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Structure and floristic composition of tree stand in tropical forest in the Eastern Ghats of northern Andhra Pradesh, India 被引量:4
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作者 C. Sudhakar Reddy Shilpa Babar +1 位作者 Giriraj Amarnath chiranjibi pattanaik 《Journal of Forestry Research》 SCIE CAS CSCD 2011年第4期491-500,共10页
The changes in species composition, abundance and forest stand structure were analyzed across altitudinal regimes in tropical forests of Eastern Ghats of northern Andhra Pradesh, India. Three 1-ha plots were establish... The changes in species composition, abundance and forest stand structure were analyzed across altitudinal regimes in tropical forests of Eastern Ghats of northern Andhra Pradesh, India. Three 1-ha plots were established with one each in low, medium and high altitudes. A total of 153 species, 2129 stems (709 stems .ha^-1) of ≥10 cm girth were enumerated. Species richness and diversity pattern varied along altitudinal gradient and increased with the altitude. Species richness varied from 52 to 110 species-ha^-1 and stand density from 639 to 836 stems.ha^-1 with average basal area of 34.39 m^2.ha^-1. Shannon-Wiener index (H') ranged from 4.55 to 5.17. Low altitude (i.e., Site 1) is dominated byXylia xylocarpa (59.22) and Lagerstroemia parviflora (23.90), medium altitude (i.e., Site 2) by Xylia xylocarpa (45;50) Bursera serrata (17.29), and high altitude (i.e., Site 3) has Schleichera oleosa (28.25) Pterocarpus marsupium (26.55) as predominant species. Taxonomically, Rubiaceae (12 species), Fabaceae (12), Euphorbiaceae (11), Rutaceae (7) and Lanraceae (7) were dominant families. Density-wise, Fabaceae, Combretaceae, Euphorbiaceae, Anacardiaceae and Myrtaceae were abundant. Thus, conservation assessment based on altitudinal regimes and the information on species structure and function can provide baseline information for monitoring and sustaining the biodiversity. 展开更多
关键词 ALTITUDE CONSERVATION diversity Eastern Ghats speciescomposition
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Assessment of spatial and temporal dynamics of tropical forest cover: A case study in Malkangiri district of Orissa, India 被引量:4
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作者 chiranjibi pattanaik C. SUDHAKAR Reddy P. MANIKYA Reddy 《Journal of Geographical Sciences》 SCIE CSCD 2011年第1期176-192,共17页
Tropical forests have been recognized as having global conservation importance. However,they are being rapidly destroyed in many regions of the world. Regular monitoring of forests is necessary for an adaptive managem... Tropical forests have been recognized as having global conservation importance. However,they are being rapidly destroyed in many regions of the world. Regular monitoring of forests is necessary for an adaptive management approach and the successful implementation of ecosystem management. The present study analyses the temporal changes in forest ecosystem structure in tribal dominated Malkangiri district of Orissa,India,during 1973-2004 period based on digitized forest cover maps using geographic information system (GIS) and interpretation of satellite data. Three satellite images Landsat MSS (1973),Landsat TM (1990) and IRS P6 LISS III (2004) were used to determine changes. Six land cover types were delineated which includes dense forest,open forest,scrub land,agriculture,barren land and water body. Different forest types were also demarcated within forest class for better understanding the degradation pattern in each forest types. The results showed that there was a net decrease of 475.7 km2 forest cover (rate of deforestation = 2.34) from 1973 to 1990 and 402.3 km2 (rate of deforestation = 2.27) from 1990 to 2004. Forest cover has changed over time depending on a few factors such as large-scale deforestation,shifting cultivation,dam and road construction,unregulated management actions,and social pressure. A significant increase of 1222.8 km2 agriculture area (1973-2004) clearly indicated the conversion of forest cover to agricultural land. These alterations had resulted in significant environmental consequences,including decline in forest cover,soil erosion,and loss of biodiversity. There is an urgent need for rational management of the remaining forest for it to be able to survive beyond next decades. Particular attention must be paid to tropical forests,which are rapidly being deforested. 展开更多
关键词 DEFORESTATION forest dynamics GIS remote sensing tropical forest Malkangiri Orissa
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The Medicinal Flora of Sambalpur District,Orissa,India
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作者 chiranjibi pattanaik C.Sudhakar Reddy P.Manikya Reddy 《云南植物研究》 CSCD 北大核心 2010年第6期554-560,共7页
This paper describes an analysis of the plants of Sambalpur district of Orissa,India which have been used medicinally by local people. The families having medicinal values are analysed using Moerman's method of re... This paper describes an analysis of the plants of Sambalpur district of Orissa,India which have been used medicinally by local people. The families having medicinal values are analysed using Moerman's method of regression analysis. There were 136 plant families recorded from the study area. The analysis of families showed that the Euphorbiaceae family being used most ethnomedicinally by the local people in Sambalpur district of Orissa,whereas Poaceae is used least one. This type of study determines the degree of importance of plant families in the medicinal flora of the region. 展开更多
关键词 Medicinal flora ORISSA Regression analysis Sambalpur district
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