摘要
采用野外调查与长期定位监测相结合的方法,以平江县3种不同造林模式(针叶树种+一般阔叶树种混交林模式M1、针叶树种+珍贵阔叶树种混交林模式M2与珍贵树种模式M3)为研究对象,对3种不同模式森林涵养水源功能进行整体系统的研究,结果表明:(1)监测期间,各林分之间灌草层持水量差异不明显,灌草层持水量最大的模式是M3,灌草层持水量达3.514 mm,最小的是M1,灌草层持水量3.43 mm,两者相差0.084 mm。(2)造林模式各林分枯落物层持水量差异显著,由大到小排序M3(14 mm)>M2(8.4 mm)>M1(6.65 mm)。枯落物持水量最大的造林模式是M3,枯落物层持水量达14 mm,最小的是M1,枯落物持水量6.65mm。(3)造林模式林地的贮水能力M3与M1、M2之间差异显著,M1与M2之间差异不大。造林模式林地与对照CK1之间,除了M3差异较大之外,其它差异不大,其大小排序为:珍贵阔叶M3(20.740 mm)>针叶+珍贵阔叶M2(17.280 mm)>针叶+一般阔叶M1(16.170 mm)。(4)各林分水源涵养总能力大小为M3(992.042mm)>M2(821.091 mm)>M1(792.621 mm)>CK1(668.990 mm)。M3树种组成丰富、林下灌草盖度相对较高、枯落物储量多,水源涵养能力最高,达到992.042 mm,约占年降雨量的75%。各造林模式采取全垦整地造林方式,地被物显著减少,裸露地明显增加,破坏了灌草层和枯落物层结构和功能,严重降低了灌草层、枯落物层的水源涵养能力,水源涵养总能力均不高,M1水源涵养能力最差,仅为792.621 mm,造林各模式水源涵养能力强于对照。本研究旨在定量分析不同造林模式水源涵养功能大小,为不同造林模式可持续发展提供数据支撑。
Using a combination of field surveys and long-term monitoring methods, by taking three different afforestation modes （M1 ：coniferous species＋ precious broad-leaved species mixed forest mode, M2：precious broad-leaved species mixed forest mode, M3：coniferous species＋ general broad-leaf species mixed forest mode）in Pingjiang county as the research object with different modes water conservation function of forest system as a whole. （1）In the monitoring period,the research results showed that there is little difference among forest stands in shrub-grass layer water holding capacity of in the afforestation mode.he afforestation mode M3 has the maximum shrub-grass layer water holding capacity of 3.514 mm, while MI is the minimum of 3.43 mm, between which there is a difference of 0.084 mm. （2）The litter water-holding capacities of forest stands in the afforestation mode are significantly different, M3 has the maximum litter water-holding capacity in the afforestation mode of 14 mm, while the minimum is M1 of 6.65 mm. （3）There is a significant difference in the water storage capacity between M3 and M1 and between M3 and M2 in the afforestation mode, while the difference between M1 and M2 is not so significant. For the woodland in the afforestation mode and the reference CK1, except that M3 is quite different, the others are insignificantly different, and its descending order is as follows： precious broadleaf M3 （20.740 mm） 〉 coniferous ＋ precious broadleaf M2 （17.280 mm） 〉 coniferous ＋ general broadleaf M1 （16.170 mm）.（4）The descending order of the total stand water conservation capacity in the afforestation mode was as follows： M3 （992.042 mm） 〉 M2 （821.091 mm） 〉 M1 （792.621 mm） 〉 CK1 （668.990 ram）. And water conservation capacity of M3 is relatively high up to 992.042 mm accounting for about 75% of the annual rainfall, which was mainly due to its abundant composition, relatively high understory shrub, herb cover, and litter reserves. water conse
出处
《中南林业科技大学学报》
CAS
CSCD
北大核心
2017年第3期79-85,共7页
Journal of Central South University of Forestry & Technology
基金
国家国际科技合作专项资助(2015DFA90450)
世界银行贷款湖南森林恢复与发展项目(JC-4)
湖南近自然森林经营试验与示范(2012-HNLYKY-01)
湖南省林业科学院青年科研创新基金项目(2013LQJ11)
"十二五"农村领域国家科技支撑计划课题(2015BAD07B04)
"十二五"环境领域国家科技支撑计划课题(2014BAC09B00)
关键词
水源涵养
功能
造林模式
平江县
water conservation
function
afforestation mode
Pingjiang county
