河北农业大学学报
河北農業大學學報
하북농업대학학보
JOURNAL OF AGRICULTURAL UNIVERSITY OF HEBEI
2010年
1期
12-16,26
,共6页
李爽%纪晓林%黄选瑞%李玉灵%吕海燕%LV Hai-yan
李爽%紀曉林%黃選瑞%李玉靈%呂海燕%LV Hai-yan
리상%기효림%황선서%리옥령%려해연%LV Hai-yan
黄柳%生物沙障%防风阻沙%土壤改良
黃柳%生物沙障%防風阻沙%土壤改良
황류%생물사장%방풍조사%토양개량
Salix gordejevii%biological sand obstacle%shelter wind and prevention sand%soil improvement
流沙固定及土壤改良是冀北沙漠化土地植被恢复与重建技术体系的关键环节之一.本研究通过对冀北沙漠化土地黄柳生物沙障内与裸露沙地的风速、积沙量及土壤理化性质的观测分析,研究了黄柳生物沙障的防风阻沙效益及土壤改良效益.结果表明:黄柳沙障后1 m,0.5 m高度处的防风效能为28.69%,黄柳沙障内下垫面粗糙度为裸露沙地的4.5倍,黄柳基部积沙量为0.09 m~3.黄柳沙障内0~10 cm、10~20 cm、20~40 cm土壤极粗砂粒(>1.0 mm)含量分别比裸露沙地减少了92.84%、95.38%、82.85%,细砂粒(0.25~0.1 mm)含量则分别比裸露沙地增加了57.09%、44.93%、46.37%,土壤非毛管孔隙度较裸露沙地提高了24.85%、41.30%、22.86%.黄柳沙障内表层土壤有机质含量、微生物总量分别比裸露沙地高出30.93%、54.54%,沙障内土壤酶活性亦有增强,其中过氧化氢酶活性变化明显,其活性在0~40 cm土层比裸露沙地高出37.69%.
流沙固定及土壤改良是冀北沙漠化土地植被恢複與重建技術體繫的關鍵環節之一.本研究通過對冀北沙漠化土地黃柳生物沙障內與裸露沙地的風速、積沙量及土壤理化性質的觀測分析,研究瞭黃柳生物沙障的防風阻沙效益及土壤改良效益.結果錶明:黃柳沙障後1 m,0.5 m高度處的防風效能為28.69%,黃柳沙障內下墊麵粗糙度為裸露沙地的4.5倍,黃柳基部積沙量為0.09 m~3.黃柳沙障內0~10 cm、10~20 cm、20~40 cm土壤極粗砂粒(>1.0 mm)含量分彆比裸露沙地減少瞭92.84%、95.38%、82.85%,細砂粒(0.25~0.1 mm)含量則分彆比裸露沙地增加瞭57.09%、44.93%、46.37%,土壤非毛管孔隙度較裸露沙地提高瞭24.85%、41.30%、22.86%.黃柳沙障內錶層土壤有機質含量、微生物總量分彆比裸露沙地高齣30.93%、54.54%,沙障內土壤酶活性亦有增彊,其中過氧化氫酶活性變化明顯,其活性在0~40 cm土層比裸露沙地高齣37.69%.
류사고정급토양개량시기북사막화토지식피회복여중건기술체계적관건배절지일.본연구통과대기북사막화토지황류생물사장내여라로사지적풍속、적사량급토양이화성질적관측분석,연구료황류생물사장적방풍조사효익급토양개량효익.결과표명:황류사장후1 m,0.5 m고도처적방풍효능위28.69%,황류사장내하점면조조도위라로사지적4.5배,황류기부적사량위0.09 m~3.황류사장내0~10 cm、10~20 cm、20~40 cm토양겁조사립(>1.0 mm)함량분별비라로사지감소료92.84%、95.38%、82.85%,세사립(0.25~0.1 mm)함량칙분별비라로사지증가료57.09%、44.93%、46.37%,토양비모관공극도교라로사지제고료24.85%、41.30%、22.86%.황류사장내표층토양유궤질함량、미생물총량분별비라로사지고출30.93%、54.54%,사장내토양매활성역유증강,기중과양화경매활성변화명현,기활성재0~40 cm토층비라로사지고출37.69%.
Shifting sand fixation and soil improvement are key aspects of vegetation restoration and reconstruction technology system in desertification land of Northern Hebei. As compared with bare sandy land,this study examined Salix gordejevii sand barrier's ecological effect by observing wind speed,sand collection quantity and soil properties in sandy land with Salix gordejevii sandybarrier. The results showed that the wind break potency is 28.69% at the height of 0.5 m,1 m behind Salix gordejevii sandy barrier. The ground roughness in sandy land with Salix gordejevii is 4.5 times of the bare sandy land. The coarse sand particle(>1.0 mm) at the 0~10 cm,10~20 cm,20~40 cm depth soil layer decreased by 92.84%,95.38%,82.85% respectively,and the fine sand increased by 57.09%,44.93%,46.37%,compared with those in bare sandy land. The soil organic matter content in sandy land with Salix gordejevii sandy barrier increased by 30. 93% and the soil microorganism amount improved by 54.54%. Salix gordejevii sandybarrier had enhanced soil enzyme activities also and soil catalase activities improved obviously by 37.69% at the 0~40 cm depth soil layer.