南京林业大学学报(自然科学版)
南京林業大學學報(自然科學版)
남경임업대학학보(자연과학판)
JOURNAL OF NANJING FORESTRY UNIVERSITY(NATURAL SCIENCE EDITION)
2009年
6期
79-82
,共4页
左智天%金航%田昆%李吉玉%陆梅%向仕敏
左智天%金航%田昆%李吉玉%陸梅%嚮仕敏
좌지천%금항%전곤%리길옥%륙매%향사민
土壤利用类型%土壤微生物活性%土壤酶活性%滇西退化山地
土壤利用類型%土壤微生物活性%土壤酶活性%滇西退化山地
토양이용류형%토양미생물활성%토양매활성%전서퇴화산지
soil utilization types%soil microorganism activity%soil enzyme activity%degenerated mountainous region of western Yunnan
采用野外采样及室内分析的方法,选取人为干扰较小的旱冬瓜(Alnus nepalensis)林作为对照,对不同利用方式下的土壤生化活性进行分析.结果表明:不同利用类型土壤生化活性之间存在较大差异;土壤生化活性,能比较客观地反映土壤肥力质量的差异和退化程度;除了蔗糖酶活性,不同利用类型的其他土壤生化活性指标均达到了显著影响水平;由土壤生化活性均随着土层深度的增加而降低可以看出,土壤利用类型、人为活动对土壤生化活性的影响主要集中在表层(A层);除了氯化作用,不同土层对其他土壤生化活性指标均达到了显著影响水平.研究区旱冬瓜林上壤性状较好,其他5种利用类型土壤均存在不同程度的退化.
採用野外採樣及室內分析的方法,選取人為榦擾較小的旱鼕瓜(Alnus nepalensis)林作為對照,對不同利用方式下的土壤生化活性進行分析.結果錶明:不同利用類型土壤生化活性之間存在較大差異;土壤生化活性,能比較客觀地反映土壤肥力質量的差異和退化程度;除瞭蔗糖酶活性,不同利用類型的其他土壤生化活性指標均達到瞭顯著影響水平;由土壤生化活性均隨著土層深度的增加而降低可以看齣,土壤利用類型、人為活動對土壤生化活性的影響主要集中在錶層(A層);除瞭氯化作用,不同土層對其他土壤生化活性指標均達到瞭顯著影響水平.研究區旱鼕瓜林上壤性狀較好,其他5種利用類型土壤均存在不同程度的退化.
채용야외채양급실내분석적방법,선취인위간우교소적한동과(Alnus nepalensis)림작위대조,대불동이용방식하적토양생화활성진행분석.결과표명:불동이용류형토양생화활성지간존재교대차이;토양생화활성,능비교객관지반영토양비력질량적차이화퇴화정도;제료자당매활성,불동이용류형적기타토양생화활성지표균체도료현저영향수평;유토양생화활성균수착토층심도적증가이강저가이간출,토양이용류형、인위활동대토양생화활성적영향주요집중재표층(A층);제료록화작용,불동토층대기타토양생화활성지표균체도료현저영향수평.연구구한동과림상양성상교호,기타5충이용류형토양균존재불동정도적퇴화.
To understand the degradation degree of soil in different soil-utilization ways, with drought white gourd forest witless jamming as biochemical activity of soil with different utilization ways were analyzed by the method of field sampling and laboratory analysis. The results indicated that soil biochemical activities were different under different utilization types, which reflected the difference of soil fertilization and degradation degree. The different land utilization had significant effect on soil biochemical activities except for sugar activities. The effect of land utilization and human activities were mainly on the land surface (A layer) since the soil biochemical activities decreased along with the deepening of soil. Different land layer also had significant effect on soil biochemical activities except for ammonification. The soil characters in the drought white gourd forest was better than others, and the other S utilization types of soils had degradation at different degree.