四、科研成果
（一）主持、参与完成及正在进行的科研项目
1. 国家自然科学基金项目：中国特有植物四棱草属的比较形态及其系统分类位置的研究，1992-1994，参加。
2. 国家自然科学基金项目：锦鸡儿属种系发生关系的研究，1994-1996，参加。
3. 陕西省自然科学基金项目：秦岭种子植物数据库信息系统研究，1993-1995，参加。
4. 陕西省自然科学基金项目：七筋姑的种系发生关系研究，1997-1998，主要参加。
5. 中日合作研究项目：黄土高原持续农业综合研究??适应于黄土高原林木选拔和耐力研究，1995-2000，主要参加。
6. 国家自然科学基金项目：蒙新荒漠两侧豆科对子种的细胞地理学研究，1996-1998，主要参加。
7. 陕西省科学院青年基金项目：中国西北地区豆科优势植物资源开发利用研究，1998-2000，主持。
8. 中国科学院生物标本馆网络工程项目，2000-2005，主要参加。
9. 国家自然科学基金：中国黄耆属旱生类群的分类订正和区系地理研究，2003-2005，主持。
10. 国家自然科学基金项目：大巴山（狭义）维管植物区系地理及其植物资源的研究，2004-2006，参加。
11. 国家自然科学基金国际合作项目《Flora of China》资助课题：中国黄耆属植物的系统及分类修订，2005-2008，主持。
12. 国家自然科学基金：青藏高原豆科黄耆属的分类订正及其区系地理研究，2009-2011，主持。作者: 范老师 时间: 12-3-29 09:17
（二）、近期发表的部分专著及科研论文
1. Liu Yingxin, Chang Zhaoyang, Gennady Pavlovich Yakovlev. Caragana, in Flora of China, vol. 10. in press. (co-author)
2. Chang Zhaoyang, Xu Langran & Shi Fuchen. A taxonomic revision of Caragana tangutica and C. kozlowi (Leguminosae). Acta Phytotaxonomica Sinica, 2007, 45 (3): 391?395.
3. Chang Zhaoyang, Xu Langran & D. Podlech. Astragalus eerqisiensis and A. shadiensis, two new species of Leguminosae from Xinjiang, China. Acta Bot. Boreal.-Occident. Sin. 2007, 27(1): 168-172.
4. Z Y Chang, L R Xu & F C Shi. Caragana qingheensis (Fabaceae), a new species from northwestern China. Ann. Bot. Fennici, 2006, 43(6): 445-447.
5. Chang Zhaoyang, Wu Zhenhai, Xu Langran. Onobrychis micrantha Schrenk, a newly recorded species of Leguminosae from China. Acta Phytotaxonomica Sinica, 2006, 44(2): 187-188.
6. Chang Zhaoyang, Xu Langran & Wu Zhenhai et al. Some New synonyms of the genus Astragalus L. from China. Acta Bot. Boreal.-Occident. Sin.2005, 25(12):2533-2534.
7. Chang Zhaoyang, Wu Zhenhai & Xu Langran. Oxytropis aciphylla f. albiflora, a new form of Leguminosae from Ningxia of China. Acta Bot. Boreal.-Occident. Sin.2005, 25(5):1022-1023.
8. Chang Zhaoyang, Xu Langran & Wu Zhenhai. Comparative morphology, ecology and geographical distribution of Calophaca sinica and C. soongorica. Acta Bot. Boreal.-Occident. Sin. 2004, 24(12): 2312-2320.
9. Chang Zhaoyang, Li Sifeng & Yangjun. Morphological features of seed surfaces in the genus Clintonia Raf. (Liliaceae). Journal of Wuhan Botanical Research. 1998, 16(1):1-4.
10. Chang Zhaoyang, Li Sifeng. The leaf epidermal features and their systematic significance of the genus Clintonia Raf. Acta Bot. Boreal.-Occident. Sin.1997, 17(4): 468-473.
11. Chang Zhaoyang, Zhang Mingli. Anatomical structures of young stems and leaves of some Caragana species with their ecological adaptabilities. Bulletine of Botanical Research. 1997, 17(1): 65-71.
12. Liu Xiaolin, Chang Zhaoyang, Xu Langran. Taxonomical status of Astragalus leansanicus and A.limprichtii based on their micro-morphology. Acta Bot. Boreal.-Occident. Sin. 2008, 28(2): 272-277.
13. Zhang Yu, Chang Zhaoyang. Astragalus with medifixed hairs in mountainous area of west Junggar Basin, Xinjiang, China. Acta Bot. Boreal.-Occident. Sin. 2007, 27(4): 813-821.
14. Li Bin, Chang Zhaoyang, Wu Zhenhai et al. A karyotype study of six Astragalus species from China. Acta Bot. Boreal.-Occident. Sin. 2004, 24(4): 711-715.
15. Li Bin, Chang Zhaoyang, Xu Langran et al. Studies on cytology of 11 Astragalus species from Northwestern China. Acta Bot. Boreal.-Occident. Sin. 2002, 22(3): 467-475.
16. Li Sifeng, Li Bin, Chang Zhaoyang et al. A cytological study of Astragalus dshimensis Gontsh. and A. hoantchy Franch. with a taxonomic revision. Acta Bot. Boreal.-Occident. Sin. 2000, 20(3): 415-420.
17. Xu Langran, Chang Zhaoyang, Li Sifeng et al. The floristic characteristics and eco-geographical distribution patterns of the xerophilous groups of Astragalus in China. Acta Bot. Boreal.-Occident. Sin. 1999, 19(3): 487-493.
18. Li Sifeng, Chang Zhaoyang, Li Bin. The infraspecific variation of pollen morphology and its systematic significance of Clintonia udensis. Acta Bot. Boreal.-Occident. Sin. 1997, 17(1): 39-42.
19. Li Sifeng, Chang Zhaoyang & Li Bin et al. A cytogeographical study of one pairing species of Calophaca Fisch. between west and east sides of Mongolia-Xinjiang desert. Acta Bot. Boreal.-Occident. Sin. 1998, 18(2): 246-251.
20. Li Sifeng, Chang Zhaoyang. A cytogeographical study on Clintonia udensis (Liliaceae). Acta Phytotaxonomica Sinica, 1996, 34(1): 29-38.
21. Si-feng Li, Zhao-yang Chang, Yong-ming Yuan. The origin and dispersal of the genus Clintonia Raf. (Liliaceae): evidence from its cyto-geography and morphology. Caryologia, 1996, 49:125-135.
22. Chang Zhaoyang. Salicaceae. In. Fu K T eds. Flora of Loess Plateau, Vol. 1, 2000.
23. Chang Zhaoyang. Leguminosae. In: Chen Cungen eds. Flora of the Loess Plateau in Central China ?? a field guide, IHW-Verlag, 2007.