| 7-22 环境保护基本情况 | ||||||||||
| Basic Conditions of Environmental Protection | ||||||||||
| 项 目 | item | 2010 | 2015 | 2021 | 2022 | 2023 | ||||
| 水环境 | Water Environment | |||||||||
| 优良水体比例 | (%) | Proportion of Excellent Water | (%) | |||||||
| 地表水国考断面 | National Examination Section of Surface water | 77.5 | 90.5 | 92.6 | 92.6 | |||||
| 地表水省考断面 | Provincial Section of Surface Water | 76.2 | 87.5 | 92.2 | 91.8 | |||||
| 劣V类水体比例 | (%) | Proportion of Inferior Class V water | (%) | |||||||
| 地表水国考断面 | National Examination Section of Surface water | 8.5 | 1.4 | 0.0 | 0.0 | |||||
| 地表水省考断面 | Provincial Section of Surface Water | 9.8 | 1.2 | 0.0 | 0.0 | |||||
| 大气环境 | Atmospheric Environment | |||||||||
| 二氧化硫浓度 | (微克/立方米) | Sulfur Dioxide Concentration | (microgram / cubic meter) | 12 | 8 | 8 | 7 | |||
| 二氧化氮浓度 | (微克/立方米) | Nitrogen Dioxide Concentration | (microgram / cubic meter) | 24 | 22 | 19 | 19 | |||
| 颗粒物PM10浓度 | (微克/立方米) | Respirable Suspended Particulates Concentration | (microgram / cubic meter) | 47 | 40 | 34 | 37 | |||
| 颗粒物PM2.5浓度 | (微克/立方米) | Fine Suspended Particulates Concentration | (microgram / cubic meter) | 31 | 22 | 20 | 21 | |||
| 一氧化碳浓度 | (毫克/立方米) | Carbon Monoxide Concentration | (milligram / cubic meter) | 1.3 | 0.9 | 0.9 | 0.8 | |||
| 臭氧浓度 | (微克/立方米) | Ozone Concentration | (microgram / cubic meter) | 126 | 144 | 157 | 143 | |||
| 空气质量达二级标准城市数 | (个) | Number of Cities Meeting Grade Ⅱ Air Quality Standard | (unit) | 21 | 16 | 18 | 14 | 17 | ||
| 生态环境 | Ecological Environment | |||||||||
| 人均耕地面积 | (亩) | Per Capita Area of Cultivated Land | (mu) | 0.37 | 0.36 | 0.23 | 0.22 | 0.23 | ||
| 新增水土流失治理面积 | (千公顷) | Area of Soil Erosion under Control | (1000 hectares) | 44.56 | 72.61 | 80.83 | 86.85 | 80.88 | ||
| 森林面积 | (万公顷) | Forest Area | (10000 hectares) | 1036.28 | 1086.11 | 1054.70 | ||||
| 森林覆盖率 | (%) | Forest Coverage Rate | (%) | 57.00 | 58.88 | 58.74 | ||||
| 人均森林面积 | (公顷) | Per Capita Forest Area | (hectare) | 0.1 | 0.1 | 0.1 | ||||
| 活立木蓄积量 | (万立方米) | Volume of Standing Forest Stock | (10000 cu.m) | 43936 | 56636 | 62824 | ||||
| 森林蓄积量 | (万立方米) | Stock Volume of Forest | (10000 cu.m) | 43190 | 56128 | 62370 | ||||
| 当年造林面积 | (万公顷) | Afforested Area in Current Year | (10000 hectares) | 30.77 | 107.34 | 17.56 | 17.72 | 11.99 | ||
| 自然保护区数 | (个) | Number of Natural Reserves | (unit) | 357 | 377 | 377 | 377 | 377 | ||
| 自然保护区面积 | (万公顷) | Area of Natural Reserves | (10000 hectares) | 164.44 | 168.89 | 169.50 | 169.50 | 169.50 | ||
| 注：森林面积、森林覆盖率、人均森林面积、活立木蓄积量、森林蓄积量数据由林草湿调查监测工作产生，并由国家林业局统一发布各省林草湿调查监测成果，2022年、2023年相关数据尚未发布。 | ||||||||||
| Notes: The data on forest area, forest coverage, per capita forest area, standing timber volume, and forest volume are generated by the forest and grass moisture survey and monitoring work, and the results of forest and | ||||||||||
| grass moisture survey and monitoring in each province are uniformly released by the National Forestry Administration. The relevant data for 2022 and 2023 have not been released yet. | ||||||||||