土地利用变化对土壤肥力影响研究进展.PDF

20 1 Vo.l 20 No. 1 2007 2 W orld Forestry Research Feb2007 * 1, 2 2 2 1 肖 烨 张于光 张小全 易图永 ( 1 , 4 10128; 2 , , 100091) : 随着人类活动对土地利用的范围不断扩大强度不断加 , 不同的土地利用方式改变了土壤的理化性 质养分状况土壤酶活性, 进而对土壤肥力造成了不同程度的影响文中从土壤微生物养分状况土壤酶 活性和土壤的物理性质 4 个方面综述了土地利用变化对土壤肥力的影响 : 土地利用变化, 土壤酶活性, 土壤有机质, 土壤肥力 : 714 : A : 1001- 4241( 2007) 01- 0006- 04 Review on the Influence of Land Use Changes on Soil Fertility 1, 2 2 2 1 X iao Y e Zhang Yuguang Zhang X iaoquan Y iTuyong ( 1 College of B iosafety cience andTechnology, Hunan Agricu lturalUn iversity, Changsha 410128, Ch ina; 2 Institu te of Forestry Ecology, Environm en t and Protection, Ch inese Academ y of Forestry, the Key Laboratory of Forest Ecology and Environm ent of tate Forestry Adm in istration, Beijing 100091, Ch ina) Abstract: Land use is a general reflection of the human activities of using land and themost exten sive, d irect and profound influence factors to the soil fertility. W ith the intensity and amplification of land use, land use changes mi pacts the soil physicochem ical properties, wh ich d irectly mi pacted the soil fertility, nutrient status and soil enzym e activities. This paper review ed the effect of land use changes on soil fertility follow ing the changes of soilm icrobe, nutrient status, soil enzyme ac tivities and soil physical properties. K ey words: land use changes, soil enzyme activities, soil organ icm atter, soil fertility ,