剑阁县撂荒地草资源及可燃物载量调查与分析  

Investigation and Analysis on Grassland Resources and Fuel Load of Abandoned Land in Jiange County

作　　者：刘敏 杨兴 杨怀林 刘国良 孙宇 郑东升 LIU Min;YANG Xing;YANG Huailin;LIU Guoliang;SUN Yu;ZHENG Dongsheng(Sichuan Forestry and Grassland Inventory and Planning Institute,Chengdu610081,China)

机构地区：[1]四川省林业和草原调查规划院,成都610081

出　　处：《中国草食动物科学》2023年第3期37-41,共5页China Herbivore Science

基　　金：四川省自然科学基金(2023NSFSC0204)。

摘　　要：为摸清剑阁县撂荒地草资源和可燃物载量的基本情况,于2018年6—8月开展撂荒地样方调查,分析撂荒地的草地类型、可食牧草产量、可燃物载量,并研究了不同撂荒年限的可食牧草产量和可燃物载量的变化规律。结果表明:①剑阁县撂荒地的草地类型包括热性灌草丛类的具乔灌的五节芒草地型和具灌木的白茅草地型;②具乔灌的五节芒草地型的可食用牧草产量、鲜草产量、可燃物载量、枯落物量均显著高于具灌木的白茅草地型(P<0.05);③撂荒3年和撂荒5年的土地可食牧草产量、鲜草产量和可燃物载量均显著高于撂荒7年和撂荒8年的土地(P<0.05);④撂荒地的可食牧草产量和可燃物载量与撂荒年限呈极显著负相关(P<0.01)。剑阁县撂荒地的草地类型单一,不同草地型的草地资源存在显著差异,撂荒地的可食牧草产量和可燃物载量会随着撂荒年限的增加而逐渐降低。In order to find out the basic situation of grass resources and fuel load of abandoned land in Jiange county,a sample survey of abandoned land was carried out in June to August 2018 to analyze the grassland type,edible forage yield and fuel load of abandoned land,and to study the change rule of edible forage yield and fuel load of different abandoned years.The results showed as follows:①the grassland types of the abandoned land in Jiange county included two grassland types,namely,the hot shrub type of ficus chinensis with arbor and shrub and the white fescue with shrub;②the edible forage yield,fresh grass yield,fuel load and litter of the ficus chinensis grassland type with arbor and shrub were significantly higher than those of the fescue grassland type with shrub(P<0.05);③the yield of edible forage,fresh grass and fuel load of land abandoned for 3 years and 5 years were significantly higher than those of land abandoned for 7 years and 8 years(P<0.05);④the yield of edible forage and fuel load of abandoned land were significantly negatively correlated with the number of abandoned years(P<0.01).The grassland type of abandoned land in Jiange county was single,and the grassland resources of different grassland types were significantly different.The edible forage yield and fuel load of abandoned land gradually decreased with the increase of abandoned years.

关 键 词：撂荒地 可食牧草 可燃物载量 

分 类 号：S54[农业科学—作物学]