Yang Futun. 1988. The primary production in the alpine meadow ecosystem. Proceedings of the International Symposium of Alpine Meadow Ecosystem 11–15.

Yang Futun et al. 1981. On the primary production of alpine bushland and alpine meadow in Haibei, Qinghai Plateau. Alpine Meadow Ecosystem 44–51. Yang Muyi and R. Hardiman. 1987. A bio-economic model of the farming system in the Southern tablelands of the Qingyang loess plateau. Proceedings of the Conference/Workshop on Farmers' and Graziers' Problems and Their Solutions on the Loess Plateau of China 173–193.

Zhang Dayong. 1988. An index to measure the strength of relationship between community and site. Ecological Modeling 40:145–153.

Zhang Dayong. 1989. A method of detecting departure from randomness in plant communities. Ecological Modeling 46:261–267.

Zhang Dayong. 1990. Succession of the artificial grassland in the mountain grassland area of southern Gansu. Acta Phytoecologica et Geobotanica Sinica 14.2:103–109.

Zhang Dayong et al. 1988. A quantitative study of the vegetation succession on the abandoned arable lands of the subalpine meadows in southern Gansu prefecture of Gansu Province. Acta Phytoecologica et Geobotanica Sinica 12.4:283–291.

Zhang Hongrong and Zhou Zhiyu. 1990. The effect of trace elements on the yield of lucerne. Pratacultural Science of China 7.2:43–47.

Zhang Jixiang and Li Song. 1990. A study of rational application of N and P to alfalfa. Pratacultural Science 7.4:70–72.

Zhang Juming and Ge Wenhua. 1990. A study of optimization modeling of agroeconomical systems in desert-oasis grasslands. Journal of Prataculture 7.1:63–69.

Zhang Shuyuan et al. 1988. Physiological basis of biological yield of Kobresia humilis meadow. Proceedings of the International Symposium of Alpine Meadow Ecosystem 103–108.

Zhao Songling et al. 1982. Use of fuzzy mathematics to study the grazing retrogressive succession stage of the Stipa steppe. Acta Botanic Sinica 24.4.

Zhao Xinquan and Pi Nanlin. 1986. Studies of energy metabolism of ruminants. III. Measurement of the metabolizable energy requirement for the maintenance of Tibetan sheep. Proceedings of the International Symposium of Alpine Meadow Ecosystem 117–123.

Zhao Zhong et al. 1988. Evaluation of forage aerial seeding in Gansu Province. Pratacultural Science of China 5.2:51–53.

Zhong Hao et al. 1986. The influence of a heavy snow on the population density of small mammals. Acta Biological Plateau Sinica 5:85–90.

Zhou Xingmin and Li Jianhua. 1981. The principal vegetation types and their geographical distribution at the Haibei Alpine Meadow Ecosystem Research Station, Menyuan County, Qinghai Province. Alpine Meadow Ecosystem, Xia Wuping ed. Lanzhou: Gansu People's Press.

Zhou Xingmin and Zhang Songlin. 1986. Observations of changes in community structure and biomass in fenced area of Kobresia humilis meadow. Acta Biological Plateau Sinica 5:1–6.

Zhou Xingmin et al. 1986. A preliminary study of optimum stocking rate in alpine meadow. Acta Biological Plateau Sinica 5:21–34.

Zhou Xingmin et al. 1987. The Vegetation of Qinghai. Xining: Qinghai People's Publishing House.

Zhou Zhiyu and Ren Jizhou. 1989. Molybdenum distribution in eight grassland classes of China. Journal of Animal Science and Veterinary Medicine 2:28–31.

Zhou Zhiyu et al. 1990. The distribution of trace elements of the native plants on the Loess Plateau. Journal of Prataculture 1:88–90

Zhu Xingyun and Wang Qin. 1980. A comparative study on forage intake and its measurement with the grazing sheep. China's Grasslands 3:46–49.

Zhu Xingyun et al. 1987. Evaluation of nutritive value of alfalfa with domestic rabbits. Green Forage 1:18–21.

Zhu Xingyun et al. 1988. Salinity dynamics of Puccinellia pasture and salt tolerance study of Puccinellia spp. Pratacultural Science of China Special issue:23–27.



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