| 毕艳玲,宋劲忻,王 勇,陶 晶,温庆忠.云南省原始森林资源状况及分布格局[J].林业调查规划,2026,51(2):44-51 |
| 云南省原始森林资源状况及分布格局 |
| Status and Distribution Pattern of Primary Forest Resources in Yunnan Province |
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| DOI： |
| 中文关键词: 原始森林 自然属性 人为干扰 资源分布 生态系统保护 云南省 |
| 英文关键词: primary forest natural attribute human disturbance resource distribution ecosystem conservation Yunnan Province |
| 基金项目:国家自然科学基金面上项目(32471737);云南省重点研发计划社会发展专项(302403AC100035). |
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| 中文摘要: |
| 原始森林是原真生态系统的典型代表,其保护受到高度关注,系统摸清云南省原始森林的资源状况与分布格局,是实现科学有效保护的基础性工作。基于多源数据与实地调查,构建适用于大尺度区域的原始森林判别指标体系和模型,建立云南省原始森林数据库,对原始森林的资源现状与空间分布特征进行系统分析。结果表明,云南省原始森林总面积为2 477 790.1 hm2,约占全省土地面积的6.47%,集中分布于滇西北、滇西及南部边缘地区,其中迪庆、怒江和西双版纳3个州面积占比达78.47%。原始森林以乔木林为主(占86.83%),平均郁闭度为0.64,平均树高为16.7 m,平均胸径为28.3 cm,单位面积蓄积量达225.3 m3/hm2,分别为全省及全国平均水平的2.17倍和2.37倍。原始森林受人为干扰程度较低, 距公路、居民点、耕地与园地的平均距离分别为7.3、5.2、2.9 km。项目构建的原始森林判别指标体系和模型,经验证适用性强、精度高,可为其他省域或生态区的原始森林识别与调查提供方法借鉴。 |
| 英文摘要: |
| Primary forests are typical examples of authentic ecosystems, and their protection has attracted significant attention. Conducting a systematic survey of the resource status and distribution patterns of primary forests in Yunnan Province is a fundamental task for achieving scientific and effective protection. Based on multi-source data and field surveys, this study developed a discriminant indicator system and model suitable for large-scale regions to identify primary forests, established a comprehensive database of primary forests in Yunnan Province, and systematically analyzed their current status and spatial distribution characteristics. The results showed that the total area of primary forests in Yunnan Province was 2 477 790.1 hm2,accounting for approximately 6.47% of the province′s total forest area. These forests were concentrated in northwestern Yunnan, western Yunnan, and the southern border regions, with the three prefectures of Deqen, Nujiang, and Xishuangbanna together accounting for 78.47% of the total area. Primary forests were primarily composed of arbor forests (86.83%), with an average canopy density of 0.64, an average tree height of 16.7 m, an average diameter at breast height (DBH) of 28.3 cm, and a standing stock volume per unit area of 225.3 m3/hm2, which were 2.17 and 2.37 times the average levels of Yunnan Province and the whole nation, respectively. Primary forests experienced relatively low levels of human disturbance, with average distances to roads, settlements, and cultivated land/gardens of 7.3, 5.2 and 2.9 km, respectively. The indicator system and model for identifying primary forests developed in this project have been verified to offer strong applicability and high accuracy, providing methodological references for the identification and survey of primary forests in other provinces or ecological regions. |
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