苦丁茶水土保持功能与经济效益分析  

An Analysis of Soil and Water Conservation Function and Economic Benefit of Ligustrum purpurascens

作　　者：张正海[1] 方向京[1] 孟广涛[1] 李贵祥[1] 柴勇[1] 毛瑢[2] 

机构地区：[1]云南省林业科学院,昆明6502042 [2]昆明理工大学,昆明650093

出　　处：《水土保持研究》2006年第6期215-217,共3页Research of Soil and Water Conservation

基　　金：云南省农业科技攻关项目"金沙江流域退耕还林(竹)还草综合配套技术试验示范"(2001NG55)

摘　　要：对退耕还林地上种植的3年生苦丁茶水土保持功能和经济效益进行了分析。结果表明:苦丁茶可显著改善土壤的物理性状,降低土壤容重,增加土壤孔隙度,提高土壤渗透性能,增强土壤的蓄水保水性能,可以有效地控制土壤侵蚀。可减少73.19%的径流量,削减86.51%的泥沙量。苦丁茶年产375 kg/hm2,直接经济效益达8万元/hm2,其生态效益与经济效益均十分显著。The research was made on soil and water conservation function and economic benefit of Ligustrurn purpurascens planted in Sloping Land Conversion Program. The results showed that planting of Ligustrurn purpurascens can improve the physical characteristics of soil, increase soil porosity and infiltration rate of soils, reduce the soil bulk density, lessen soil erosion and control water and soil loss. The runoff and sediment was decreased 73.19% and 86.51% . And annual dry Ligustrurn purpurascens can reach to 375 kg/hm^2. The direct economic benefit can come to 80 000 yuan/hm^2. Therefore, both ecologic and economic benefits of Ligustrurn purpurascens land are of great significance.

关 键 词：退耕还林 苦丁茶 蓄水保土 经济效益 

分 类 号：S157.43[农业科学—土壤学]