Bird responses to broad-leaved forest patch area in a plantation landscape across seasons

2009 ◽  
Vol 142 (10) ◽  
pp. 2155-2165 ◽  
Author(s):  
Yuichi Yamaura ◽  
Susumu Ikeno ◽  
Makoto Sano ◽  
Kimiko Okabe ◽  
Kenichi Ozaki
Keyword(s):  
Patch Area ◽  
Forest Patch ◽  
Broad Leaved Forest ◽  
Leaved Forest

scholarly journals The tonkin snub-nosed monkey Rhinopithecus avunculus population in the Quan Ba forest, north-east Vietnam: an identification of priority habitat for conservation

2019 ◽  
Vol 41 (3) ◽  
Author(s):  
Nguyen Xuan Dang ◽  
Nguyen Xuan Nghia ◽  
Pham Van The
Keyword(s):  
Conservation Area ◽  
Forest Patch ◽  
Term Survival ◽  
Forest Farming ◽  
North East ◽  
Broad Leaved Forest ◽  
Priority Habitat ◽  
The Hill ◽  
Leaved Forest

The Tonkin Snub-nosed Monkey Rhinopithecus avunculus is among the World’s 25 most endangered primates. At present, the species is found only in few forest areas in Ha Giang and Tuyen Quang Provinces, north-east Vietnam with a total number not exceeding 250 individuals.  The forest block in Cao Ma Po, Ta Van and Tung Vai Communes of Quan Ba District, Ha Giang Province (the Cao - Ta - Tung forest) harbors the second largest population of Tonkin Snub-nosed Monkey. This population was estimated to be conisted of about 30–35 individuals in 2007.  However, it faces a number of serious threats (wildlife hunting, habitat degradation by widespread forest farming of Tsao-ko cardamom plant, etc.) that may lead the population to be extinct in near future. The population was reduced to 15–21 individuals in 2016 due to these threats. In 2017–2018, we conducted a study to identify a priority habitat area to establish the Quan Ba Tonkin Snub-nosed Monkey Conservation Area. The results of our study show that the distribution of  the Quan Ba Tonkin Snub-nosed Monkey  population is  confined to a small area (about 5,000 ha) belonging to the Theng Chu Phin, Dao Dan Chai, Ta Lay mountains, the Hill 754 and a forest patch along the Vietnam-China  border  from the Post 283  to Post 295. This area harbors the best forest of the Cao - Ta - Tung area. The forest covers 92.3% of the area, and only 7.7% of the area is a non-forest land. There are two types of forest: evergreen broad-leaved forest (50.0% of total area) and limestone evergreen broad-leaved forest (42.3%).  The evergreen broad-leaved forest has been degraded to medium and restoration status. Tsao-ko cardamom Amomum tsao-ko fields are widespread. The limestone evergreen broad-leaved forest of almost primary status remains in very steep slopes and limestone mountains. The Cao - Ta - Tung forest was designated as a watershed protection forest that allows farming of agricultural and medicinal plants inside the forest and the forest farming of Tsao-ko cardamom is widespread becoming the most serious threat to the long-term survival of the Tonkin Snub-nosed Monkey population. In order to ensure long-term survival of the Quan Ba Tonkin Snub-nosed Monkey population, the  area of the Theng Chu Pin, Dao Dai Chai, Ta Lay, Tung Lau mountains,  the Hill 754 and a forest patch along the Vietnam-China border from the Post 283 to Post 285 must be designated as a special-use forest, i.e. to establish a Quan Ba Tonkin Snub-nosed Monkey Conservation Area. 

scholarly journals The tonkin snub-nosed monkey Rhinopithecus avunculus population in the Quan Ba forest, north-east Vietnam: an identification of priority habitat for conservation

2019 ◽  
Vol 41 (3) ◽  
Author(s):  
Nguyen Xuan Dang ◽  
Nguyen Xuan Nghia ◽  
Pham Van The
Keyword(s):  
Conservation Area ◽  
Forest Patch ◽  
Term Survival ◽  
Forest Farming ◽  
North East ◽  
Broad Leaved Forest ◽  
Priority Habitat ◽  
The Hill ◽  
Leaved Forest

The Tonkin Snub-nosed Monkey Rhinopithecus avunculus is among the World’s 25 most endangered primates. At present, the species is found only in few forest areas in Ha Giang and Tuyen Quang Provinces, north-east Vietnam with a total number not exceeding 250 individuals.  The forest block in Cao Ma Po, Ta Van and Tung Vai Communes of Quan Ba District, Ha Giang Province (the Cao - Ta - Tung forest) harbors the second largest population of Tonkin Snub-nosed Monkey. This population was estimated to be conisted of about 30–35 individuals in 2007.  However, it faces a number of serious threats (wildlife hunting, habitat degradation by widespread forest farming of Tsao-ko cardamom plant, etc.) that may lead the population to be extinct in near future. The population was reduced to 15–21 individuals in 2016 due to these threats. In 2017–2018, we conducted a study to identify a priority habitat area to establish the Quan Ba Tonkin Snub-nosed Monkey Conservation Area. The results of our study show that the distribution of  the Quan Ba Tonkin Snub-nosed Monkey  population is  confined to a small area (about 5,000 ha) belonging to the Theng Chu Phin, Dao Dan Chai, Ta Lay mountains, the Hill 754 and a forest patch along the Vietnam-China  border  from the Post 283  to Post 295. This area harbors the best forest of the Cao - Ta - Tung area. The forest covers 92.3% of the area, and only 7.7% of the area is a non-forest land. There are two types of forest: evergreen broad-leaved forest (50.0% of total area) and limestone evergreen broad-leaved forest (42.3%).  The evergreen broad-leaved forest has been degraded to medium and restoration status. Tsao-ko cardamom Amomum tsao-ko fields are widespread. The limestone evergreen broad-leaved forest of almost primary status remains in very steep slopes and limestone mountains. The Cao - Ta - Tung forest was designated as a watershed protection forest that allows farming of agricultural and medicinal plants inside the forest and the forest farming of Tsao-ko cardamom is widespread becoming the most serious threat to the long-term survival of the Tonkin Snub-nosed Monkey population. In order to ensure long-term survival of the Quan Ba Tonkin Snub-nosed Monkey population, the  area of the Theng Chu Pin, Dao Dai Chai, Ta Lay, Tung Lau mountains,  the Hill 754 and a forest patch along the Vietnam-China border from the Post 283 to Post 285 must be designated as a special-use forest, i.e. to establish a Quan Ba Tonkin Snub-nosed Monkey Conservation Area. 

Classification of vegetation in Cucphuong National Park with the aim of large-scale mapping, Vietnam

1996 ◽  
pp. 64-67 ◽  
Author(s):  
Nguen Nghia Thin ◽  
Nguen Ba Thu ◽  
Tran Van Thuy
Keyword(s):  
National Park ◽  
Large Scale ◽  
Satellite Images ◽  
Field Work ◽  
Aerial Photographs ◽  
Vegetation Map ◽  
Dense Forest ◽  
Broad Leaved Forest ◽  
Leaved Forest

The tropical seasonal rainy evergreen broad-leaved forest vegetation of the Cucphoung National Park has been classified and the distribution of plant communities has been shown on the map using the relations of vegetation to geology, geomorphology and pedology. The method of vegetation mapping includes: 1) the identifying of vegetation types in the remote-sensed materials (aerial photographs and satellite images); 2) field work to compile the interpretation keys and to characterize all the communities of a study area; 3) compilation of the final vegetation map using the combined information. In the classification presented a number of different level vegetation units have been identified: formation classes (3), formation sub-classes (3), formation groups (3), formations (4), subformations (10) and communities (19). Communities have been taken as mapping units. So in the vegetation map of the National Park 19 vegetation categories has been shown altogether, among them 13 are natural primary communities, and 6 are the secondary, anthropogenic ones. The secondary succession goes through 3 main stages: grassland herbaceous xerophytic vegetation, xerophytic scrub, dense forest.

Ice and Snow Disasters to the Evergreen Broad-leaved Forest in the Jiulianshan Nature Reserve in Jiangxi, China*

2012 ◽  
Vol 17 (2) ◽  
pp. 180-185 ◽  
Author(s):  
Jun HE ◽  
Xiuhai ZHAO ◽  
Chunyu ZHANG ◽  
Yuzhen JIA ◽  
Juan FAN ◽  
...  
Keyword(s):  
Nature Reserve ◽  
Broad Leaved Forest ◽  
Leaved Forest

Strategy of fine root expansion of Phyllostachys pubescens population into evergreen broad-leaved forest

2013 ◽  
Vol 37 (3) ◽  
pp. 230-238 ◽  
Author(s):  
Jun LIU ◽  
Qing-Pei YANG ◽  
Qing-Ni SONG ◽  
Ding-Kun YU ◽  
Guang-Yao YANG ◽  
...  
Keyword(s):  
Fine Root ◽  
Phyllostachys Pubescens ◽  
Broad Leaved Forest ◽  
Leaved Forest

VEGETATION AND ENVIRONMENTAL FACTORS OF KARST MIRES IN BROAD-LEAVED FOREST ZONE: METHODICAL APPROACHES, "БОТАНИЧЕСКИЙ ЖУРНАЛ"

2012 ◽  
pp. 524-537
Author(s):  
D.V. ZATSARINNAYA ◽  
E.M. VOLKOVA ◽  
A.A. SIRIN
Keyword(s):  
Environmental Factors ◽  
Vegetation Cover ◽  
Anthropogenic Disturbances ◽  
Water Levels ◽  
Forest Zone ◽  
Central European ◽  
Vegetation Communities ◽  
Broad Leaved Forest ◽  
Leaved Forest ◽  
Floating Peat

Vegetation cover and environmental factors were studied in the system of karts mires in the broad- leaved forest zone in Tula Region, Central European Russia. Mires are formed in the sinkholes and characterized by rather low anthropogenic disturbances. These mires are characterised by floating peat mats and variety of vegetation communities which are differ by ecological conditions (water levels, acidity and nutrition). Development and growth of floating mats change water and mineral feeding that leads to succession of vegetation communities.

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