欢迎来到天天文库
浏览记录
ID:5391762
大小:559.45 KB
页数:9页
时间:2017-12-08
《准格尔旗黄土丘陵区人工林水文生态效益评价研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、万方数据第35卷第4期2009年12月内蒙古林业科技JournalofInnerMongoliaForestryScience&TechnologyV01.35No.4De(·.2009准格尔旗黄土丘陵区人工林水文生态效益评价研究刘永宏1,成邦1,武建萍2(1.内蒙古自治区林业科学研究院,内蒙古呼和浩特010010;2.内蒙古水利水电勘测设计院,内蒙古呼和浩特010020)摘要:就黄土丘陵区主要植被类型人工油松成熟林、人工油松中龄林、人工油松幼龄林、人工沙棘林、人T.柠条林、天然草坡的枯落物容水特征和林地土壤水分物理性质进行了测定,并以坡耕地作对照。结果表明:人
2、工油松成熟林的枯落物吸水量为22.6t/hm2,是中龄林和幼龄林的5—9倍,是灌木林的2.4~3倍,是天然草地的lO倍多。0—40cm土层土壤最大持水能力油松成林、油松幼林、油松中龄林、人工沙棘林、人T柠条林、天然草地、农耕地依次为2260.05、l935.6、1820.1、1597.65、1666.05、1600.2t/hm2;油松成林、油松幼林、油松中龄林、人工沙棘林、天然草地0~40cln土层土壤最大持水能力分别比对照农耕地提高659.85、335.4、335.4、219.9、65.85t/hm2。在土壤总孑L隙度、毛管孔隙度、毛管最大持水量、土壤最大持水
3、能力等水土保持及水源涵养功能指标诸方面,人_T.油松林均优于灌木林和天然草地。关键词:黄土丘陵区;人t林;枯落物;孔隙度;毛管最大持水量;水文生态效益中图分类号:S715文献标识码:A文章编号:1007—4066(2009)04—29—06EvaluationonHydrological——ecologicalEffectsofPlantationinLoessHillyAreainZhungeer,InnerMongoliaLIUYong—hon91,CHENGBan91,WUJian—pin92(1.InnerMongoliaAcademyofForestr
4、yScience,Hohhot010010,China;2.InnerMongoliaDesignInstituteofWaterConservancyandHydroelectricPower,Hohhot010020,China)Abstract:Thispaperstudiedhydrologicalcharacteristicsoflitterandsoilwaterphysicalpropertiesinmature,youngandmiddle—agedforestofPinustabulaeformisandHippophaerhamnoidess
5、tands,Caraganakorshiskiistandsaswellasnaturalgrasslandinloesshillyarea,withtakingslopefarmlandasck.TheresultsshowedthatthemaximumwaterabsorptionoflitterinmatureforestofPinustabulaeformiswas22.6t/hm2,whichwas5~9timesasmuchasyoungandmiddle—agedforest,2.4~3timesasmuchasshrubbery,andmore
6、than10timesasmuchasnaturalgrassland.Themaximumwater—holdingcapacitybetween0—40amsoillayerinmature.youngandmiddle—agedforestofPinustabulaeformis,Hippophaerhamnoidesplantation,Caraganakorshiskiiplantation,naturalgrasslandandcultivatedlandwasrespectively2260.05,1935.6,1820.1,1597.65,166
7、6.05,l600.2t/hm2;themaximumwater—holdingcapacitybetween0-40cmsoillayerinmature,youngandmiddle—agedforestofPinustabulaeformis,Hippophaerhamnoidesplantationandnaturalgrasslandwasrespectively659.85,335.4,35.4,219.9,65.85t/hm2higherthanthatofcultivatedland.Thus,someindexesofwaterconserva
8、tionfunction
此文档下载收益归作者所有