渭北旱塬生态用地降水资源化潜力的估算及评价

Elementary Estimation of Rainfall Resource Availability Potential of Ecological Using Land in Weibei Dryland

针对黄土高原地区水资源严重短缺的态势和生态环境建设的需要,以黄土高原典型地区的渭北旱塬为例,对该区各种生态用地降水资源化理论潜力、可实现潜力和现实潜力进行初步估算,并进行相应评价,结果表明:农、林、牧、果业生产结构布局不合理,使得区内各地、市各种降水资源化潜力差异较大;林地、园地、牧草地的自然降水利用率较大;生态用地降水资源化现实潜力开发度与可实现潜力开发度有11.06%差距,现实潜力开发度与理论潜力开发度相比有36.22%潜力尚待开发。证明该区降水资源化潜力较大,但生态环境建设还是受水资源短缺限制。

To solve water resource shortage and to meet the demand of environment building, and Weibei dryland taking of Loess Plateau as a case study . this paper made an elementary estimation and evaluation of rainfall resource availability potential in ecological using land. The result showed that rainfall resource availability potential of various places was clearly different because patterns of agriculture, forestry, pasture and orchard production were different. The paper will provide theoretical reference to rational exploitation of rainfall and land resource on Loess Plateau.