黄土峁状丘陵生态环境建设模式及关键技术研究  

Research on Key Technique and Building Model of Ecological Environment at Hilly and Gully Area in North of Shaanxi

作　　者：张海[1] 王延平[1] 高鹏程[1] 

机构地区：[1]西北农林科技大学资源环境学院,陕西杨凌712100

出　　处：《水土保持研究》2003年第4期8-9,34,共3页Research of Soil and Water Conservation

摘　　要：针对黄土高原峁状丘陵区之特点,以流域为单元将治理区土地资源划分为川坝地、≤15°坡地梯田、15～25°旱梯田及25°以上陡坡地4种类型,并提出不同的治理方法,解决了本区粮食基本自给及坡地高效治理与合理利用问题,使治理区林草覆盖率达到46.1%,人均纯收入2056.5元,比对照分别提高了29%及42.7%,土壤侵蚀模数下降到1638.4t/(km2·a),比对照下降了92.5%,实现了生态环境的初步好转。The field resource is divided into four types including the flatland, the slopeland with degree less than 15, the slopeland with degree between 15 and 25, and the slopeland with degree more than 25. The different control ways are put forword based on the characteristic of hilly and gully area of Loess Plateau, which has sloved the question of selfsufficiency in grain of farmers and higheffective control and reasonable utilization of slopeland. The coverage percentage of grass and tree reach 46.1%, and the net income per capital is RMB 2 056.5, which is 52% and 42.7% more than the CK respectively. The runoff model of soil is 1 638.4 t/(km2·a), which is 92.5% less than the CK. The ecological environment is better than before.

关 键 词：生态环境 水保持 丘陵 梯田 

分 类 号：X171.1[环境科学与工程—环境科学]