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**10** 

*China* 

**Research Development and Utilization** 

**1. General situation of** *J. curcas* **resources in China** 

*J. curcas* has a wide range of adaptation, and is able to endure drought and barren; as its root system is well developed, it can grow on the barren wasteland (cobbly soil, coarse soil, and limestone open ground etc.); it is photophilous, and loves warm and thermal climate. Wild *J. curcas* are mainly distributed in dry and hot subtropical zone and humid tropical rain forest. They usually grow on the flat ground, hills and river valley barren mountain slopes, and their height above sea level shall be 700m-1600m. *J. curcas* has certain cold resistance, and is able to endure a short-time low temperature of -5Ԩ. It is not demanding of the soil fertility of its growing place, as long as the pH value is 5-6 and the soil drainage is good. They are usually planted as hedge around the land, and there are also semi-wild *J. curcas*, which often grow among the shrubs beside the flat-ground road, and are scattered (Li et al., 2007; Gou &

*J. curcas* in China are mainly distributed in the south subtropical dry and hot river valley areas. They are planted or wild in provinces (areas) of Guangdong, Guangxi, Yunnan, Sichuan, Guizhou, Taiwan, Fujian, and Hainan etc, and are planted in the west, southwest and middle part of Yunnan, as well as in the drainage basins of Yuan River, Jinsha River, and Lancang River (Liu et al., 2008); In Guangxi, they mainly grow in Qinzhou, Bobai, Rong County, Cangwu, Nanning, Yining, Longzhou, Ningming, Baise, Lingyun, and Du'an etc. In, Sichuan Province, they are wild or planted in Panzhihua, Yanbian, Miyi, Ningnan, Dechang, Huili of Xichang, Jinyang, and Yanyuan etc. In Guizhou, they are mainly distributed in the south and southwest part; the south subtropical dry and hot river valley areas at the drainage basins of Nanpan River, Beipan River and Hongshui River are the cultivation centers; and they are sparsely distributed in cities or counties of Luodian, Wangmo, Ceheng, Zhenfeng, and Xingyi etc. In recent years, the new *J. curcas* forestation area in Zhenfeng, Wangmo, Ceheng, Luodian etc has exceeded 1500hm, and *J. curcas* experimental forest demonstration base and the seedlings base have been preliminarily established in Zhenfeng County, Xingyi City, and Luodian County (Yu et al., 2006; Yang et

**1.1 Growth habit** 

Hua, 2007).

**1.2 Resources distribution** 

al., 2006; Yuan et al., 2007).

**Status on** *Jatropha curcas* **in China** 

Li Kun1,2, Liu Fang-Yan1,2 and Sun Yong-Yu1,2 *1Research Institute of Resources Insects, CAF, Kunming 2Desert Ecosystem Station in Yuanmou County, SFA* 
