【摘要】 对西藏三地市（拉萨、山南和日喀则）的种植业结构与畜牧业结构进行研究的结果表明，该区作物构成及畜禽构成均有较大的不合理性；农牧关系松散，不利于该区农牧业整体的持续发展．文中还提出了该区农牧系统结构调整的基本方向与建议．更多还原

【Abstract】 The study on the crop and livestock structures of the ecosystem in three dis- tricts, Lhasa, Shannan, and Shikaze shows:threr are some unreasonable factors about the crop and livestock’ compositions in ecosystem;the corelation between crop farming and livestock raising is loose, which is not benefitial to the sustainable development of the ecosystems. Also, the general ways and sugestions for the ecosystem structure are pointed Out in this paper.更多还原