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Report of a Rapid Biodiversity Assessment at Dawuling Nature Reserve, Southwest Guangdong, China, June/July 2002

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Report of a Rapid Biodiversity Assessment at Dawuling Nature Reserve, Southwest Guangdong, China, June/July 2002 Report of a Rapid Biodiversity Assessment at Dawuling Nature Reserve, Southwest Guangdong, China, June/July 2002 Kadoorie Farm and Botanic Garden in collaboration with Guangdong Provincial Forestry Department South China Normal University March 2004 South China Forest Biodiversity Survey Report Series: No. 38 (Online Simplified Version) Report of a Rapid Biodiversity Assessment at Dawuling Nature Reserve, Southwest Guangdong, China, June/July 2002 Editors Bosco P.L. Chan, Michael W.N. Lau, Ng Sai-Chit and John R. Fellowes Contributors Kadoorie Farm and Botanic Garden: Bosco P.L. Chan (BC) Michael W.N. Lau (ML) Lee Kwok Shing (LKS) Ng Sai-Chit (NSC) John R. Fellowes (JRF) South China Normal University: Li Zhenchang (LZC) Xiao Zhi (XZ) Chen Xianglin (CXL) Voluntary specialist: Keith D.P. Wilson (KW) Background The present report details the findings of a visit to Southwest Guangdong by members of Kadoorie Farm and Botanic Garden (KFBG) in Hong Kong and their colleagues, as part of KFBG's South China Biodiversity Conservation Programme (renamed the China Programme in 2003). The overall aim of the programme is to minimise the loss of forest biodiversity in the region, and the emphasis in the first phase is on gathering up-to-date information on the distribution and status of fauna and flora. Citation Kadoorie Farm and Botanic Garden, 2004. Report of a Rapid Biodiversity Assessment at Dawuling Nature Reserve, Southwest Guangdong, China, June/July 2002. South China Forest Biodiversity Survey Report Series (Online Simplified Version): No. 38. KFBG, Hong Kong SAR, ii + 19 pp. Copyright © Kadoorie Farm and Botanic Garden Corporation Lam Kam Road, Tai Po, N.T., Hong Kong SAR March 2004 - i - Contents Objectives ……………………………………………………………………………….. 1 Methods …………………………………………………………………………………. 1 Location and management …………………………………………………….………… 1 Results …………………………………………………………….…………………….. 2 Vegetation …………………………………………………………………………………. 2 Flora ……………………………………………………………………………………….. 3 Mammals ………………………………………………………………………………….. 9 Birds ……………………………………………………………………………………….. 10 Reptiles and Amphibians ………………………………………………………………… 11 Fish ………………………………………………………………………………….……… 12 Dragonflies ………………………………………………………………………………… 13 Butterflies ……………………………………………………………………..…………… 13 Ants …………………………………………………………………………….…………… 14 Summary of flora and fauna ………………………………………………..….………… 14 Threats and problems …………………………………………………….……………… 15 Opportunities …………………………………………………………….……………… 16 Acknowledgements ……………………………………………………..……………….. 16 References …….…………………………………………………………………………. 16 Figure 1. Map…………………………………………………………………………….. 19 Translation of some common Chinese geographical terms Romanized Chinese (pinyin) English meaning Bei north Dao island Dong east Feng shui the Chinese system of geomancy Feng, Ding peak, summit Gang harbour Hai sea He, Chuan, Jiang river Hu, Chi lake Keng, Gu, Gou valley, stream Kou outlet Ling range Nan south Ping flat Shan mountain Shi city Tun hamlet Wan bay Xi west Xi, Yong stream Xian county Xiang, Cun village - ii - Report of a Rapid Biodiversity Assessment at Dawuling Nature Reserve, Southwest Guangdong, China, June/July 2002 Objectives The aims of the survey were to collect up-to-date information on the fauna and flora of Dawuling Nature Reserve, and to use this to help determine conservation priorities within South China. The present survey was the second visit by a team of biologists from KFBG, the earlier one on 25-28 April 1997 concentrating on birds, herpetofauna, butterflies and ants (Fellowes & Hau, 1997). This second survey sought to update and augment the information gained earlier, with additional attention to groups not previously covered such as flora, fish and dragonflies. Methods On 28 June to 3 July 2002, a team of biologists from Hong Kong (BC, ML, LKS, NSC) and Guangzhou (LZC, XZ) conducted a rapid biodiversity survey at Dawuling National Nature Reserve. During fieldwork visual searching for plants, mammals, birds, reptiles, amphibians, fish, butterflies and dragonflies was conducted. Frogs and birds were also identified by their calls. Plant records were made by field observation, with some specimens collected. Vascular plant records were made and edited by NSC. Mammal records were made by ML and BC. Records of birds were made or verified by LKS or ML, reptiles and amphibians by ML, BC, LZC or XZ, fish by BC, dragonflies and butterflies by ML, and dragonflies verified by KW. Nomenclature in the report is standardised based, unless otherwise stated, on the following references: – Flora (Pteridophyta, Gymnospermae and Angiospermae): Anon. (1959-2001); Anon. (1996-2001); Anon. (2003a, 2003b); The Plant Names Project (2003); – Mammals (Mammalia): Wilson & Cole (2000); – Birds (Aves): Inskipp et al . (1996); – Reptiles and Amphibians (Reptilia and Amphibia): Zhao E.-M. & Adler (1993); Zhao E. et al. (2000); – Fish (Actinopterygii): Nelson (1994); Wu et al. (1999); – Dragonflies (Insecta: Odonata): Schorr et al. (2001a, 2001b); – Butterflies (Insecta: Lepidoptera): Bascombe (1995). Information on the global status of species is from IUCN publications, notably IUCN (2003). Certain taxa, including orchids, reptiles, amphibians, fish and invertebrates, have yet to be properly assessed for global status. National conservation status of orchids is based on Wang et al. (in press). Protected status in China is based on Hua & Yan (1993) for animals, and Yu (1999) for plants. Location and management Dawuling Nature Reserve is located between Xinyi and Gaozhou Cities, Maoming City District, Southwest Guangdong, at 111 o 8-15’E, 22 o 14-17’N. Administration of the reserve is the responsibility of the Xinyi City Forestry Bureau. The size of the reserve is 34.4 km 2 (Zhang, J., 1997; State Forestry Administration Wildlife Conservation Office, 2003). The mountainous Dawuling Nature Reserve is part of the Yunwushan range; the altitudinal range is 800 to 1,704 m, with the highest being the summit of Datian Ding, the second- highest peak in Guangdong. Datian Ding has the headwaters of two large drainage systems - - 1 - the sea-going Jian Jiang flowing direct into the South China Sea near Qiongzhou Strait, and Huanghua Jiang, a tributary of Xi Jiang of the Zhujiang drainage (Anon., 1997). The region as a whole has a southern subtropical climate with a mean annual temperature of 17-18 °C, on average 5 °C cooler than the lowlands. Recorded maximum temperature was 28 °C and minimum temperature was -5°C; annual precipitation is about 2,300-2,600 mm and occurs mainly between March and November in the forest area. Geology is mainly granite (Anon., 1997). The reserve was established in 1994 and upgraded to a provincial-level reserve in 1996, and the reserve management is seeking to upgrade Dawuling to a national nature reserve. Dawuling Nature Reserve had nine substations with a total of 59 staff in 1997, of which 14 were officers and 45 workers (Anon., 1997). The reserve headquarters is close to the Dawuling State Forest Farm, at an elevation of 1,030 m. It features a guesthouse with some entertainment facilities. The management authorities were building/refurbishing some of their substations at the time of our visit. The reserve has three core areas, namely Dongtang, Chang Keng and Datian Reservoir, and the best forest could be found in Chang Keng area (Anon., 1997; Xu Zhaorong, Deputy Director of Dawuling Nature Reserve, pers. comm. 29 June 2003). Due to major logging activity in the late 1950s, no primary forest remains in the reserve, but about half (16 km 2) of the reserve is currently covered in secondary broadleaf forest, regenerated since the 1960s (Anon., 1997). The reserve’s major objective is to protect the rare animal and plant species, such as tree ferns, Cephalotaxus mannii , Apterosperma oblata , Asiatic Golden Cat Catopuma temmincki and Chinese Pangolin Manis pentadactyla (State Forestry Administration Wildlife Conservation Office, 2003). Results Vegetation The zonal vegetation of Dawuling Nature Reserve should be south subtropical evergreen broadleaf forest. All primary forest cover, however, had been cleared (Anon., 1997, 6). The area is now covered mainly in highly fragmented young hillside secondary forest and plantations of Cryptomeria fortunei , Pinus massoniana , Cunninghamia lanceolata and Phyllostachys heterocycla cv. Pubescens . The present survey covered the following areas and vegetation types: – At parts of Datian Ding, hillside secondary evergreen forest, with trees about 6-8 m tall and less than 30cm dbh, dominated by Lithocarpus sp. (cf.. L. elaeagnifolius ), Castanopsis fabri , Machilus wangiana and Elaeocarpus japonicus . – Hillside secondary evergreen forest dominated by Castanopsis fabri , Castanopsis carlesii , Lithocarpus corneus , Neolitsea chuii , Machilus wangiana , M. thunbergii , M. pauhoi , Helicia longipetiolata , Elaeocarpus duclouxii and Alniphyllum fortunei could be found at high altitudes at a few locations. Trees were about 6-15 m tall and up to 60 cm dbh. – Secondary ravine forest, with trees up to 6-10 m tall, dominated by Macaranga adenantha, Machilus wangchiana, Neolitsea chuii, Helicia longipetiolata, Ficus esquiroliana , and F. langkokensis could be found in some ravines. – Shrubland less than 1.5m tall dominated by Dicranopteris splendida , Adinandra hainanensis , Rhodomyrtus tomentosa , Gahnia tristis and Ficus variolosa could be found on mountain ridges and disturbed areas. – Montane tall shrubland about 1.5-2 m tall dominated by Hartia tonkinensis , Enkianthus serrulatus ,
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