摘要
采用FAO的土地适宜性评价方法,选择了有效土层厚度、土壤质地、土壤盐渍化程度、土壤污染程度、土壤有机质、土壤pH值、坡度和地表稳定性8项指标,对黄土高原沟壑区废弃窑洞土地复垦适宜性进行了评价.结果表明:胡同式废弃窑洞,除土壤有机质为中等适宜等级外,其余7项指标均达到非常适宜等级;靠崖式废弃窑洞的土壤有机质、土壤pH值、地表坡度、地表稳定性4项指标为中等适宜等级,其余4个评价指标均达非常适宜等级,两种类型的废弃窑洞均适宜进行土地复垦;土壤性质对两种类型的废弃窑洞的土地复垦均没有明显的限制,但在土地复垦工程和复垦后的土地利用中需要考虑改善土壤有机质的措施;地表坡度和地表稳定对胡同式废弃窑洞的土地复垦不存在限制性影响,但对靠崖式废弃窑洞的土地复垦存在一定的限制性影响,需要采取工程以及生物措施来改善地表坡度和塌陷对复垦后土地利用的不利影响.
Using the FAO land reclamation suitability assessment method, the land reclamation suita- bility of discarded caves in Xifeng District of Qingyang City were assessed with 8 evaluative factors, such as soil efficacious thickness, soil texture, soil salt, soil pollution, soil organic, soil pH, land scope and ground stability. The results shows that ：all the evaluative factors of land reclamation suitability on the al- ley caves reach quite suitable grade except soil organic is medium suitable grade. Among 8 evaluative fac- tors of land reclamation suitability on the hillside caves, soil organic, soil pH, land scope and ground stabili- ty reach medium suitable grade while the other four evaluative factors reach quite suitable grade. So this two kinds of discarded caves are suitable for soil reclamation. Soil properties have no significant limits on the land reclamation of this two kinds of discarded caves. Land scope and ground stability have no limiting effects on the land reclamation of the alley caves, while they have certain influence on the land reclamation of the hillside caves, so it is need to use engineering, biological and organic measures to eliminate these ad- verse effects.
出处
《甘肃农业大学学报》
CAS
CSCD
北大核心
2012年第3期107-110,共4页
Journal of Gansu Agricultural University
基金
国土资源部公益性行业科研专项(201111015-02)
