Rainfall changes over tropical montane cloud forests of southern Western Ghats, India

被引：0

作者：

Murugan, Muthusamy ^{[1
]}

Shetty, Paddu Krishnappa ^{[1
]}

Anandhi, Auvudai ^{[2
]}

Ravi, Raju ^{[3
]}

Alappan, Subbiah ^{[4
]}

Vasudevan, Muhund ^{[5
]}

Gopalan, Sreeja ^{[1
]}

机构：

[1] Natl Inst Adv Studies, Sch Nat Sci & Engn, Bangalore 560012, Karnataka, India

[2] CUNY, Hunter Coll, Inst Sustainable Cities, New York, NY 10021 USA

[3] Indian Inst Sci, Dept Mat Engn, Bangalore 560012, Karnataka, India

[4] Spices & Plantat Crops Advisory Serv, Cumbum 625556, India

[5] Jawaharlal Nehru Ctr Adv Sci Res, Dept Atmospher Sci, Bangalore 560064, Karnataka, India

来源：

CURRENT SCIENCE | 2009年 / 97卷 / 12期

关键词：

Meghamalai; montane cloud forest; precipitation change;

D O I：

暂无

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The southern Western Ghats tropical montane cloud forest sites (Gavi, Periyar, High wavys and Venniyar), which are characterized by frequent or seasonal cloud cover at the vegetation level, are considered one of the most threatened ecosystems in India and the world. Three out of four montane cloud forest sites studied in the southern Western Ghats had experienced diminishing trends of seasonal average and total rainfall, especially during summer monsoon season. The highest level of reduction for summer monsoon season was observed at Gavi rainforest station (>20 mm/14 years) in Kerala followed by Venniyar (>20 mm/20 years) site in Tamil Nadu. Average annual and total precipitation increased during the study period irrespective of the seasons over Periyar area, and the greatest values were recorded for season 2 (>25 mm/28 years). Positive trends for winter monsoon rainfall has been observed for three stations (Periyar, High wavys and Venniyar) except Gavi, and the trend was positive and significant (90%) for Periyar and High wavys. Increase in summer monsoon rainfall was observed for Periyar site and the trend was found to be significant (95%).

引用

页码：1755 / 1760

页数：7

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