摘要
运用景观生态学与生物多样性方法,对河南境内黄淮海平原10县(市、区)的农林复合生态系统及其相关生态系统的类型、结构进行了调查分析.结果表明,共调查到9个系统类型、19个亚系统类型、39个生态系统类型;由其所构成的景观格局中,林农系统的平均斑块面积最大,为景观基质,与廊道系统等共同构成了效益良好的农田防护林,为该地区农业的高产、稳产提供坚实保障;景观多样性指数1.053 5,均匀度指数0.479 5,但各斑块的破碎度指数均较大,平均斑块分维数较小.典型群落结构的多样性主要受其中草本层的影响;研究结果也表明了河南省黄淮海平原的农田防护林建设具有良好成效.
The agroforestry and its relative ecosystem type and structure was investigated and analyzed in 10 counties （cities or districts） in the Huang-Huai-Hai Plain in Henan province, using the land- scape and biodiversity method. The result show that there are 9 system, 19 sub-system and 36 ecosystem types, respectively. At the landscape level, the agroforestry ecosystem has maximum mean patch size, as the landscape matrix composing a benefit shelter forest for farmland with the corridor system, which could give a solid guarantee for high and stable farm production in this region. The index of landscape diversity and evenness is 1. 053 5 and 0. 479 5 respectively, but the patch fractal number is higher and the mean patch fractal dimension is lower. The species diversity of typical community is affected deeply by the herb layer. The result demonstrates that in the Huang-Huai-Hai Plain in Henan Province, the shelter forest construction for farmland has produced better effect.
出处
《河南农业大学学报》
CAS
CSCD
北大核心
2014年第1期40-45,共6页
Journal of Henan Agricultural University
基金
国家林业局林业公益性行业科研专项(201104068)
(201104049)
关键词
农林业
生态系统
多样性
黄淮海平原
河南
agroforestry
ecosystem
diversity
Huang-Huai-Hai Plain
Henan
