干旱区生态环境知识资源中心(Arid): 黄土高原4种植被带草本群落特征及其对降水变化的响应

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	黄土高原4种植被带草本群落特征及其对降水变化的响应
其他题名	Herbaceous Community Characteristics of Four Vegetation Belts and Their Responses to Precipitation Changes in the Loess Plateau
	姜基春 1; 王国强 1; 郭宁 2; 焦峰 3
来源期刊	西北植物学报
ISSN	1000-4025
出版年	2019
卷号	39 期号:10 页码:1861-1867
中文摘要	以黄土高原草本群落为研究对象,选取陕西省榆林市榆阳区至延安市富县的4种植被带,测定草本群落物种多样性和生物量,结合研究区近20年的气象数据资料,分析4种植被带草本群落物种多样性和生物量的分布特征以及它们对降水变化的响应规律,以期为黄土高原植被恢复和水土保持生态建设提供参考。结果表明:(1)4种植被带草本群落Margalef指数、Pielou指数以及Shannon-Wiener指数均为草原-荒漠带数值最小,森林带数值最大,且都随着年均降水量的增加呈先增大后减小的变化趋势,最大值都出现在森林-草原带。(2)地上、地下和总生物量的大小顺序均为草原-荒漠带<森林带<草原带<森林-草原带,它们随着年均降水量的增加呈单峰曲线的变化趋势,曲线的拐点都出现在森林-草原带;地下/地上生物量与年均降水量之间存在显著正相关关系。
英文摘要	In this paper,herbaceous communities in the Loess Plateau were taken as research object,four vegetation belts from Yuyang, Yulin,Shaanxi to Fuxian,Yan'an, Shaanxi were selected to measure species diversity and biomass of herbaceous communities,combined with the meteorological data of the last 20 years in the study area. The distribution characteristics of species diversity and biomass of herbaceous communities in the four vegetation belts and their response rules to precipitation changes were analyzed, so as to provide references for vegetation restoration and ecological construction of soil and water conservation in the Loess Plateau. The results showed that: (1) Margalef index, Pielou index and Shannon-Wiener index of herbaceous communities in the four vegetation belts were the smallest values in the grass-desert belt and the largest values in the forest belt. The values increased first and then decreased with the increase of annual average precipitation, and the maximum values all appeared in the forest-grass belt. (2) The order of aboveground, underground and total biomass is grass-desert belt< forest belt< grass belt< forestgrass belt. With the increase of annual average precipitation, they showed a trend of "single peak curve", and the inflection points of the curves all appeared in forest-grass belt. There is a significantly positive correlation between underground/aboveground biomass and annual average precipitation.
中文关键词	草本群落 ; 物种多样性 ; 生物量 ; 降水变化
英文关键词	herbaceous community species diversity biomass precipitation changes
语种	中文
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6611772
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315977
作者单位	1.西北农林科技大学水土保持研究所, 杨陵, 陕西 712100, 中国; 2.中国科学院水利部水土保持研究所;;中国科学院大学, ;;, 杨陵;;, 陕西;;北京 712100;;100049, 中国; 3.西北农林科技大学水土保持研究所;;中国科学院水利部水土保持研究所, ;;, 杨陵;;杨陵, 陕西;;陕西 712100;;712100, 中国
推荐引用方式 GB/T 7714	姜基春,王国强,郭宁,等. 黄土高原4种植被带草本群落特征及其对降水变化的响应[J]. 西北农林科技大学,2019,39(10):1861-1867.
APA	姜基春,王国强,郭宁,&焦峰.(2019).黄土高原4种植被带草本群落特征及其对降水变化的响应.西北植物学报,39(10),1861-1867.
MLA	姜基春,et al."黄土高原4种植被带草本群落特征及其对降水变化的响应".西北植物学报 39.10(2019):1861-1867.