山西省土石山区典型防护林土壤抗蚀性研究  

Soil Anti-erosion Ability in Typical Shelterbelt in Mountainous and Stony Area of Shanxi Province

作　　者：张东旭[1,2] 程金花[1,2] 张友焱[3] 张洪江[1,2] 周泽福[3] 孙艳红 王月东 刘宇[1,2] 

机构地区：[1]水土保持与荒漠化防治教育部重点试验室,北京100083 [2]北京林业大学水土保持学院,北京100083 [3]中国林业科学研究院荒漠化研究所,北京100091 [4]延庆县水土保持工作站,北京102200 [5]山西省吕梁山国有林管理局车鸣峪林场,山西中阳033403

出　　处：《水土保持通报》2013年第6期24-27,31,共5页Bulletin of Soil and Water Conservation

基　　金："十二五"农村领域国家科技计划项目"晋西黄土丘陵沟壑区节水防蚀水土保持林研究与示范"(2011BAD38B0602;2011BAD31B02);中央高校基本科研业务费专项资金项目(TD2011-2);国家自然科学基金项目(41271300;30900866)

摘　　要：选择山西省中阳县车鸣峪林场4种典型防护林为研究对象，通过静水崩解试验测定土壤抗蚀指数并对其与土壤基本理化性质的关系进行了研究。结果表明，不同防护林土壤抗蚀性能存在明显差异，土壤抗蚀指数表现为：落叶松白桦混交林〉白桦纯林〉落叶松纯林〉辽东栎纯林。土壤抗蚀指数随土层深度的增加而减小，表现为0-20cm土层抗蚀指数是20-40cm土层的2～5倍。土壤抗蚀指数随浸水时间的增加而减小，呈三次多项式函数关系。土壤抗蚀性指数与容重、粒径〉0．25mm土壤水稳性团聚体、有机质含量和全氮含量呈显著正相关关系，与其基本理化性质存在一定的线性关系。Taking 4 typical shelterbelts in Chemingyu Forestry Station, Zhongyang County, Shanxi Province as studying subjects, the article discussed the relationship between soil anti-erosion ability and soil physical and chemical characteristics through measuring the soil anti-erosion index by the experiments of static soil collapse. The results indicated that： the soil anti-erosion ability varied apparently with the types of shelter- belt, among which the order of soil anti-erosion indices is as follows： combines foresty of Larix spp. and Betula platyphylla Suk. 〉Betula platyphylla Suk. 〉Larix spp〉Quercus liaotungensis Koidz. ; Anti-ero- sion ability decreases with the increase of soil depth and time of water soaking. Soil anti-erosion indices in up- per 20 centimeters are 2-5 times as these under 20 centimeters and present a cubic polynomial relation with time of soaking. The amount of soil bulk density, water-stable aggregate（〉0.25 ram）, organic matter and total nitrogen is of significantly relations with anti erosion-index and some kind of lineal relation with its physical and chemical characteristics.

关 键 词：土石山区 防护林 土壤抗蚀性 山西省 

分 类 号：S157.1[农业科学—土壤学]