GROSS CALORIC VALUES OF DOMINANT SPECIES AND LITTER LAYER IN MID-MONTANE MO IST EVERGREEN BROAD-LEAVED FOREST IN AILAO MOUNTAIN AND IN TROPICAL SEASON RAIN FOREST IN XISHUANGBANNA, YUNNAN, CHINA

2007 ◽  
Vol 31 (3) ◽  
pp. 457-463
Author(s):  
HUANG Yu-Hui ◽  
◽  
◽  
◽  
GUAN Li-Li ◽  
...  
Keyword(s):  
Rain Forest ◽  
Dominant Species ◽  
Litter Layer ◽  
Broad Leaved Forest ◽  
Ailao Mountain ◽  
Leaved Forest

scholarly journals Litter Ecohydrological Function Characteristics of Three Typical Plant Communities in The Core Area of Five-Hundred-Meter Aperture Spherical Radio Telescope from Guizhou, China

2021 ◽  
Author(s):  
Jianli Zhang ◽  
Ting Zhang ◽  
Lihua Pu ◽  
Lingbin Yan ◽  
Guojun Cai ◽  
...  
Keyword(s):  
Water Absorption ◽  
Plant Communities ◽  
Coniferous Forest ◽  
Water Holding Capacity ◽  
Litter Layer ◽  
Broad Leaved Forest ◽  
Maximum Water ◽  
And Storage ◽  
Water Holding ◽  
Leaved Forest

Abstract Taking the litter layer of three typical plant communities (broad-leaved forest, coniferous forest, and shrubs) as the research object, this study analyzed the hydrological function characteristics of the litter layers of different typical plant communities using the indoor immersion method in order to reveal the effects of the traits of the litter layer on the hydrological functions of typical plant communities in the core area. The results showed that: (1) the litter reserve change trend decreased in order as follows: broad-leaved forest (13.31 ± 1.54 t/hm2) > shrubs (12.62 ± 2.34 t/hm2) > coniferous forest (11.36 ± 1.43 t/hm2). The coniferous forest and shrub litter reserves increased significantly with the increase of decomposition degree (F = 19.36, P < 0.01; and F = 9.19, P < 0.01, respectively), while the broad-leaved forest litter reserves decreased first and then increased significantly with the increase of decomposition degree (F = 25.70, P < 0.01); (2) the litter natural moisture content change trends were as follows: shrubs (34.09 ± 4.31 t/hm2) > broad-leaved forest (31.32 ± 1.76 t/hm2) > coniferous forest (29.48 ± 7.02 t/hm2). The change trends of the maximum water-holding capacity, maximum interception amount, maximum interception rate, effective interception amount, and effective interception rate were in descending order as follows: broad-leaved forest > shrubs > coniferous forest. The maximum water-holding capacity, maximum interception amount, and effective interception amount of litter rose with the increase of decomposition degree. The broad-leaved forest community litter layer had the strongest rainfall interception function and the best hydrological service functions. The interception function was stronger with the increase of the decomposition degree of the litter layer; (3) the water-holding and water-releasing capacity variation of the litter layers manifested as reversed “J” features for the three typical plant communities. The water-holding capacity of different plant community litter layers (Qct) was significantly positively correlated with time (t) (P < 0.01), and the equation was Qct = b + alnt, whereas the water-releasing capacity of different plant community litter layers (Qst) was significantly positively correlated with time (t) (P < 0.01), and the equation was Qst = a t b; and (4) the water absorption and release rates of the litter layers had four periods. The water absorption rate (v) was significantly negatively correlated with time (t) (P < 0.01), and the equation was v = a t− b, while the water release rate was the same. The water absorption and release rates differed by one order of magnitude in the first 5 min, exhibiting the greatest regulation and storage function, while the rate differed by only 2.1–4.5 times during the last three periods. This shows that the litter layer has the strongest rainfall regulation and storage function for only a short period of time before declining.

The Nitrogen Mineralization of Five Forest Types Soil in Eastern Slope of Gaoligongshan Mountains

2014 ◽  
Vol 1073-1076 ◽  
pp. 222-228
Author(s):  
Ming Qian Yu ◽  
Guang Tao Meng ◽  
Li Ping He ◽  
Ning Yun Li ◽  
Gui Xiang Li ◽  
...  
Keyword(s):  
Nitrogen Mineralization ◽  
Rain Forest ◽  
Inorganic Nitrogen ◽  
Forest Types ◽  
Undisturbed Soil ◽  
N Content ◽  
Montane Rain Forest ◽  
Broad Leaved Forest ◽  
Leaved Forest

Sequential soil coring and in situ exposure of largely undisturbed soil columns technique was used to study the nitrogen mineralization of five forest types soils in the east side of Gaoligongshan mountains, which were Dry-Hot Vally (D), Montane Rain Forest (MR), Monsoon Evergreen Broad-leaved Forest (M), the Mid-Montane Humid Evergreen Broad-leaved Forest (H), Tsuga Forest (Ts). The results indicated that NH4+-N content decreased for all the forest types soil after four months training, the order of decrease proportion is monsoon evergreen broad-leaved forest (84.1%)> montane rain forest (69.3%)> the mid-montane humid evergreen broad-leaved forest (34.7%)> dry-hot vally (8.7%)> tsuga forest (7.3%). And NO3--N content increased for the soils, the increasing multiples is tsuga forest (39.0 times)> dry-hot vally (18.8 times)> the mid-montane humid evergreen broad-leaved forest (4.7 times)> monsoon evergreen broadleaf forest (4.0 times) > montane rainforest (2.8 times). We conclude that NH4+-N is the main form of inorganic nitrogen in forest soil, which is the main reason of changing the soil nitrogen mineralization and mineralization rate.

Community characteristics, species diversity and management of middle-mountain moist evergreen broad-leaved forest in the Ailao Mountains, Southwestern China

2001 ◽  
Vol 7 (1) ◽  
pp. 34 ◽  
Author(s):  
Wen Yao Liu ◽  
John E. D. Fox ◽  
Zai Fu Xu
Keyword(s):  
Species Diversity ◽  
Forest Type ◽  
Management Strategies ◽  
Lower Latitude ◽  
Community Characteristics ◽  
Broad Leaved Forest ◽  
Endemic Flora ◽  
Trees And Shrubs ◽  
Ailao Mountain ◽  
Leaved Forest

Middle-mountain, moist, evergreen broad-leaved forest is an important forest type of Yunnan Province, SW China. Species composition, vegetation structure, physiognomy, diversity and phenology of this forest in Ailao Mountain were surveyed. The forest has characteristics common to subtropical, evergreen broad-leaved forest elsewhere in China. It also has local features associated with the middle-mountain location at lower latitude and higher altitude, including relatively high humidity and mild temperatures all year. The forest is dominated by species unique to Yunnan. There is a well-developed bamboo layer, fewer megaphanerophytes, more microphylls, more lianas and more epiphytes than in other subtropical evergreen broad-leaved forests. Floristically, elements of tropical, temperate and endemic flora comprise 54, 43 and 3% of the genera, while tropical, temperate and endemics account for 22, 38 and 40% of the species in the forest. Two-thirds of the trees and shrubs have leaves with drip tips in varying degree. The phenological rhythm of the forest is similar to that of a tropical forest, with plants flowering and bearing fruits almost throughout the year. Species diversity is richer than that of other evergreen broad-leaved forests in central Yunnan. Some management strategies and priorities for this forest are suggested.

Spatial patterns of dominant species in a subtropical evergreen broad-leaved forest in Jiulian Mountain Jiangxi Province, China

2012 ◽  
Vol 32 (9) ◽  
pp. 2729-2737
Author(s):  
范娟 FAN Juan ◽  
赵秀海 ZHAO Xiuhai ◽  
汪金松 WANG Jinsong ◽  
张春雨 ZHANG Chunyu ◽  
何俊 HE Jun ◽  
...  
Keyword(s):  
Spatial Patterns ◽  
Dominant Species ◽  
Jiangxi Province ◽  
Broad Leaved Forest ◽  
Leaved Forest

Spatial point patterns of dominant species by individuals and biomass in a subtropical evergreen broad-leaved forest

2016 ◽  
Vol 36 (4) ◽  
Author(s):  
胡砚秋 HU Yanqiu ◽  
李文斌 LI Wenbin ◽  
崔佳玉 CUI Jiayu ◽  
苏志尧 SU Zhiyao
Keyword(s):  
Dominant Species ◽  
Point Patterns ◽  
Spatial Point ◽  
Spatial Point Patterns ◽  
Broad Leaved Forest ◽  
Leaved Forest

scholarly journals The Spatial Pattern of the Upper Limit of Montane Deciduous Broad-Leaved Forests and Its Geographical Interpretation in the East Monsoon Realm of China

Forests ◽  
2021 ◽  
Vol 12 (9) ◽  
pp. 1225
Author(s):  
Jing Wang ◽  
Baiping Zhang ◽  
Yonghui Yao
Keyword(s):  
Spatial Pattern ◽  
Cold Tolerance ◽  
Dominant Species ◽  
Climatic Factors ◽  
Mountain Ranges ◽  
Upper Limit ◽  
Qinling Mountain ◽  
Broad Leaved Forest ◽  
Precipitation Seasonality ◽  
Leaved Forest

Montane deciduous broad-leaved forests (MDB) are mainly distributed in the east monsoon realm of China. The upper limit of MDB significantly varies from mountain to mountain. However, the spatial pattern of the upper limit of MDB and its underlying drivers are still unknown. In this study, we conducted hierarchical multiple regression to quantify the effect of climatic factors, peak elevation, and cold tolerance of dominant species on the geographical distribution of the upper limit of MDB on 75 mountains in the east monsoon realm of China. The results show that: (1) the upper limit of MDB in the east monsoon realm of China, 2800 m, is the highest in Taibai peak of the Qinling mountain ranges, from where it tends to decrease both northward and southward. (2) The upper limit of MDB on the mountains with climatic treeline is mainly affected by climatic factors, the minimum temperature of the coldest month (MinT), and the precipitation seasonality (PS), with an R2 of 0.733. (3) The upper limit of MDB on both temperate and subtropical mountains without climatic treeline is affected by MinT, PS, peak elevation, and cold tolerance of dominant species together, with an R2 of 0.793 and 0.748, respectively. (4) The dominant species of the upper limit of MDB significantly differ temperate and subtropical ranges, the former of which is mainly in the genus Betula, and the latter of which is in the genus Quercus. The upper limit of MDB with the genus Fagus as dominant species is only distributed in the mountains towards the south of the Qinling mountain ranges. (5) The warmth index (WI) at the upper limit of deciduous broad-leaved forest on the mountains with climatic treeline is about 60 °C month, which is lower than that at the northernmost boundary of the latitudinal distributed deciduous broad-leaved forest (90 °C month). Our study revealed the spatial pattern and geographical drivers of the upper limit of MDB, improved our understanding of differences in MDB vegetation among different mountain ranges, and provided climatic correlates for predicting the dynamics of the upper limit of MDB under climate change.

Using digital cameras for comparative phenological monitoring in an evergreen broad-leaved forest and a seasonal rain forest

2012 ◽  
Vol 10 ◽  
pp. 65-72 ◽  
Author(s):  
Junbin Zhao ◽  
Yiping Zhang ◽  
Zhenghong Tan ◽  
Qinghai Song ◽  
Naishen Liang ◽  
...  
Keyword(s):  
Rain Forest ◽  
Digital Cameras ◽  
Broad Leaved Forest ◽  
Phenological Monitoring ◽  
Leaved Forest
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