Reconstruction of spatial distribution of cultivated oases in Han-Dynasty Heihe River basin
The spatial range of the largest probable cultivated oasis was obtained by an visual interpretation of remote sensing images and the overall range was obtained by the use of soil type, altitude and slope. Then evidence for reconstructing cultivated oasis spatial distribution in Han-Dynasty was obtained based on multi-disciplinary research methods, 3S technique, historical documents, ancient sites and historical maps and the implementation of several detailed fieldworks. Finally, the space range and number of cultivated oases were reconstructed and a detailed distribution of cultivated oases was also acquired. The reconstruction results show that Han-Dynasty cultivated oases were distributed in the whole basin but mainly in the mainstream of Heihe and also in the downstreams of several tributaries. The total area of Han-Dynasty cultivated oases reached 1 755 km2 and was scattered with small areas in the upstream and midstream while being relatively concentrated in downstream, mainly in ancient Juyan region. The cultivated oases of Heihe River basin in the Han-Dynasty were of a large scale and were a product of the then national policy, advanced agricultural technology, the flourishing the silk road and good natural environment.
cultivated oasisspatial distributionHan-DynastyHeihe River basin
NETL
NSTL
万方数据
维普
