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Titlebook: Afforestation in Arid Zones; R. N. Kaul Book 1970 Dr. W. Junk N.V., Publishers, The Hague 1970 desert.extreme conditions.forest.forestry.p

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41#
發(fā)表于 2025-3-28 18:10:35 | 只看該作者
42#
發(fā)表于 2025-3-28 21:49:27 | 只看該作者
43#
發(fā)表于 2025-3-29 00:35:31 | 只看該作者
44#
發(fā)表于 2025-3-29 05:51:08 | 只看該作者
Ariadna Strugielska,Teresa Siek-Piskozubhe lack of water or because of an existing poor distribution of rainfall (. 1955). . (1955) combines in one map the .. (1934) arid areas based on rainfall with QUELLE’S map of agriculture under irrigation. This area coincides very much with the area where the rainfall is below the 500 mm per year le
45#
發(fā)表于 2025-3-29 09:27:53 | 只看該作者
46#
發(fā)表于 2025-3-29 11:37:42 | 只看該作者
https://doi.org/10.1007/978-981-16-5525-8of trees in the arid zone is aimed mainly at the amelioration of living conditions for the sparse human and animal population or as a strategic reserve for stock fodder in times of major droughts. In the semi-arid zone, with its less severe environment and greater population density, trees are used
47#
發(fā)表于 2025-3-29 16:08:58 | 只看該作者
Spain in south-east Spain and a small island in the south (36 °N and 3 °W app.) in the sub-region III of the Map are the only two truely arid regions. These areas together occupy only 0.5% of the total area of the country. These two areas are designated as Almeria‘a(chǎn)nd Alboran’ respectively. Climatically
48#
發(fā)表于 2025-3-29 20:03:06 | 只看該作者
49#
發(fā)表于 2025-3-30 03:31:41 | 只看該作者
Jordanup to 48 °C have been recorded. Winters are fairly cold, and on the plateau frost and some snow are usual, though not in the lower Jordan Valley. The significant element of the climate of Jordan is rainfall. In the higher parts (i.e. the uplands of Samaria and Judaea and the hills overlooking the ea
50#
發(fā)表于 2025-3-30 06:17:08 | 只看該作者
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