New patterns of establishment and growth of Picea , Abies and Betula tree species in subalpine forest gaps of Jiuzhaigou National Nature Reserve, Sichuan, southwestern China in a changing environment

2015 ◽  
Vol 356 ◽  
pp. 84-92 ◽  
Author(s):  
Carla C. Bossard ◽  
Yutao Cao ◽  
Jiayuan Wang ◽  
Ashley Rose ◽  
Ya Tang
Keyword(s):  
Picea Abies ◽  
Tree Species ◽  
Nature Reserve ◽  
Southwestern China ◽  
Subalpine Forest ◽  
Changing Environment ◽  
Forest Gaps ◽  
National Nature Reserve

scholarly journals Seasonal Pattern In the High-Elevation Fluvial Travertine From the Jiuzhaigou National Nature Reserve, Sichuan, Southwestern China

2017 ◽  
Vol 87 (3) ◽  
pp. 253-271 ◽  
Author(s):  
Stefano Lugli ◽  
Ya Tang ◽  
Matteo Reghizzi ◽  
Xue Qiao ◽  
B. Charlotte Schreiber ◽  
...  
Keyword(s):  
Nature Reserve ◽  
Seasonal Pattern ◽  
High Elevation ◽  
Southwestern China ◽  
National Nature Reserve

scholarly journals Comparison of humus form state in the beech and spruce parts of the Žákova hora National Nature Reserve

2019 ◽  
Vol 51 (Special Issue) ◽  
pp. 29-37 ◽  
Author(s):  
V. Podrázský
Keyword(s):  
Spatial Structure ◽  
Species Composition ◽  
Tree Species ◽  
Nature Reserve ◽  
Soil Layer ◽  
Natural Forest ◽  
Natural Forests ◽  
Tree Species Composition ◽  
Humus Forms ◽  
National Nature Reserve

The paper summarises main ideas concerning the structure of natural forest ecosystems at middle altitudes and documents the changes of humus forms and their chemistry in the natural forest of Žákova hora National Nature Reserve, in typical selected parts with different tree species composition: European beech – Norway spruce. The species composition, age and spatial structure are discussed and analysis of the uppermost soil layer is done in particular parts of the natural forest regeneration cycle, of different stages respectively. We compared the amount and layer composition of surface humus and basic pedochemical characteristics of holorganic and upper mineral horizons. The results document changes in the character of humus forms as a consequence of the tree species change. On the contrary, a high portion of uncertainty as for the species, age and spatial structure follows from discussion about the structure of natural forests at middle altitudes.

scholarly journals Gap Structure and Regeneration in the Mixed Old-Growth Forests of National Nature Reserve Sitno, Slovakia

Forests ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 81 ◽  
Author(s):  
Peter Jaloviar ◽  
Denisa Sedmáková ◽  
Ján Pittner ◽  
Lucia Jarčušková Danková ◽  
Stanislav Kucbel ◽  
...  
Keyword(s):  
Species Composition ◽  
Fagus Sylvatica ◽  
Tree Species ◽  
Natural Regeneration ◽  
Nature Reserve ◽  
Oak Forest ◽  
Old Growth ◽  
Tree Species Composition ◽  
Natural Processes ◽  
National Nature Reserve

Forest management mimicking natural processes represents an approach to maintain mixed, uneven-aged stands at small spatial scales. The reliance on natural processes, especially on natural regeneration leads to the use of gap-based regeneration as a fundamental silvicultural technique. As a baseline for such management, we investigated mixed forest in unmanaged National Nature Reserve Sitno in the Western Carpathians, which harbours extraordinary diversity on a rather small scale. To quantify the impact of gaps on gap-filling processes and to assess the role they play in recently observed changes in tree species composition we established a large (2.5 ha) permanent research plot and surveyed the status of natural regeneration, forest structure, tree species composition, and disturbance regime. Our research highlights the long-term and contemporary difficulties in the establishment of Quercus petraea (Matt.) Liebl and Fagus sylvatica (L.). Based on the provided evidence, the native tree species diversity in one of the few preserved old-growth multi-species beech-oak forest remnants is not likely to persist, what could have many implications for future ecosystem functioning. Our results suggest that variation in gap size is an important factor contributing to composition of tree species composition of natural regeneration. The recent intermediate-scale disturbance pattern dominating the old-growth beech-oak forest is beneficial to canopy recruitment of species less shade-tolerant than Fagus sylvatica, as Acer pseudoplatanus (L.), Acer platanoides (L.), and Fraxinus excelsior (L.). We discuss possible factors behind observed shifts in tree species composition and limitations for application of gap dynamics to forest practice in managed beech-oak forest systems. Overall, results of this study may help to design silvicultural measures promoting mixed-species forests to deliver a range of desired ecosystem services.

Reinforcement Project and Breeding Cases of Introduced Endangered Red-Crowned Cranes Grus japonensis in Yancheng National Nature Reserve, China

2020 ◽  
Vol 19 (1) ◽  
pp. 93
Author(s):  
Peng Xu ◽  
Hao Chen ◽  
Duoying Cui ◽  
Chunrong Li ◽  
Guoyuan Chen ◽  
...  
Keyword(s):  
Nature Reserve ◽  
National Nature Reserve ◽  
Grus Japonensis
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