晋北生态脆弱区人工种源补充对植被的影响研究  

Research on Influence of Man-added Sources on Vegetation in Vulnerable Area of Northern Shanxi Province

作　　者：张志远 

机构地区：[1]忻州市水土保持科学研究所,山西忻州034000

出　　处：《水土保持研究》2009年第4期121-126,共6页Research of Soil and Water Conservation

基　　金：山西省科技攻关项目(052026)

摘　　要：在晋北干旱半干旱生态脆弱区,选择宁武县张家山流域开展水土保持生态修复试验,多方位探讨了生态自然修复下,辅以人工促进措施,对植被恢复的定性定量影响。试验选择乡土树种补充种源,按树种风媒传播范围确定补植密度,因地制宜配置混交方式,采用大营养袋定植等综合技术,提高造林成活率。经过5 a试验,当年造林成活率达90%-95%,保存率达80%-85%,试验区植被盖度达72.2%,年均增幅达8.3%,人工补充种源新增盖度10.6%,新增生物产量33.72%。植被群落逐渐向物种分布均匀,高低错落的结构演替。In vulnerable area of arid and semiarid northern Shanxi organism＇s habits, study on soil and water conservation and ecological restoration was carried out in Zhangjiashan Valley of Ningwu County. Multidirectionally qualitative and quantitative impact to vegetation restoration by artificial measures to promote was discussed. The trial native trees were chosen as the added source of trees. Replanting density was determined according to the wind-borne species scope of the spread. The mixed mode was figured out based on local condition. The integrated technology such as large bags of nutrition field planting was used to improve the survival rate of afforestation. After 5 year test, the survival rate of planted trees has been up to 90-95%, and the reserved rate has been up to 80-85%. The vegetation coverage of experimental zone has been up to 72.2 %, the growth of average annual has been up to 8.3%, the new increased coverage of man-added sources has been up to 10.6%, the new increased biological production has been up to 33.72 %. Vegetation community has been gradually evolved which species distribution was uniform and the structure was scattered.

关 键 词：晋北 生态脆弱区 植被恢复 种源补充 

分 类 号：X171.4[环境科学与工程—环境科学]