生态环境学报
生態環境學報
생태배경학보
Ecology and Environment Sciences
2015年
9期
1441-1446
,共6页
亚热带红壤丘陵区%不同人工林型%土壤理化性质%土壤微生物类群%土壤酶活性
亞熱帶紅壤丘陵區%不同人工林型%土壤理化性質%土壤微生物類群%土壤酶活性
아열대홍양구릉구%불동인공림형%토양이화성질%토양미생물류군%토양매활성
subtropical red soil hilly region%different artificial forestry%soil physio-chemical properties%soil microbial groups%soil enzyme activities
为了探讨亚热带红壤丘陵区不同人工林对土壤理化性质、微生物类群和酶活性的影响。以亚热带红壤丘陵区的纯樟树林(CC)、纯杉木林(CL)、杉木樟树混交林(CLCC)、自然恢复地(受到人为干扰)(NR)作为研究对象,并以附近的疏草荒地(GD)作为对照(CK),通过调查取样和实验分析相结合的方法,分析不同人工林型中不同土层(0~10、10~20和20~40 cm)土壤的理化性质、微生物类群和酶活性的变化。结果表明,(1)与对照相比,不同林型下土壤细菌、真菌和放线菌总数均显著增加,依次为微生物总数(CLCC)>微生物总数(CC)>微生物总数(CL)>微生物总数(NR)>微生物总数(CK)(P<0.05)。(2)土壤脲酶(URE)活性在不同林型下的大小顺序为脲酶(CC)>脲酶(CLCC)>脲酶(CL)>脲酶(NR)>脲酶(CK)(P<0.05);蔗糖酶(INV)活性的大小顺序为蔗糖酶(CC)>蔗糖酶(NR)>蔗糖酶(CLCC)>蔗糖酶(CK)>蔗糖酶(CL)(P<0.05);酸性磷酸酶(APE)活性的大小顺序为酸性磷酸酶(CC和CLCC)>酸性磷酸酶(NR)>酸性磷酸酶(CL)>酸性磷酸酶(CK)(P<0.05)。(3)在剖面层次上,土壤微生物类群和酶活性也有明显的层次性,即随着土层的增加而减小。(4)相关分析表明:土壤细菌、真菌与脲酶、酸性磷酸酶之间具有显著或极显著的相关性(P<0.05或P<0.01);土壤微生物类群和酶活性与土壤有机质(SOM)、全氮(TN)和有效氮(AN)之间具有极显著的相关性(P<0.01)。研究结果表明退耕还林(草)可增加土壤微生物类群的数量和土壤酶活性,促进土壤物理性状的改善和肥力的提高。
為瞭探討亞熱帶紅壤丘陵區不同人工林對土壤理化性質、微生物類群和酶活性的影響。以亞熱帶紅壤丘陵區的純樟樹林(CC)、純杉木林(CL)、杉木樟樹混交林(CLCC)、自然恢複地(受到人為榦擾)(NR)作為研究對象,併以附近的疏草荒地(GD)作為對照(CK),通過調查取樣和實驗分析相結閤的方法,分析不同人工林型中不同土層(0~10、10~20和20~40 cm)土壤的理化性質、微生物類群和酶活性的變化。結果錶明,(1)與對照相比,不同林型下土壤細菌、真菌和放線菌總數均顯著增加,依次為微生物總數(CLCC)>微生物總數(CC)>微生物總數(CL)>微生物總數(NR)>微生物總數(CK)(P<0.05)。(2)土壤脲酶(URE)活性在不同林型下的大小順序為脲酶(CC)>脲酶(CLCC)>脲酶(CL)>脲酶(NR)>脲酶(CK)(P<0.05);蔗糖酶(INV)活性的大小順序為蔗糖酶(CC)>蔗糖酶(NR)>蔗糖酶(CLCC)>蔗糖酶(CK)>蔗糖酶(CL)(P<0.05);痠性燐痠酶(APE)活性的大小順序為痠性燐痠酶(CC和CLCC)>痠性燐痠酶(NR)>痠性燐痠酶(CL)>痠性燐痠酶(CK)(P<0.05)。(3)在剖麵層次上,土壤微生物類群和酶活性也有明顯的層次性,即隨著土層的增加而減小。(4)相關分析錶明:土壤細菌、真菌與脲酶、痠性燐痠酶之間具有顯著或極顯著的相關性(P<0.05或P<0.01);土壤微生物類群和酶活性與土壤有機質(SOM)、全氮(TN)和有效氮(AN)之間具有極顯著的相關性(P<0.01)。研究結果錶明退耕還林(草)可增加土壤微生物類群的數量和土壤酶活性,促進土壤物理性狀的改善和肥力的提高。
위료탐토아열대홍양구릉구불동인공림대토양이화성질、미생물류군화매활성적영향。이아열대홍양구릉구적순장수림(CC)、순삼목림(CL)、삼목장수혼교림(CLCC)、자연회복지(수도인위간우)(NR)작위연구대상,병이부근적소초황지(GD)작위대조(CK),통과조사취양화실험분석상결합적방법,분석불동인공림형중불동토층(0~10、10~20화20~40 cm)토양적이화성질、미생물류군화매활성적변화。결과표명,(1)여대조상비,불동림형하토양세균、진균화방선균총수균현저증가,의차위미생물총수(CLCC)>미생물총수(CC)>미생물총수(CL)>미생물총수(NR)>미생물총수(CK)(P<0.05)。(2)토양뇨매(URE)활성재불동림형하적대소순서위뇨매(CC)>뇨매(CLCC)>뇨매(CL)>뇨매(NR)>뇨매(CK)(P<0.05);자당매(INV)활성적대소순서위자당매(CC)>자당매(NR)>자당매(CLCC)>자당매(CK)>자당매(CL)(P<0.05);산성린산매(APE)활성적대소순서위산성린산매(CC화CLCC)>산성린산매(NR)>산성린산매(CL)>산성린산매(CK)(P<0.05)。(3)재부면층차상,토양미생물류군화매활성야유명현적층차성,즉수착토층적증가이감소。(4)상관분석표명:토양세균、진균여뇨매、산성린산매지간구유현저혹겁현저적상관성(P<0.05혹P<0.01);토양미생물류군화매활성여토양유궤질(SOM)、전담(TN)화유효담(AN)지간구유겁현저적상관성(P<0.01)。연구결과표명퇴경환림(초)가증가토양미생물류군적수량화토양매활성,촉진토양물이성상적개선화비력적제고。
The aim of this study was to explore effects of different artificial forestry on soil physio-chemical properties, microbial groups and enzyme activities in subtropical red soil hilly region. Taking four kinds of artificial forestry (C. camphora (CC), C. lanceolata (CL), C. lanceolata-C. camphora (CLCC) and Natural restoring (NR)) and barren grassland (CK) nearby as test objects, soil samples from depths of 0~10, 10~20 and 20~40 cm were collected to study the effects of four kinds of artificial forestry on soil physio-chemical properties, microbial groups and enzyme activities through the combination of sample investigation and experimental analysis. The results showed that:(1) Compared with barren grassland (CK), the total number of microbes in different artificial forestry were followed the order as CLCC>CC>CL>NR>CK (P<0.05). (2) The activities of soil urease (URE) in different artificial forestry were followed the order as CC>CLCC>CL>NR>CK (P<0.05);Invertase (INV), CC>NR>CLCC>CK>CL (P<0.05), Acidity phosphatase (APE), CC and CLCC>NR>CL>CK (P<0.05). (3) In the profile, soil microbial groups and enzyme activities decrease with the increase of soil depth. 4)Correlation analysis showed that the contents of bacteria and fungi have a significant or very significantly positive correlation with URE and APE (P<0.05 or P<0.01);the soil microbial groups and enzyme activities have a very significantly positive correlation with soil organic matter (SOM), total nitrogen (TN) and available nitrogen (AN) (P<0.01). All the results showed that returning farmland to forests (grass) could increase the number of soil microbial groups and the activities of soil enzyme, promoting the improvement of soil physical properties and the heighten of soil fertility.