CAJ | 학술논문

通过弃耕砂田人工造林试验,并且以相邻的农作物砂田和原生地裸地为对照,对弃耕砂田造林地土壤水分生态进行观测研究,结果表明:在整个观测期内,弃耕砂田灌木造林地0～40 cm层土壤含水量平均为12.6%,与农作物砂田、原生地裸地含水量相比,分别高出9.5%和40.7%,这说明弃耕砂田的保水效果虽较新砂田有所下降,但较原生地裸地仍具有较好的水分保持能力;在整个生长期内,弃耕砂田灌木造林地土壤水分变化虽有上下波动,但总体呈下降趋势,7月份达到最低.而经过8～9月雨季后,土壤含水量得到补充而快速增加;与对照相比,弃耕砂田灌木造林地土壤含水量在(0～10 cm)与农作物砂田和原生地裸地差异不大,但在10～40 cm层的土壤含水量均高于农作物砂田和原生地裸地.观测研究初步表明,弃耕砂田具有植被恢复与利用必要的水分基础条件.
통과기경사전인공조림시험,병차이상린적농작물사전화원생지라지위대조,대기경사전조임지토양수분생태진행관측연구,결과표명:재정개관측기내,기경사전관목조임지0～40 cm층토양함수량평균위12.6%,여농작물사전、원생지라지함수량상비,분별고출9.5%화40.7%,저설명기경사전적보수효과수교신사전유소하강,단교원생지라지잉구유교호적수분보지능력;재정개생장기내,기경사전관목조임지토양수분변화수유상하파동,단총체정하강추세,7월빈체도최저.이경과8～9월우계후,토양함수량득도보충이쾌속증가;여대조상비,기경사전관목조임지토양함수량재(0～10 cm)여농작물사전화원생지라지차이불대,단재10～40 cm층적토양함수량균고우농작물사전화원생지라지.관측연구초보표명,기경사전구유식피회복여이용필요적수분기출조건.
Through artificial afforestation experiment,and setting crop sandy field and bare land as comparison,study on the soil water ecological process under abandoned sandy afforestation field. The results showed as follow, the average soil water content of abandoned sandy afforestation field was 12.6% within 40 cm in observation period,compared with bare land and sandy field, the soil water content of abandoned sandy afforestation field was higher respectively 9.5% and 40.7%.It showed that the water conservation effects of was worse than the new sandy field , but its water conservation benefit was much better than bare land. Although the change of the soil water content of abandoned sandy field was fluctuation, but the overall tendency was drops, and reached the minimum in July. After the rainy season from August to September, the soil water content increased rapidly with water supplement. Compared with the CK, there were no difference about soil water content in farming sandy field and bare land and abandoned sandy field within 10 cm, but that of it was higher than other two field. The observational and primary study showed that the abandoned sandy field has the necessary water condition for revegetation and using.