【摘要】 采用生态系统健康的理论与方法分析干旱地区生态环境问题具有较强的理论和现实意义 .本研究以沙坡头地区荒漠景观为背景 ,着重探讨干旱区生态系统健康评价方法 ,建立评价指标体系及模型 .研究结果表明 :单种时 ,以密度为 2 5 0 0株 / hm2的油蒿样地最为健康 ;混种时 ,以样地 5最为健康 ,其密度为 5 0 0 0株 / hm2 ,覆盖率亦最大 .该结果说明适当的种植密度和方式是一种值得提倡的经营管理模式更多还原

【Abstract】 Using the theory and technique of ecosystem health to study arid eco environment problem possesses rather good significance in theory and practice.Based on the desert landscape of Shapotou,the paper is emphasized to discuss the arid ecosystem health assessment approach,to establish assessment indexes system and to improve the assessment model.The results indicate,when monoculture,sample 3 is the healthiest,its density is 2 500 plant/hm 2,when mix culture,sample 5 is the healthiest,its density is 5 000 plant/hm 2.This two spots are deserved to promote.更多还原