| 荒漠草原不同带间距人工柠条林平茬对林间生境的影响 |
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| 引用本文： | 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. |
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| 作者姓名： | 周静静 马红彬 周瑶 蔡育荣 吴兴旺 宿婷婷 贾希洋 |
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| 作者单位： | 1.宁夏大学西北土地退化与生态恢复国家重点实验室培育基地,宁夏 银川 750021；2.宁夏大学农学院,宁夏 银川 750021 |
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| 基金项目： | 宁夏回族自治区科技支撑计划，中国科学院"西部之光"人才培养引进计划项目 |
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| 摘 要： | 研究不同带间距柠条林平茬后林间生境的变化对人工柠条中间锦鸡儿的种植和平茬饲用具有重要意义。以荒漠草原分布的4, 6和8 m带间距中间锦鸡儿林间草原为对象,于2015年4月对3种带间距柠条林进行齐地平茬,研究不同带间距中间锦鸡儿平茬后林间植被、土壤理化性质、气温、风速、风蚀量等变化。结果表明,1)8 m带间距的林间多年生草本物种比例、植被盖度和密度最高(P<0.05),6和4 m间距植被盖度密度接近;3种间距的林间地上生物量、物种多样性无显著差异(P>0.05)。2)随着带间距增加,土壤粉粒含量以及土壤有机质、全氮、速效磷、速效钾含量总体呈现上升趋势。但土壤水分以6 m带间距最高,4 m带间距最低。3)林间平均气温以4 m带间距最高,8 m带间距最低,风速大小正好相反;土壤风蚀量呈现6 m带间距最高(P<0.05),4和8 m带间距最低。4)相关性分析表明,植物多样性与土壤有机质、全氮、粉粒含量正相关,土壤有机质含量与土壤粉粒含量、植被盖度呈正相关。研究认为,8 m人工中间锦鸡儿林种植间距对林间植被多样性增加、土壤质量改善和土壤风蚀减少更为有利。
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| 关 键 词： | 荒漠草原 中间锦鸡儿 平茬 林间植被土壤 风蚀量 |
| 收稿时间： | 2016-10-13 |
| 修稿时间： | 2017-01-10 |
Effects of belt-spacing of artificial Caragana intermedia stands on the ecology of woodland on the Desert Steppe |
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| ZHOU Jing-Jing,MA Hong-Bin,ZHOU Yao,CAI Yu-Rong,WU Xing-Wang,SU Ting-Ting,JIA Xi-Yang.Effects of belt-spacing of artificial Caragana intermedia stands on the ecology of woodland on the Desert Steppe[J].Acta Prataculturae Sinica,2017,26(5):40-50. |
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| Authors: | ZHOU Jing-Jing MA Hong-Bin ZHOU Yao CAI Yu-Rong WU Xing-Wang SU Ting-Ting JIA Xi-Yang |
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| Institution: | 1.State Key Laboratory Breeding Base of Land Degradation and Ecological Restoration of North-western China, Ningxia University, Yinchuan 750021, China;2.Agricultural College, Ningxia University, Yinchuan 750021, China |
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| 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. |
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| Keywords: | desert steppe Caraganaintermedia stumping woodland plants and soil wind erosion |
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