低山丘陵区不同植被模式水土流失特征及生态效益  

Analyses of the Ecological Benefits and Characteristics of Soil and Water Loss of the Different Vegetation Models in Hilly Regions

作　　者：王健胜[1] 梁亚红[2] 廖秉华[1] 刘沛松[1] 赵干卿[1] 文桢中[1] 

机构地区：[1]平顶山学院低山丘陵区生态修复重点实验室,河南平顶山467000 [2]平顶山学院资源与环境科学学院,河南平顶山467000

出　　处：《湖北农业科学》2014年第14期3290-3293,共4页Hubei Agricultural Sciences

基　　金：国家林业局林业行业公益性科研专项(201004044);平顶山学院高层次人才科研启动项目(2011008/G);河南省教育厅自然科学研究计划项目(12B180025)

摘　　要：通过对河南省鲁山县低山丘陵区5种植被模式主要生态指标的定位检测,分析了其水土流失特征及生态效益。结果表明,侧柏+苜蓿模式的水土流失最严重,其年径流量和年流失泥沙量分别达到13.496m3/hm2和0.135 5 t/hm2,苜蓿的年径流量最小,而刺槐+苜蓿的年流失泥沙量最小;在地上生物总量方面,林草复合植被模式明显大于单一苜蓿植被模式,5种植被模式地上生物总量由大到小依次为速生杨+苜蓿、刺槐+苜蓿、栓皮栎+苜蓿、侧柏+苜蓿、苜蓿;速生杨+苜蓿的年固碳量和年释氧价值均为最高,而苜蓿的年固碳量和年释氧价值最低,林草复合植被模式的生态效益明显优于单一苜蓿植被模式。Based on the fixed-monitoring of the main ecological indexes of the five vegetation models,the characteristics of soil and water loss and the ecological benefits were analyzed in hilly regions in Lushan county of Henan province.The results showed that arborvitae＋alfalfa was the most serious on soil and water loss with its annual runoff and the annual soil loss of 13.496 m3/hm2 and 0.135 5 t/hm2,respectively.The least runoff was found in alfalfa,and the least soil loss was found in locust＋alfalfa.The aboveground biomass of the forestry-grass models was obviously higher than that of alfalfa model.The order of the aboveground biomass for the five vegetations was poplar＋alfalfa＞locust ＋alfalfa＞corkoak ＋alfalfa＞arborvitae ＋alfalfa＞alfalfa.The poplar＋alfalfa was the highest on the carbon sequestration and the oxygen release and alfalfa was the lowest.The further analysis showed that the forestry-grass model was obviously better than alfalfa model on the ecological benefits.

关 键 词：植被模式 水土流失 生态效益 低山丘陵区 

分 类 号：S157[农业科学—土壤学]