The ratio of ligninase to cellulase increased with the reduction of plant detritus input in a coniferous forest in subtropical China

2022 ◽  
Vol 170 ◽  
pp. 104269
Author(s):  
Junjun Wu ◽  
Qian Zhang ◽  
Dandan Zhang ◽  
Wei Jia ◽  
Ji Chen ◽  
...  
Keyword(s):  
Coniferous Forest ◽  
Subtropical China ◽  
Plant Detritus

Heterotrophic nitrification is the predominant NO3 − production pathway in acid coniferous forest soil in subtropical China

2013 ◽  
Vol 49 (7) ◽  
pp. 955-957 ◽  
Author(s):  
Yanchen Zhang ◽  
Jinbo Zhang ◽  
Tianzhu Meng ◽  
Tongbin Zhu ◽  
Christoph Müller ◽  
...  
Keyword(s):  
Forest Soil ◽  
Coniferous Forest ◽  
Heterotrophic Nitrification ◽  
Subtropical China

scholarly journals New insight into the phylogeographic pattern ofLiriodendron chinense(Magnoliaceae) revealed by chloroplast DNA: east–west lineage split and genetic mixture within western subtropical China

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e6355 ◽  
Author(s):  
Aihong Yang ◽  
Yongda Zhong ◽  
Shujuan Liu ◽  
Lipan Liu ◽  
Tengyun Liu ◽  
...  
Keyword(s):  
Chloroplast Dna ◽  
Genetic Resources ◽  
Coniferous Forest ◽  
Genetic Admixture ◽  
Phylogeographic Structure ◽  
Distribution Area ◽  
Eastern Region ◽  
Similar Species ◽  
Subtropical China ◽  
East West

BackgroundSubtropical China is a global center of biodiversity and one of the most important refugia worldwide. Mountains play an important role in conserving the genetic resources of species.Liriodendron chinenseis a Tertiary relict tree largely endemic to subtropical China. In this study, we aimed to achieve a better understanding of the phylogeographical pattern ofL. chinenseand to explore the role of mountains in the conservation ofL. chinensegenetic resources.MethodsThree chloroplast regions (psbJ-petA,rpl32-ndhF, andtrnK5’-matK) were sequenced in 40 populations ofL. chinensefor phylogeographical analyses. Relationships among chloroplast DNA (cpDNA) haplotypes were determined using median-joining networks, and genetic structure was examined by spatial analysis of molecular variance (SAMOVA). The ancestral area of the species was reconstructed using the Bayesian binary Markov Chain Monte Carlo (BBM) method according to its geographic distribution and a maximum parsimony (MP) tree based on Bayesian methods.ResultsObvious phylogeographic structure was found inL. chinense. SAMOVA revealed seven groups matching the major landscape features of theL. chinensedistribution area. The haplotype network showed three clades distributed in the eastern, southwestern, and northwestern regions. Separate northern and southern refugia were found in the Wu Mountains and Yungui Plateau, with genetic admixture in the Dalou Mountains and Wuling Mountains. BBM revealed a more ancient origin ofL. chinensein the eastern region, with a west–east split most likely having occurred during the Mindel glacial stage.DiscussionThe clear geographical distributions of haplotypes suggested multiple mountainous refugia ofL. chinense. The east–west lineage split was most likely a process of gradual genetic isolation and allopatric lineage divergence when the Nanling corridor was frequently occupied by evergreen or coniferous forest during Late Quaternary oscillations. Hotspots of haplotype diversity in the Dalou Mountains and Wuling Mountains likely benefited from gene flow from the Wu Mountains and Yungui Plateau. Collectively, these results indicate that mountain regions should be the main units for conserving and collecting genetic resources ofL. chinenseand other similar species in subtropical China.

Ecological Characteristics of Sub-Alpine Coniferous Forest on Banyabong in Mt. Jiri

2016 ◽  
Vol 7 (4) ◽  
pp. 465 ◽  
Author(s):  
Min-Gi Cho ◽  
Jae-Min Chung ◽  
Hyo-In Im ◽  
Il Noh ◽  
Tae-Woon Kim ◽  
...  
Keyword(s):  
Coniferous Forest ◽  
Ecological Characteristics

Dynamic and seasonal fluctuations of microarthropod complex in coniferous forest soil

Ekologija ◽  
2008 ◽  
Vol 54 (4) ◽  
pp. 201-215 ◽  
Author(s):  
Irena Eitminavičiūtė ◽  
Audronė Matusevičiūtė ◽  
Algirdas Augustaitis
Keyword(s):  
Forest Soil ◽  
Coniferous Forest ◽  
Seasonal Fluctuations

ASSESSMENT OF MAXIMUM INSTANT DISCHARGE OF VARIOUS FREQUENCY AT UNGAUGED MOUNTAINOUS RIVER KHEMCHIK (TUVA REPUBLIC) BASED ON MATHEMATICAL MODELLING

2019 ◽  
Vol 13 (2) ◽  
pp. 36-51 ◽  
Author(s):  
O. M. Makarieva ◽  
N. V. Nesterova ◽  
G. P. Yampolsky ◽  
E. Y. Kudymova
Keyword(s):  
Coniferous Forest ◽  
Frequency Interval ◽  
Time Step ◽  
Model Calculations ◽  
Runoff Formation ◽  
Emergency Situations ◽  
Daily Streamflow ◽  
Standard Methodology ◽  
Maximum Elevation ◽  
Daily Time Step

Abstract: the article presents the results of application of distributed deterministic hydrological model Hydrograph for estimation of maximum discharge values of different frequency at the ungauged catchment of the Khemchik River (Khemchik village, Tuva Republic). The catchment area is 1750 km2 , the average and maximum elevation — 2200 and 3600 m, respectively. Due to the lack of detailed information, a schematization of the catchment and the parameterization of the model are proposed, based on general ideas about the water balance and the processes of runoff formation of the main landscapes — rocky talus, coniferous forest and steppe. Parameters and algorithms are verified based on the results of streamflow modeling at two studied catchments: the Tapsy River — Kara-Khol (302 km2 ) and the Khemchik River — Iyme (25500 km2 ). Modelling of runoff formation processes with daily time step for the Khemchik River — Khemchik village was conducted for the period 1966–2012 using observational data at Teeli meteorological station. For the transition from daily to instant discharges, the dependence of the observed values of instant and daily streamflow at the studied gauges has been applied. On the basis of simulated discharge series, the frequency curve was built and the obtained curve was compared with the calculation data according to the standard methodology SP 33-101-2003 “Determination of the main calculated hydrological characteristics” using the analogue river. Simulated maximum instant discharges for entire frequency interval of up to 1% are 1.3–5 times higher than the values obtained by standard methodology SP 33-101-2003. The results of model calculations is indirectly confirmed by the evidences of regular flooding of the Khemchik village provided by the Ministry of Emergency Situations of the Tuva Republic, which is not predicted by the values obtained by the standard methods.

Meadows of the North-Eastern Altai

2002 ◽  
pp. 22-31 ◽  
Author(s):  
T. V. Maltseva ◽  
N. I. Makunina
Keyword(s):  
Coniferous Forest ◽  
Wet Meadows ◽  
Abies Sibirica ◽  
Dark Coniferous Forest ◽  
Hay Meadows ◽  
The North ◽  
North Eastern ◽  
Humid Area ◽  
River Valleys

The North-Eastern Altai is an ultra-humid area with climax vegetation represented by tall-herb fir (Abies sibirica) dark-coniferous forest. Its meadows belong to the class Molinio-Arrhenatheretea. The typical asso­ciation Aegopodio podagrariae—Dactyletum glomeratae originates in the watershed clearings after climax forests whereas ass. Hyperici perforati—Agrostietum giganteaereplaces the previous one under mowing and grazing. The Molinietalia wet meadows are widespread in the river valleys. The meadows of ass. Cirsio heterophylli—Calama­grostietum langsdorffii occur on wet soils in small depressions and along floodplain mire margins, and ass. Ca­rici ovalis—Deschampsietum cespitosae comprises typical floodplain hay-meadows on moist, nutrient-rich soils.

Die Brutvogelfauna eines Nadelwaldes der nördlichen Voralpen nach dem Sturm Lothar

2017 ◽  
Vol 168 (2) ◽  
pp. 59-66
Author(s):  
Pierre Mollet ◽  
René Hardegger ◽  
Res Altwegg ◽  
Pius Korner ◽  
Simon Birrer
Keyword(s):  
Forest Succession ◽  
Coniferous Forest ◽  
Bird Species ◽  
Individual Species ◽  
Mountain Forest ◽  
Breeding Bird ◽  
Point Counts ◽  
Federal Institute ◽  
Central Switzerland ◽  
Bird Fauna

Breeding bird fauna in a coniferous forest in the northern Prealps after storm Lothar In a 70-hectare large coniferous forest located on the northern edge of the Alps in central Switzerland, Canton of Obwalden, at an altitude of 1260 to 1550 metres above sea level, we surveyed the local breeding bird fauna in 2002 and 2013 by means of point counts as well as additional area searches for rare species. In December 1999, hurricane Lothar caused two large windthrow areas and several smaller areas with scattered throws in the survey range. We found a total of 48 breeding bird species, which is a very diverse species composition for a mountain forest. In the eleven years between surveys, a decline in distribution or abundance was recorded for four species, while seven species showed an increase; a further four species showed no change. For the remaining species, the data sets were too small to reliably estimate changes. A comparison with forest structure data provided by the Swiss Federal Institute of Forest, Snow and Landscape Research WSL revealed that for five bird species, the changes in distribution or abundance could be explained at least partially by forest succession. In order to obtain realistic distribution and abundance values in this kind of breeding bird survey, it is essential to collect large enough samples and to consider the detection probability of each individual species using appropriate statistical methods.

Sign in / Sign up

Export Citation Format

Share Document