nagel ◽  
Jurij Diaci ◽  
Dusan Rozenbergar ◽  
Tihomir Rugani ◽  
Dejan Firm
Keyword(s):  
Stand Structure ◽  
Growth Conditions ◽  
Ecosystem Functions ◽  
Future Research ◽  
Old Growth ◽  
Forest Reserves ◽  
The Past ◽  
Old Growth Forest ◽  
Forest Remnants ◽  
Basic Characteristics

Old-growth forest reserves in Slovenia: the past, present, and future Slovenia has a small number of old-growth forest remnants, as well as many forest reserves approaching old-growth conditions. In this paper, we describe some of the basic characteristics of these old-growth remnants and the history of their protection in Slovenia. We then trace the long-term development of research in these old-growth remnants, with a focus on methodological changes. We also review some of the recent findings from old-growth research in Slovenia and discuss future research needs. The conceptual understanding of how these forests work has slowly evolved, from thinking of them in terms of stable systems to more dynamic and unpredictable ones due to the influence of natural disturbances and indirect human influences. In accordance with this thinking, the methods used to study old-growth forests have changed from descriptions of stand structure to studies that address natural processes and ecosystem functions.

Old-growth forest carbon sinks overestimated

Nature ◽  
2021 ◽  
Vol 591 (7851) ◽  
pp. E21-E23
Author(s):  
Per Gundersen ◽  
Emil E. Thybring ◽  
Thomas Nord-Larsen ◽  
Lars Vesterdal ◽  
Knute J. Nadelhoffer ◽  
...  
Keyword(s):  
Forest Carbon ◽  
Carbon Sinks ◽  
Old Growth ◽  
Old Growth Forest
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