防护林科技
防護林科技
방호림과기
PROTECTION FOREST SCIENCE AND TECHNOLOGY
2012年
3期
14-16
,共3页
魏忠平%范俊岗%潘文利%高英旭%马冬菁
魏忠平%範俊崗%潘文利%高英旭%馬鼕菁
위충평%범준강%반문리%고영욱%마동정
小胡杨%苏打盐渍土%植被演替%土壤水分物理性质
小鬍楊%囌打鹽漬土%植被縯替%土壤水分物理性質
소호양%소타염지토%식피연체%토양수분물이성질
Populus simonii×P.euphratica%saline-sodic soil%vegetation succession%soil hydro-physical property
滨海苏打盐渍土修筑台田后种植小胡杨可以成活,18年后小胡杨林分基本郁闭。以未种植树木的台田作为对照(CK),对小胡杨林地内植被演替规律、土壤水分物理性质进行研究。结果表明,小胡杨成林后,林地内植被向良性方向发展,群落生态型由中度耐盐群落演替成轻度耐盐群落,群落高度也由0.2~0.6 m增加到0.5~0.8m,盖度则达到80%~90%,土壤也由苏打盐渍土转变成轻盐碱土;小胡杨可显著降低土壤容重,改善土壤孔隙状况,增加土壤持水性能,使土壤水分物理性质得到显著改良,其中,对0~10 cm土层的改良效果要好于10~30 cm土层。
濱海囌打鹽漬土脩築檯田後種植小鬍楊可以成活,18年後小鬍楊林分基本鬱閉。以未種植樹木的檯田作為對照(CK),對小鬍楊林地內植被縯替規律、土壤水分物理性質進行研究。結果錶明,小鬍楊成林後,林地內植被嚮良性方嚮髮展,群落生態型由中度耐鹽群落縯替成輕度耐鹽群落,群落高度也由0.2~0.6 m增加到0.5~0.8m,蓋度則達到80%~90%,土壤也由囌打鹽漬土轉變成輕鹽堿土;小鬍楊可顯著降低土壤容重,改善土壤孔隙狀況,增加土壤持水性能,使土壤水分物理性質得到顯著改良,其中,對0~10 cm土層的改良效果要好于10~30 cm土層。
빈해소타염지토수축태전후충식소호양가이성활,18년후소호양림분기본욱폐。이미충식수목적태전작위대조(CK),대소호양임지내식피연체규률、토양수분물이성질진행연구。결과표명,소호양성림후,임지내식피향량성방향발전,군락생태형유중도내염군락연체성경도내염군락,군락고도야유0.2~0.6 m증가도0.5~0.8m,개도칙체도80%~90%,토양야유소타염지토전변성경염감토;소호양가현저강저토양용중,개선토양공극상황,증가토양지수성능,사토양수분물이성질득도현저개량,기중,대0~10 cm토층적개량효과요호우10~30 cm토층。
Populus simonii×P.euphratica could survive on the raised fields established on coastal saline-sodic soils.The forests were almost closed in 18 years.Non-forest raised fields were regarded as control(CK),vegetation succession law soil hydro-physical properties of P.simonii×P.euphratica were studied.Result shows that: vegetation in the forests developed well when P.simonii×P.euphratica stands were established;the ecotype of the community were turned into light salt-tolerant from moderate salt-tolerant,and the average height of community increased to 0.5-0.8m from 0.2-0.6m and the coverage reached 80%-90%;the soils were changed into light saline-alkali from saline-sodic.The soil bulk density was significantly reduced and soil porosity and water-holding properties were increased by P.simonii×P.euphratica,and the soil hydro-physical properties were significantly improved.Among them,the ameliorated effects in 0-10 cm layer of soil were better than that in 10-30 cm layer.