| 摘要: |
| 文章以甘肃省森林资源连续清查和统计数据为数据基础，采用统计分析的方法，对 40 年来
甘肃省森林资源动态变化进行了分析研究，结果表明：从 1975 年到 2016 年，全省林地面积由 630.87
万 hm2 增加到 1 046.35 万 hm2
，增长 65.9%；有林地面积由 186.83 万 hm2 增加到 263.89 万 hm2
，增长
41.2%；森林面积（含国家特别规定灌木林）由 2006 年的 470.67 万 hm2 增加到 2016 年的 509.73 万 hm2，
增长 8.3%；森林活立木蓄积量由 1.96 亿 m3 增长到 2.84 亿 m3
，增长 45.1%。森林面积蓄积“双增”幅
度较大。全省乔木林每公顷蓄积量由 1975 年的 99.31m3
/ hm2 微降到 2016 年的 95.45 m3
/hm2
，下降 4.1%，
森林质量较低。同时乔木林树种、林龄结构不够合理。采用回归分析预估，到 2035 年和 2050 年，森林
面积分别达到 639.15 万 hm2 和 742.68 万 hm2
，森林覆盖率达到 14.21% 和 16.52%，乔木林蓄积量达到 3.2
亿 m3 和 4.1 亿 m3
，活立木蓄积量达到 3.6 亿 m3 和 4.5 亿 m3。 |
| 关键词: 甘肃省 森林资源 动态变化 预估分析 |
| DOI： |
| 分类号: |
| 基金项目:2017年甘肃省林业厅科研项目 |
|
| Analysis on Status and Dynamic Change of Forest Resources in Gansu Province |
|
zhanglongsheng, chengxiaoyun, liping, zhangxuhua, caorong, cheqilong, zhaofangyuan
|
|
Gansu Provincial Forestry Investigation and Planning Institute
|
| Abstract: |
| The research based on the continuous inventory and statistical data of forest resources in Gansu
Province, analyzed the dynamic changes of forest resources of the past 40 years with the statistical analysis
method. The result showed that: from 1975 to 2016, the forestry area of Cansu province increased from 6.31
million hm2 to 10.46 million hm2
, an increase of 65.9%. Arboreal lands increased from 1.87 million hm2
to 2.64
million hm2
, an increase of 41.2%. Forest standing volume increased from 196 million m3
to 284 million m3
, an
increase of 45.1%. Forests area (including shrubs specified by the state) increased from 4.71 million hm2 in 2006
to 5.10 million hm2
in 2016, an increase of 8.3%. Both forest area and volume increased greatly. The volume of
arbor forest per hectare showed a slight downward trend, which decreased from 99.31 m3
/hm2
in the 1970s to
95.45 m3
/hm2 in 2016, a decrease of 4.1%. The forest quality is lower. Both of the arbor species and age structure
are unreasonable. Using regression analysis, it is predicted that by 2035 and 2050, the forest area will reach 6.39
million hm2
and 7.43 million hm2 respectively, the forest coverage will reach 14.21% and 16.52%, the stock of
arbor forest will reach 320 million m3
and 410 million m3
, and the standing forest stock will reached 360 million m3
and 450 million m3. |
| Key words: Gansu province forest resources continuous inventory dynamic change |
