摘要
基于野外采样、定点观测和室内实验,研究了青海省湟水河流域不同退耕还林模式土壤效应。结果表明,青海省湟水河流域相同林龄(8a)的不同退耕还林模式(5种)的土壤有机质含量、总孔隙度和微生物总量大小顺序为:云杉桦树混交>桦树>云杉沙棘混交>云杉>沙棘>农田;土壤容重和pH值大小顺序为:云杉桦树混交<桦树<云杉沙棘混交<云杉<沙棘<农田;土壤持水性大小顺序为:云杉桦树混交>沙棘>桦树>云杉>农田;土壤可蚀性K因子大小顺序为:沙棘<云杉桦树混交<云杉沙棘混交<桦树<云杉<农田;缓解日温变化效应顺序为:云杉桦树混交>桦树>云杉沙棘混交>沙棘>云杉>农田,土壤微生物总量中细菌>放线菌>真菌,其中细菌占95%以上。
Based on sample collection,field monitoring,and indoor experiments,the effects of different types of Grain-for-Green on soil quality were investigated in Huangshui drainage area of Qinghai Province.The results of sample analysis indicate the forests with the same age（8 a） in the order of decreasing soil organic matters,total porosity,and total amount of microorganism as： mixture of Picea crassifolia and birchbirchmixture of Picea crassifolia and Hippophae rhamnoidesPicea crassifoliaHippophae rhamnoidesfarmland;in order of decreasing soil bulk density and pH value as： mixture of picea crassifolia and birchbirchmixture of Picea crassifolia and Hippophae rhamnoidesPicea crassifoliaHippophae rhamnoidesfarmland;in the order of decreasing water holding capacity as： mixture of Picea crassifolia and birchHippophae rhamnoidesbirchPicea crassifoliafarmland;in the order of decreasing erosion resistance（K） as： Hippophae rhamnoidesmixture of Picea crassifolia and birchmixture of Picea crassifolia and Hippophae rhamnoidesbirchPicea crassifoliafarmland;and in the order of decreasing heat capacity as： mixture of Picea crassifolia and birchbirchmixture of Picea crassifolia and Hippophae rhamnoidesHippophae rhamnoidesPicea crassifoliafarmland.The results also show soil microorganisms in the order of decreasing total amount as： bacteriaactinomycetes epiphyte.Specifically,bacteria accounted for over 95 percent of the total microorganism.
出处
《水土保持通报》
CSCD
北大核心
2011年第5期45-48,共4页
Bulletin of Soil and Water Conservation
基金
财政部关于下达2010年中央财政森林生态效益补偿基金的通知(财农[2010]104号)
关键词
湟水河流域
退耕还林
土壤效应
土壤微生物
Huangshui river
grain for green program
soil effects
soil microorganism
