LAI Xifu,JIAO Xudong,ZHAO Ming,et al.Study on Remediation Technology and Afforestation Mode Decision of Desertification Woodland in Minqin[J].Research of Soil and Water Conservation,2015,22(01):269-273.
民勤沙化退耕地整治技术及造林模式选择研究
- Title:
- Study on Remediation Technology and Afforestation Mode Decision of Desertification Woodland in Minqin
- 分类号:
- X171.4
- 摘要:
- 为掌握沙化退耕地植被恢复情况和最佳的适宜该地区的造林模式，以沙化退耕地整治技术及模式选择指导思想为基础，通过对民勤县沙化退耕地植被现状的调查，研究了不同年代沙化退耕地上植物群落的特性，同时分析了沙化退耕地上不同密度下梭梭和柠条的生长状况。结果表明：随着退耕时间的延长，沙化退耕地植物群落逐渐向单一化方向发展，且植被均匀度降低，土地潜在沙化的可能性提高；不同密度下梭梭的生长状况存在明显差异，当造林密度为2 m×8 m（615株/hm2）时，梭梭的生长状况最好；柠条的生长状况受种植密度和土壤质地的影响，同时灌水与否对柠条的生长也有一定的影响。
- Abstract:
- In order to understand the recovery of desertification woodland vegetation restoration and select the best afforestation mode in Minqin area, a survey on desertification woodland was conducted based on the remediation technology of desertification woodland and mode selection guidelines. The characteristics of plant communities growing on desertification woodland from different restoration times were studied, and growth conditions of Haloxylon ammodendron and Caragana intermedia under different densities were analyzed as well. The results showed that with the abandoned time extension, the plant communities simplified gradually, and the uniformity of plants reduced, while the potential possibility of land desertification increased. Significant differences of H.ammodendron growth conditions under different densities were found. H.ammodendron grew best under the 2 m×8 m (615 plants/hm2) density. While the growth of C. intermedia was affected by planting density and soil texture, and irrigation or rainfed also had a certain influence. Key words:ecological restoration; desertification woodland; renovated technique; mode decision
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备注/Memo
收稿日期:2013-12-03;改回日期:2014-02-20。
基金项目:国家十一五科技支撑计划项目“民勤绿洲退耕地沙漠化、盐碱化防治与生态建设试验示范”（2007BAD46B04）
作者简介:来锡福(1964-),男,甘肃古浪人,硕士研究生,高级工程师,主要从事干旱造林技术及林业有害生物防治技术研究。E-mail:gswwdqsfz@126.com
通讯作者:焦旭东(1987-),男,甘肃张掖人,硕士研究生,工程师,主要从事林业有害生物防治技术研究。E-mail:gswwdqsfz@126.com