水分是黄土高原半干旱区林草植被建设的主要限制因子。
Water is the primary limiting factor for forest and grass vegetation construction in semi-acid soils of the Loess Plateau area.
山西省地处黄土高原东部，属我国北方典型的半干旱区。
Shanxi Province, at the east of the Loess Plateau, is located in the typical semi-arid region in northern China.
结果表明：（1）黄土高原半干旱区不同树种林地及荒坡土壤含水量很低，接近于凋萎湿度。
The results were as the following:(1) In semi-arid region of the Loess Plateau, the soil moisture contents of forestland and wasteland were low, near to the wilting humidity.
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