草业学报2017，Vol.26Issue(5)：40-50,11.DOI:10.11686/cyxb2016387
荒漠草原不同带间距人工柠条林 平茬对林间生境的影响
Effects of belt-spacing of artificial Caragana intermedia stands on the ecology of woodland on the Desert Steppe
摘要
Abstract
The spacing of Caraganaintermedia belts in plantations can markedly affect the ecology of the sur-rounding woodland.In this study,we evaluated the changes in the woodland habitat after cutting C.interme-diaforests with different spacings of C.intermediabelts.The study site was a forest grassland on the desert steppe withC.intermediabelts planted with 4 m,6 m,and 8 m spacings.The soil physical and chemical properties,air temperature,wind speed,and amount of wind erosion were evaluated to determine the effects of different belt spacings of C.intermedia forest after stumping (cutting )C.intermedia plants to a stubble height of 0 cm in April 2015.The main findings were as follows:1)The forest grassland with 8 m spacing of C.intermediabelts showed the highest proportion of perennial herbaceous species,vegetation coverage,and vegetation density (P<0.05),but vegetation coverage did not differ significantly between the 4 m and 6 mC. intermediabelt-spacing treatments.There was no difference in aboveground biomass and species diversity a-mong the three treatments (P>0.05).2)As the belt spacing increased,the soil fine particle content,soil or-ganic matter content,total nitrogen content,available phosphorus content,and available potassium content tended to increase.The soil water content was highest in the forest with 6 m belt spacing,and lowest in the forest with 4 m belt spacing.3)The average air temperature was highest in the forest with 4 m belt spacing, and lowest in the forest with 8 m belt spacing,while wind speed showed the opposite trend.Wind erosion of soil was highest in the forest with 6 m belt spacing (P<0.05),and lowest in the forests with 4 m and 8 m belt spacings.4)Correlation analyses indicated that plant diversity was positively correlated with soil organic mat-ter content,soil total nitrogen content,and soil fine particle content,and that soil organic matter content was positively correlated with soil fine particle content and vegetation coverage.These results indicate that C.in-termediaforests with 8 m belt spacing have the advantages of increased vegetation diversity,better soil quali-ty,and lower soil wind erosion of the surrounding forest grassland.关键词
荒漠草原/中间锦鸡儿/平茬/林间植被土壤/风蚀量Key words
desert steppe/Caraganaintermedia/stumping/woodland plants and soil/wind erosion引用本文复制引用
周静静,马红彬,周瑶,蔡育荣,吴兴旺,宿婷婷,贾希洋..荒漠草原不同带间距人工柠条林 平茬对林间生境的影响[J].草业学报,2017,26(5):40-50,11.基金项目
宁夏回族自治区科技支撑计划(2014)和中国科学院"西部之光"人才培养引进计划项目(XAB2015A10)资助. （2014）
