半干旱农牧交错带栗钙土的发生与演变  

GENESIS AND EVOLUTION OF CHESTNUT SOILS IN THE ALTERNATIVE BELT OF SEMIARID AGRICULTURE AND ANIMAL HUSBANDRY

作　　者：刘良梧[1] 周健民[1] 刘多森[1] ИBaHOB И B ДeMКИH B A ПPиXOДbKO B E 

机构地区：[1]中国科学院土壤研究所 [2]ИHCTИTyT Почевовдения и Фотосинтеза P A H,Пушино,MockoBa,14229 Pyccия

出　　处：《土壤学报》2000年第2期174-181,共8页Acta Pedologica Sinica

基　　金：国家自然科学基金!49671037;国际合作交流重点资助!49720120465

摘　　要：半干旱农牧交错带玄武岩和沙质沉积物上发育的典型草原土壤──粟钙土形成于距今6000～8000年以前。随着时间的进程，它经历了有机质积累与分解，碳酸盐淀积与淋溶，元素氧化物迁移与富集，以及风沙堆积等作用。近二百余年来，栗钙土在人为强度活动，开垦种植和过度放牧经营管理下，土壤理化性质渐趋恶化，从而反映出演变过程中的土壤退化现象。Chestnut soils formed at 6000~8000 years ago are a typical steppe soils in thealtemative belt of sendarid agriculture and edmal husbandry. The chesinut soils onbasalt and sandy sediment have undergone accumulation and decomposition of organicmater, illuviation and leaching of carbonare, migration and enrichment of elementaloxides, as well as deposition of aeolian sand with time.Uder the influence of humanachvihes, such as reclamation and planting crops, overgrazing, the physical andchemical properties of the soils have been getung deterioration and soil degradaonoccurred in the course of soil evolution since the last more than two hundred years.

关 键 词：栗钙土 农牧交错带 土壤发生 土壤演变 

分 类 号：S155.28[农业科学—土壤学] S151[农业科学—农业基础科学]