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遥感技术是估测区域森林植被生物量的有效手段之一.本研究应用2007年9月TM影像数据,结合森林地上生物量实测数据,建立了研究区道孚县木茹林场森林植被地上部分碳储量模型.结果表明研究区森林植被总碳储量为1.73 TgC,其中亚高山针叶林、阔叶林和灌木林碳储量分别为1.26、0.11和0.36 TgC,针叶林占总碳储量的72.83%,是该区域的最大森林植被碳库.研究区域森林植被碳储量随海拔变化表现为以海拔3 400-3 800 m为中心向两极递减,随坡度变化表现为陡坡>斜坡>急坡>缓坡>平坡>险坡,随坡向变化表现为阴坡>半阳坡>半阴坡>阳坡>无坡向.植被碳密度随海拔梯度变化未表现出明显的规律,因坡向不同差异不大,但不同植被类型因坡向不同,碳密度差异较大,植被碳密度随坡度的增大呈增加的趋势.
Remote sensing technology is one of the effective methods to estimate the biomass of forest vegetation in this area.Using the TM image data of September 2007 and the measured data of forest aboveground biomass, the aboveground carbon of forest vegetation in Muru Forest Farm of Daofu County was established The results showed that the total carbon storage of forest vegetation in the study area was 1.73 TgC, of which the carbon stocks of subalpine coniferous forests, broad-leaved forests and shrubs were 1.26, 0.11 and 0.36 TgC, respectively, and the coniferous forests accounted for 72.83% , Which is the largest carbon sequestration of forest vegetation in this area.The carbon stocks of forest vegetation in the study area decreased with the elevation at 3 400-3 800 m ascended to the poles, and steep slope> slope> steep slope> gentle slope> Flat slope> slope, with the change of slope showed shady slope> semi-sunny slope> semi-shady slope> sunny slope> no slope.The vegetation density did not show obvious regularity with altitude gradient, However, the different vegetation types have different carbon density due to different slope orientation. The vegetation carbon density increases with the increase of slope degree.