兰州大学学报（自然科学版）
蘭州大學學報（自然科學版）
란주대학학보（자연과학판）
JOURNAL OF LANZHOU UNIVERSITY（NATURAL SCIENCES）
2013年
5期
598-603,610
,共7页
植被快速扩繁移植%多年冻土扰动区%青藏高原
植被快速擴繁移植%多年凍土擾動區%青藏高原
식피쾌속확번이식%다년동토우동구%청장고원
rapid vegetation cultivation and transplant%disturbed permafrost zone%Qinghai-Tibet Plateau
在青海?西藏±400 kV直流联网工程穿越的五道梁多年冻土塔基施工扰动区,采用植被快速扩繁移植技术对植被进行了移植并对移植后群落特征变化和浅层土壤的水热变化进行了研究.结果表明：塔基施工扰动区土壤养分流失严重,给施工后的植被恢复造成很大困难.采用植被快速扩繁移植技术对扰动区进行植被恢复后,扰动区多年冻土温度场能在短时间内趋于稳定,有利于塔基基础的稳定.同时,快速扩繁移植两年后植物群落盖度为(92.00±5.53)%,群落地上生物量和地下生物量分别达到2471.08±186.73 g/m2,7028.61±382.43 g/m2.可见,扩繁移植后人工植物群落特征表现出对多年冻土扰动区高寒干旱地区气候和土壤环境具有较好的适应性.只要采用高原乡土植物种类并采取相应的植被恢复技术措施,青藏高原多年冻土扰动区的植被快速恢复是可行的.
在青海?西藏±400 kV直流聯網工程穿越的五道樑多年凍土塔基施工擾動區,採用植被快速擴繁移植技術對植被進行瞭移植併對移植後群落特徵變化和淺層土壤的水熱變化進行瞭研究.結果錶明：塔基施工擾動區土壤養分流失嚴重,給施工後的植被恢複造成很大睏難.採用植被快速擴繁移植技術對擾動區進行植被恢複後,擾動區多年凍土溫度場能在短時間內趨于穩定,有利于塔基基礎的穩定.同時,快速擴繁移植兩年後植物群落蓋度為(92.00±5.53)%,群落地上生物量和地下生物量分彆達到2471.08±186.73 g/m2,7028.61±382.43 g/m2.可見,擴繁移植後人工植物群落特徵錶現齣對多年凍土擾動區高寒榦旱地區氣候和土壤環境具有較好的適應性.隻要採用高原鄉土植物種類併採取相應的植被恢複技術措施,青藏高原多年凍土擾動區的植被快速恢複是可行的.
재청해?서장±400 kV직류련망공정천월적오도량다년동토탑기시공우동구,채용식피쾌속확번이식기술대식피진행료이식병대이식후군락특정변화화천층토양적수열변화진행료연구.결과표명：탑기시공우동구토양양분류실엄중,급시공후적식피회복조성흔대곤난.채용식피쾌속확번이식기술대우동구진행식피회복후,우동구다년동토온도장능재단시간내추우은정,유리우탑기기출적은정.동시,쾌속확번이식량년후식물군락개도위(92.00±5.53)%,군락지상생물량화지하생물량분별체도2471.08±186.73 g/m2,7028.61±382.43 g/m2.가견,확번이식후인공식물군락특정표현출대다년동토우동구고한간한지구기후화토양배경구유교호적괄응성.지요채용고원향토식물충류병채취상응적식피회복기술조시,청장고원다년동토우동구적식피쾌속회복시가행적.
At the tower footing construction disturbance zone of ± 400 kV DC power transmission line from Qinghai to Tibet crossing through the Wudaoliang permafrost region, the technology of rapid cultivation and transplant of vegetation was used to restore vegetation rapidly. Changes in the vegetation community character-istics and the shallow soil temperatures and moistures were studied at the disturbed zone with rapid restoration. The results showed that at the disturbed zone, the soil nutrients were lost seriously, making the vegetation restoration to be very di?cult. When the disturbed zone was restored with the technology of rapid vegetation cultivation and transplant, the temperature field of the disturbed permafrost zone could be stabilized in the short term, which was beneficial to the stability of the tower foundation. After two years of vegetation rapid cultivation and transplant, the plant community coverage reached (92.00±5.53)%, and the aboveground and below-ground community biomass reached 2 471.08±186.73 g/m2 and 7 028.61±382.43 g/m2, respectively. So, the artificial plant community characteristics of the vegetation treated with rapid cultivation and transplant showed a good adaptability to the cold-arid climate and soil environment of the disturbed permafrost zone. As long as native plant species were used and suitable vegetation restoration technologies were adopted, rapid vegetation restoration at the disturbed permafrost zones on the Qinghai-Tibet Plateau was feasible.
