描述:
society. The central
Shaanxi Province lies in the northwest inner-land, lacking in water resources. Although
there have been major farmland irrigation projects and perfect management system in
the Qin and Han Dynasty, the times of the Sui and Tang Dynasty, the situation of water
depletion could not be changed radically.
描述:
society. The central
Shaanxi Province lies in the northwest inner-land, lacking in water resources. Although
there have been major farmland irrigation projects and perfect management system in
the Qin and Han Dynasty, the times of the Sui and Tang Dynasty, the situation of water
depletion could not be changed radically.
描述:
in agriculture. In recent years, the
Western Development Drive (WDD) has been carried out, however, the problem of
lack of water has still not been solved fundamentally.
描述:
g Bu between Yong Le
and Zheng Tong. He had participated in the third recession of ,Ming Dynsty called troops back from An Nan(The Fouth and Fifth Chapter) and
affirms his role on the the mutation relationship between Ming Dynasty and An Nan.
Luo Rujing took an important part in the development of Shan Xi
Military-Farmsettlement for ten years. He had made enormous contribution on Shan
Xi Military-Farmsettlement's restoration and water conservancy facilities
management. Compared with the later period of Yong Le, Shan Xi military farm
settlement has restored greatly on a stage as intermediate period of Xuan De. With
Luo Rujing's absent from Shan Xi, Military一Farmsettlement in northwest of Ming
Dynasty degraded obviously.
"Paeificated Jiao Zhi, Carried out the mission successfully" and had come into
ShanXi four times to manage in the opening up wasteland and "He contributes in
many aspects".
描述:
ainly chooses three aspects, the quantity and quality
of farmland, the land system and agricultural technology, to analysis the fact that the land system,
the land utilization patterns and the selection of agricultural technology are constrained by natural
environment and land resources, accordingly reveal the main-land relationship which is influenced
by natural environment. The thesis is composed of four parts.