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干旱区高强度开采地表裂缝对土壤微生物学特性和植物群落的影响

王锐 马守臣 张合兵 许传阳 郭增长

王锐, 马守臣, 张合兵, 许传阳, 郭增长. 干旱区高强度开采地表裂缝对土壤微生物学特性和植物群落的影响[J]. 环境科学研究, 2016, 29(9): 1249-1255.
引用本文: 王锐, 马守臣, 张合兵, 许传阳, 郭增长. 干旱区高强度开采地表裂缝对土壤微生物学特性和植物群落的影响[J]. 环境科学研究, 2016, 29(9): 1249-1255.
WANG Rui, MA Shouchen, ZHANG Hebing, XU Chuanyang, GUO Zengzhang. Effects of Surface Cracks Caused by High Intensity Coal Mining on Soil Microbial Characteristics and Plant Communities in Arid Regions[J]. Research of Environmental Sciences, 2016, 29(9): 1249-1255.
Citation: WANG Rui, MA Shouchen, ZHANG Hebing, XU Chuanyang, GUO Zengzhang. Effects of Surface Cracks Caused by High Intensity Coal Mining on Soil Microbial Characteristics and Plant Communities in Arid Regions[J]. Research of Environmental Sciences, 2016, 29(9): 1249-1255.

干旱区高强度开采地表裂缝对土壤微生物学特性和植物群落的影响

基金项目: 国家自然科学基金项目(41541014);国家自然科学基金委员会与神华集团有限责任公司联合资助项目(U1261206);河南省教育厅科学技术研究重点项目(14A180012)

Effects of Surface Cracks Caused by High Intensity Coal Mining on Soil Microbial Characteristics and Plant Communities in Arid Regions

  • 摘要: 为了研究高强度开采地表裂缝对土壤微生物特性和植物群落的影响,以鄂尔多斯盆地腹地的神府-东胜矿区上湾煤矿开采沉陷区为研究对象,通过野外调查和试验分析裂缝两侧土壤和植物特征.结果表明:裂缝导致其两侧0~120 cm范围内土壤水分和养分流失,距裂缝越近,土壤含水量和w(碱解氮)越低.与距裂缝200 cm处相比,裂缝上0~40 cm范围内土壤含水量和w(碱解氮)分别降低16.8%和29.9%;裂缝下0~40 cm范围内土壤含水量和w(碱解氮)分别降低27.8%和42.2%.地表裂缝显著减少了其两侧0~80 cm范围内土壤中微生物数量,但超过80 cm时则影响不显著.在地表裂缝两侧0~120 cm范围内土壤脲酶和蔗糖酶活性被显著抑制,但当距离裂缝超过120 cm时,裂缝则对两种土壤酶的活性没有显著影响.地表裂缝还会影响植物含水量,距裂缝越近植物含水量越低.与距裂缝200 cm处的植物含水量相比,在裂缝上、下0~40 cm范围内植物含水量分别降低8.4%、4.5%.地表裂缝通过干扰土壤理化性质和植物对水分的吸收,进而影响其生长,距裂缝两侧0~80 cm范围内草本植物的生物量和盖度显著减少,但超过120 cm时裂缝对植物生物量和盖度的影响不显著.

     

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  • 收稿日期:  2016-01-11
  • 修回日期:  2016-05-11
  • 刊出日期:  2016-09-25

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