scholarly journals Species diversity of epiphytic orchids in natural reserve of Mount Sibela, North Moluccas

2016 ◽  
Author(s):  
Purnomo ◽  
Andaru Satryo
Keyword(s):  
Species Diversity ◽  
Epiphytic Orchids ◽  
Natural Reserve

Bryoflora and Species Diversity in Kanas Natural-Reserve, Xinjiang

2010 ◽  
Vol 30 (4) ◽  
pp. 424-430 ◽  
Author(s):  
Mamtimin Sulayman ◽  
Zuo-Shan GONG ◽  
Anwar Abdurehim ◽  
Rizwangul Eziz ◽  
Dilnur Anwar
Keyword(s):  
Species Diversity ◽  
Natural Reserve

scholarly journals Influence of elevations on woody tree species diversity in Nam Kar Natural Reserve of Daklak province, Vietnam

2016 ◽  
Vol 8 (2) ◽  
pp. 95-101
Author(s):  
Thi Thanh Huong Nguyen ◽  
Thi Nhu Quynh Chau
Keyword(s):  
Species Diversity ◽  
Species Composition ◽  
Tree Species ◽  
Stand Structure ◽  
Satellite Image ◽  
Landsat 8 ◽  
Tree Species Diversity ◽  
Number Of Species ◽  
Natural Reserve ◽  
Forest Strata

This paper describes the influence of elevation on woody tree species diversity in Nam Kar Natural Reserve of Daklak, of which remote sensing and GIS techniques were used as the tools in biodiversity inventory and assessment. The whole Reserve area was divided into four elevation classes based on DEM (Digital Elevation Model) using GIS technique. Landsat 8 satellite image was employed to stratify the forest into the four strata. A total of 4 transect lines of 100 m in length and 20 m in width (abbreviated as H1, H2, H3, and H4) established in east-west direction representing for 4 elevation classes was used for surveying biodiversity and stand structure. The different diversity indices were compared among the different elevation classes. The relationships between reflectance value of sat- ellite image, forest strata with biodiversity indices were also analysed. The result shows that the diversity of woody tree species is different among elevation classes. Based on sample plots a total of 135 tree species belonging to 42 genera was found in this area. Although a low inverse correlations were found between number of species composition, basal area, and tree density with DNs, most correlation was statistically insignificant 95%. However, a medium relation between forest strata and number of species composition were found with correlation coefficient r = 0.53 (P<0.00) in the area. Nghiên cứu này đánh giá đa dạng thực vật thân gỗ tại khu bảo tồn thiên nhiên Nam Kar theo các cấp độ cao khác nhau. Nghiên cứu đã sử dụng ảnh vệ tinh và kỹ thuật GIS để hỗ trong trong việc điều tra và đánh giá đa dạng sinh học. Toàn bộ khu bảo tồn được chia thành 4 cấp độ cao dựa vào mô hình số độ cao (DEM) được thực hiện bằng kỹ thuật GIS. Ảnh Landsat 8 đã được sử dụng để phân chia rừng thành 4 khối trạng thái. Có 4 ô tiêu chuẩn dạng dải có kích thước 100m chiều dài và 20m chiều rộng được đặt ở từng đai cao (viết tắt là H1, H2, H3, và H4) theo hướng cố định Đông – Tây để điều tra đa dạng sinh học và cấu trúc lâm phần của thực vật thân gỗ ở từng đai cao. Các chỉ số đa dạng sinh học đã được so sánh trong từng cấp độ cao. Mối quan hệ giữa giá trị ảnh, hiện trạng rừng với các chỉ số đa dạng cũng được phân tích. Kết quả nghiên cứu cho thấy có sự khác biệt về đa dạng loài thực vật thân gỗ theo từng đai cao. Dựa vào ô mẫu nghiên cứu cũng đã ước tính có 135 loài thuộc 42 chi có trong vùng nghiên cứu. Một số đặc điểm lâm phần như thành phần loài, tiết diệt ngang bình quân và mật độ cây có mối tương quan nghịch với giá trị ảnh vệ tinh tuy nhiên mối quan hệ này không có ý nghĩa thống kê ở độ tin cậy 95%. Tuy vậy nghiên cứu cho thấy có mối tương quan tương quan khá chặt giữa số loài và các khối hiện trạng rừng với hệ số tương quan là 0.53 ở mức P<0.00.

scholarly journals Dominant Species Abundance, Vertical Structure and Plant Diversity Response to Nature Forest Protection in Northeastern China: Conservation Effects and Implications

Forests ◽  
2020 ◽  
Vol 11 (3) ◽  
pp. 295 ◽  
Author(s):  
Yuanyuan Wang ◽  
Jinghua Yu ◽  
Lu Xiao ◽  
Zhaoliang Zhong ◽  
Qiong Wang ◽  
...  
Keyword(s):  
Species Diversity ◽  
Forest Structure ◽  
Structural Equation ◽  
Dominant Species ◽  
Tree Density ◽  
Equation Modeling ◽  
Forest Protection ◽  
Natural Reserve ◽  
The Impact

The conservation of species diversity and improvement of forest structure are essential roles of the Natural Reserve Policy and the Natural Forest Protection Program (NFPP) in China. However, the long-term effects of NFPP are still not well-defined, and a natural reserve (Liangshui) and surrounding region were surveyed as a proxy of NFPP for approaching the protection effects. Our results showed that long-term conservation significantly altered the dominant species in the herb layer (80% of species), followed by shrub (58%) and tree layers (50%); there was a 1.6-8.0-fold increase in abundance in Corylus shrubs, Acer trees and Carex grass, but a 1.3–10.0-fold abundance decrease in larch trees, Athyrium herbs and Lonicera shrubs. In contrast, tree species diversity and distribution evenness increased by 31% and 23.4% in the reserve, respectively. Forest protection in the reserve also led to the forest structural alteration with the observation of larger-sized trees and shorter herbs, but relatively sparse forests (smaller tree density). Structural equation modeling manifested that the reserve directly altered forest structure, at a coefficient of 0.854, nearly two-fold higher than its impact on diversity (0.459) and dominant species (−0.445). The most affected parameters were plant size (trees and herbs) and tree density related to forest structure, tree diversity, herb richness and evenness for diversity traits, and Oxalidaceae and Rosaceae for dominant species. This study provides basic data that can be used to evaluate the impact of the nature reserve in NE China, and these findings can be used to guide the implementation of NFPP in the long-term in the future.

Species Diversity of Broad-Leaved Forest under the Influence of Human Activity in Duozhijian, Yaoluoping Natural Reserve, Anhui Province

2012 ◽  
Vol 485 ◽  
pp. 140-143
Author(s):  
Ren Yan Duan ◽  
Min Yi Huang ◽  
Yu Rong Hou ◽  
Chen Chen Yu
Keyword(s):  
Species Diversity ◽  
Human Activity ◽  
Diversity Index ◽  
Anhui Province ◽  
Forest Community ◽  
Species Diversity Index ◽  
Natural Reserve ◽  
Broad Leaved Forest ◽  
Tree Layer ◽  
Leaved Forest

Human interference has influence the species diversity, some even lead to the loss of diversity. Flora composition and species diversity features of broad-leaved forest community under the influence of human activity at the Yaoluoping natural reserve of Anhui Province were analyzed. According to the statistics from 10 sample plots, there are 62 species (including varieties) of 50 genus belonging to 38 families of vascular plants. There are various plants in the community of broad-leaved forest, and its family and genus are of scattered composition. Their floral composition is complicated. The species diversity index of different layers shows: tree layer>=shrub layer>herb layer.

Species diversity of corticolous myxomycetes in Tianmu Mountain National Nature Reserve, China

2013 ◽  
Vol 59 (12) ◽  
pp. 803-813 ◽  
Author(s):  
Qi-Sha Liu ◽  
Shu-Zhen Yan ◽  
Jun-Yong Dai ◽  
Shuang-Lin Chen
Keyword(s):  
Species Richness ◽  
Species Diversity ◽  
Nature Reserve ◽  
Eastern China ◽  
Coniferous Forest ◽  
Vegetation Types ◽  
Key Factors ◽  
Broadleaf Forest ◽  
Natural Reserve ◽  
Deciduous Broadleaf Forest

The species diversity of corticolous myxomycetes on 4 vegetation types in the Tianmu Mountain National Natural Reserve, eastern China, was examined from 2011 to 2012. A total of 1440 moist chamber cultures were prepared with bark samples, which yielded several hundred collections representing 42 species in 20 genera. It was found that 79% of cultures produced some evidence (either plasmodia or fruiting bodies) of myxomycetes. Eight species (Comatricha elegans, Cribraria confusa, Licea pusilla, Cribraria microcarpa, Collaria arcyrionema, Licea biforis, Arcyria cinerea, and Clastoderma debaryanum) were abundant (exceeding 3% of all records), but about a third of all species were classified as rare. Species richness (S = 33) and diversity (exp[H′] = 16.60, S/G = 1.74) of corticolous myxomycetes were the most diverse in the deciduous broadleaf forest. The species recorded from coniferous forest showed the lowest species richness (S = 21) but the highest evenness (J′ = 0.91). The cluster analyses were based on the Bray–Curtis similarity matrix, and the results indicated that corticolous myxomycete assemblages were distributed by a seasonal and annual pattern. Canonical correspondence analysis showed that season and pH were key factors in determining species distribution.

Species Diversity of Pseudolarix amabilis Population in Yaoluoping Natural Reserve of Anhui Province

2012 ◽  
Vol 518-523 ◽  
pp. 5302-5305
Author(s):  
Ren Yan Duan ◽  
Min Yi Huang ◽  
Zhi Gao Wang ◽  
Zhong Xin Zhang
Keyword(s):  
Species Diversity ◽  
Vascular Plants ◽  
Vertical Structure ◽  
Diversity Index ◽  
Anhui Province ◽  
Herb Layer ◽  
Species Diversity Index ◽  
Shrub Layer ◽  
Natural Reserve ◽  
Tree Layer

Flora composition and species diversity features of Pseudolarix amabilis community at the Yaoluoping natural reserve in Anhui Province were analyzed. According to the statistics from 4 sample plots, there are 88 species (including varieties) of 77 genus belonging to 48 families of vascular plants. There are various plants in the community of Pseudolarix amabilis, and its family and genus are of scattered composition. Their floral composition is complicated. In terms of geographical composition of seed plant genus, most of them are distributed in the temperate zone. The species diversity of shrub layer is the highest, the tree layer is the second, and the herb layer is the lowest in the vertical structure of the community. The species diversity index of different layers shows: shrub layer>tree layer>herb layer.

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