摘要
根据2006—2014年民勤荒漠植物4个样区36个样方调查数据,对该区沙蒿、梭梭、麻黄和白刺4种典型荒漠植物群落结构及物种多样性进行分析。结果表明:该区群落结构简单,物种相对单一且数量较少,植物都是以较低的芽位适应生境条件;灌木层物种的变化不大,草本层物种有所增加;多样性指数沙蒿群落、梭梭群落和白刺群落的略有增加,而麻黄群落略有减小;该区群落结构和物种多样性的变化主要由于草本层的物种变化引起。了解和掌握民勤荒漠植物群落的结构和物种多样性变化规律,对于推动干旱荒漠区植被恢复和物种多样性的保护提供依据。
According to the survey data of 4 sample plots in 36 sample areas of Minqin from 2006 to 2014, thecommunity structure and species diversity of Artemisia desertorum, Chenopodiaceae, Ephedra przewalskii Stapfand Nitraria tangutorum Bobr were analyzed. The results showed that the community structure in the studyarea was simple, and the species was homogeneous and the species number was small, the plants were low budnodes to adapt to the habitat conditions; little variation was found in shrub layer species, but the speciesincreased in herb layer; the diversity index of Artemisia desertorum community, Chenopodiaceae communityand Nitraria tangutorum Bobr community increased slightly, and that of Ephedra przewalskii Stapf communitydecreased; the changes of community structure and species diversity in this area were mainly due to the changeof species in the herb layer. Understanding and mastering the change rules of structure and species diversity ofdesert plant communities in Minqin could provide references for promoting arid desert vegetation restorationand conservation of species diversity.
作者
周兰萍
王立
詹科杰
魏怀东
陈芳
李亚
胡小柯
张晓娟
肖斌
Zhou Lanping Wang Li Zhan Kejie Wei Huaidong Chen Fang Li Ya Hu Xiaoke Zhang Xiaojuan Xiao Bin(Forestry College of Gansu Agricultural University, Lanzhou 730070 State Key Laboratory of Desertification and Aeolian Sand Disaster Combating/Gansu Key Lab of Desertification Combating/ Gansu Minqin National Station of Desertification Pasture Ecology System Research/ Gansu Desert Control Research Institute, Lanzhou 730070)
出处
《中国农学通报》
2017年第6期116-122,共7页
Chinese Agricultural Science Bulletin
基金
甘肃省青年科技基金计划"石羊河流域综合治理工程生态效益监测评估"(145RJYA262)
国家自然科学基金"民勤荒漠绿洲过渡带白刺灌丛沙堆表面风沙流特征与沙堆形成演变的关系研究"(41361001)
"甘肃民勤沙尘暴源区沙尘输运规律与理化特征及下垫面对其影响的实验观测研究"(31560235)
"河西走廊典型荒漠植物抗旱结构及其光谱特征研究"(3136204)
"荒漠绿洲过渡带白刺沙堆地表结皮生态水文效应研究"(41361004)
"河西绿洲灌区保护性耕作的防风蚀效应"(41361059)
甘肃省杰出青年基金项目"石羊河下游近地面0~50 m沙尘理化特征及其对区域地表景观异质性的响应"(145RJDA327)
关键词
民勤
荒漠植物
群落结构
物种多样性
Minqin
desert plants
community structure
species diversity