元谋干热河谷冲沟地形与植物多样性的关系探讨  

Discussion on the Relationship between Gully Terrain and Plant Diversity in Yuanmou Dry-hot Valley

作　　者：吴世祥 王晨[1,2] 杨丹[1,2] 胡翠华 刘守江[1,2] Wu Shixiang;Wang Chen;Yang Dan;Hu Cuihua;Liu Shoujiang(Land Resources College& Xiliua Normal University & Nanchong City of Sichuan Province, 637009;JialingRiver Watershed Research Institute, Xiliua Normal University, Nanchong City of Sichuan Province, 637009)

机构地区：[1]西华师范大学国土资源学院,四川南充637009 [2]西华师范大学嘉陵江流域研究所,四川南充637009

出　　处：《亚热带水土保持》2018年第1期1-5,14,共6页Subtropical Soil and Water Conservation

基　　金：四川省教育厅重点项目(17AZ0373);西华师范大学英才科研基金项目资助(17YC114)

摘　　要：对云南元谋干热河谷冲沟地区进行了3个样区的野外样方调查,共调查了48个样方的植物和地形因子的相关数据,并运用SPSS和Excel软件对地形因子(海拔、坡度、沟向)和植物多样性进行相关性分析。结论如下:(1)相较于坡度与沟向,海拔与灌木株数、种数以及草本种数均呈极显著相关(p<0.01),在总体趋势上灌木和草本的种数和株数均随着海拔的升高而呈现增加的趋势。(2)海拔与丰富度指数、香浓维纳指数、辛普森指数均呈极显著相关(p<0.01),相关系数分别为0.579、0.5和0.401,与Gleason指数显著相关(p<0.05),相关系数为0.333,植物多样性指数随海拔的升高而增加,海拔越高植物多样性越好,植物种类越丰富。这对于研究元谋干热河谷冲沟地区的地形与植被关系及生态恢复工作有一定的借鉴意义和参考价值。Field sample survey in three plots were conducted in the gully terrain of Yuanmou d r_hot valley of Yunnan Province.It was sureyed the related data of tiie plant and terrain factors of48samples.By using the SPSS and Excel software,it was conducted the correlation analysis betw^een the topographic factors(altitude,slope and gully direction)and the plant diversity.The results showed that:1)compared witii the slope and gully direction,the altitude has the extremely obvious correlation witii the plant numbers and species of tiie brush and the species of tiie grass(p<0.01).In general,the species and plant numbers of the brush and grass appear the increase trend following with the increase of the altitude;2)the altitude has the extremely obvious correlation with the richness index,fragrant Wiener index and Simpson index(p<0.01),with the correlation indexes of0.579,0.5and0.401,respectively.While the altitude has the obvious correlation witii the Gleason index(p<0.05),witii the correlation index of0.333.The plant diversity index appears the increase trend following witii the increase of the altitude.The higher altitude,the plants have more diversity and more abundant species.It has the reference meaning and value in the study of tiie correlation between the terrain and plant vegetation and the ecological restoration in the Yuanmou dry-hot gully area.

关 键 词：元谋干热河谷 地形因子 植物多样性 相关性 

分 类 号：Q948.114[生物学—植物学]