文献类型：期刊文献

中文题名：京西油松生态公益林空间结构评价

英文题名：Evaluation of the stand spatial structure of Pinus tabuliformis ecological forest in West Beijing

作者：张连金[1] 赖光辉[2] 封焕英[1] 杜满义[1] 高旭[1] 郭嘉[1] 赵明伟[1] 余海[1] 马庆华[1]

第一作者：张连金

机构：[1]中国林业科学研究院华北林业实验中心;[2]北京市林业勘察设计院

年份：2018

卷号：37

期号：5

起止页码：1316-1325

中文期刊名：生态学杂志

外文期刊名：Chinese Journal of Ecology

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2017_2018】；

基金：中国林业科学研究院基本科研业务专项项目(CAFYBB2014QA035);国家重点研究计划项目(2016YFD0600203)资助

语种：中文

中文关键词：油松;生态公益林;空间结构;经营迫切性;评价

外文关键词：Pinus tabuliformis;ecological forest;spatial structure;management urgency;evaluation.

分类号：S153

摘要：分析油松生态公益林空间结构并进行经营迫切性评价,为油松生态公益林空间结构的优化调整奠定理论基础。基于北京九龙山油松生态公益林的实测数据,选取混交度、大小比数、角尺度、密集度、林层指数、开敞度和竞争指数7个空间结构参数分析油松生态公益林的空间结构特征,并从密度、格局、竞争和混交等方面选取10个指标构建了经营迫切性评价指标体系并确定评价标准,进而对油松林进行了经营迫切性评价。结果表明:(1)油松纯林和油松混交林都接近随机分布,但油松纯林空间结构较为简单,树种组成单一,以零度和弱度混交为主,呈现单种聚集趋势;(2)林木大小分化不明显,主要树种油松与华北落叶松的优势度较大;(3)林木之间较为密集,处于密集的林木比例较高;(4)绝大部分林木都分布在中林层与上林层,林层结构不太明显;(5)两种林分处于中度竞争状态,与油松纯林相比,油松混交林的开敞度较小,生长空间较为不足;(6)油松纯林与混交林的经营迫切性指数分别为0.6与0.5,经营迫切性等级为特别迫切和十分迫切,说明油松生态公益林多数状态特征不符合标准,急需通过采取有效的经营措施优化林分配置,改善森林状况,以实现油松生态公益林可持续发展。
The main aim of this study is to provide a theoretical basis for the optimization and adjustment of the spatial structure of mixed and pure Pinus tabuliformis ecological forest in Beijing Jiulong Mountain by analyzing the spatial structure of P. tabuliformis ecological forest and evaluating its management urgency. Based on empirical data,the spatial structure characteristics of P.tabuliformis ecological forests were analyzed using seven spatial structure parameters including mingling,dominance,uniform angle index,crowding,stand layer index,open degree,and competition index. Ten indices were selected to construct the evaluation index system of management urgency from four aspects of density,pattern,competition and mingling,and their standards were determined. Meanwhile,the management urgency of P. tabuliformis ecological forest was evaluated. Results showed that：（ 1） Trees in both mixed forest and pure forest were close to random distribution. Compared with the mixed forest,the spatial structure of pure forest was relatively simple,tree species composition was simple,dominated by non-mixture and low-mixture and with a trend of single aggregation.（ 2） Tree size differentiation was insignificant,and P. tabuliformis and Larix principis-rupprechtii were dominant species.（ 3） Trees were in a state of dense,and trees of the very dense had a higher proportion.（ 4） Most trees were in the middle and upper forest layers,with no obvious forest layer structure.（ 5） Both stands were under moderate competition. Compared with the pure forest,the open degree of the mixed forest was lower and its growth space was not enough.（ 6） Management urgency of the pure and mixed forest was 0.6 and0. 5,respectively. The grades of management urgency for those two stands were particularly urgent and very urgent,which illustrated that most of the characteristics of P. tabuliformis ecological forest did not meet the standards. It is necessary to adopt reasonable management strategies to optimize the spatial structure of the P. tabuliformis ecological forests,with the aim to improve forest status and achieve sustainable development.