荒漠-绿洲交错带扬黄新灌区土地退化防治的模式与机制——以永宁县园艺村为例  

The Model and Mechanism to Combat Land Degradation in New Yellow River Pumping Irrigation Area in the Ecotones between the Oases and Deserts: a Case Study of Yuanyi Village in Yongning County

作　　者：杨新国[1] 刘秉儒[1] 安慧[1] 宋乃平[1] 

机构地区：[1]宁夏大学西北退化生态系统恢复与重建教育部重点实验室,宁夏银川750021

出　　处：《生态经济》2011年第9期166-170,共5页Ecological Economy

基　　金：973前期项目(2009CB426304);农业部生态农业重点开放实验室开放课题(2009k15);宁夏大学自然科学基金(ZR200829)

摘　　要：为系统地比较贺兰山东麓荒漠-绿洲交错带扬黄新灌区不同土地利用方式对土地退化防治的作用机制,提炼区域土地退化防治的一般模式,采用社区调查和野外调查相结合的方法,综合分析了园艺村不同土地利用方式在限制性资源调集和分配、土壤理化性质改良等方面的作用。相对原生荒地对照,耕地(玉米/小麦套作)土壤养分和盐分发生表聚现象,园地(葡萄)40～60cm土层养分和盐分明显富集。菌草产业的资源调集能力巨大,菌菇废料有效养分含量高而均衡,但是全盐含量明显偏高。相对早期单一的粮食种植结构,葡萄和菌草产业的发展有力推动了园艺村土地退化防治实践。葡萄产业代表了一种原位的土地适宜性利用推动土地退化防治的模式,而菌草产业代表了一种拓展性土地集约利用引导土地退化防治的模式。To understand the mechanism and model for industry regulation to combat land degradation in new yellow river pumping irrigation area in eastern foot of Helan Mountain,we investigated the community and the soil of Yuanyi village,to analysis the different results of land use manners in limited resources allocation and soil improvement.Comparing with the wasteland,the croplands（wheat and maize interplant） occurred with obvious surface gathering of soil nutrients and salts,differently,the gathering in gardens（grape） occurred underground 40-60cm.The Jun-cao industry collected lots of nutrient resources out of the village,and produced lots of organic fertilizers with more and balanced effective nutrients,but with more salts.The development of grape and Jun-cao industries promoted the combating of land degradation in Yuanyi village,comparing with the forepart simple using structures of crop lands.The grape industry represented an in-situ fitted model of land use to combat land degradation,but an extended intensive model for the Jun-cao industry.

关 键 词：土地退化防治 荒漠-绿洲交错带 葡萄 菌草 

分 类 号：S151.9[农业科学—土壤学]