本文選題：錫林郭勒國家級自然保護(hù)區(qū) + 植被類型��； 參考：《內(nèi)蒙古大學(xué)》2017年碩士論文

【摘要】：錫林郭勒草原國家級自然保護(hù)區(qū)建設(shè)對于草原及其毗鄰渾善達(dá)克沙地生態(tài)系統(tǒng)的保護(hù)具有重要意義,但其建設(shè)成效尚缺失定量評估。本文選取植被類型、植被覆蓋度和地上凈初級生產(chǎn)力等指標(biāo),運(yùn)用3S技術(shù),結(jié)合ArcGIS和ENVI等地理信息系統(tǒng)軟件,分析錫林郭勒草原國家級自然保護(hù)區(qū)建立和調(diào)整前后植被類型空間變化情況、植被覆蓋度和植被凈初級生產(chǎn)力的變化趨勢,并結(jié)合氣候因素、人為因素和社會因素對錫林郭勒草原國家自然保護(hù)區(qū)建設(shè)成效進(jìn)行了定量評估,以期為自然保護(hù)區(qū)的管理提供理論依據(jù)和技術(shù)支撐。本文取得如下主要研究結(jié)果:(1)1984-2004年間每種植被類型的保有率較小,整體每種植被類型變化幅度較大,2004-2015年間,每種植被類型的保有率增加,整體植被類型變化幅度減小,其他(城鎮(zhèn)居民等)地區(qū)向典型草原轉(zhuǎn)移明顯,整體呈現(xiàn)好轉(zhuǎn)趨勢。(2)保護(hù)區(qū)建立前后,植被覆蓋度主要由Ⅰ級和Ⅱ級向Ⅲ級轉(zhuǎn)變,顯著增加和極顯著增加的面積以及非常穩(wěn)定和穩(wěn)定地區(qū)的面積大幅度增加。在保護(hù)區(qū)調(diào)整后,植被覆蓋度主要由Ⅱ級和Ⅲ級向Ⅳ級和V級轉(zhuǎn)變,顯著增加和極顯著增加的面積以及非常穩(wěn)定和穩(wěn)定地區(qū)的面積也呈現(xiàn)了增加的趨勢,植被覆蓋度正在向著顯著增加和穩(wěn)定的方向發(fā)展。(3)保護(hù)區(qū)范圍調(diào)整前后,植被凈初級生產(chǎn)力顯著增加和極顯著增加的面積以及非常穩(wěn)定和穩(wěn)定的面積在增加,2000年以后整個保護(hù)區(qū)的植被凈初級生產(chǎn)力是向著增加的方向發(fā)展的。(4)1984、2004年和2015年三個年份生態(tài)保護(hù)狀況指數(shù)(NEI)逐漸增加,保護(hù)區(qū)范圍調(diào)整后增加幅度最大,保護(hù)區(qū)建設(shè)成效以及范圍調(diào)整后保護(hù)成效顯著。
[Abstract]:The construction of Xilingol grassland National Nature Reserve is of great significance for the protection of grassland and its adjacent Hunshandak sandy land ecosystem, but its construction effect is still missing quantitative evaluation. In this paper, we select vegetation types, vegetation coverage and net primary productivity on the ground, using 3s technology, combined with GIS software such as ArcGIS and ENVI. The spatial changes of vegetation types, vegetation coverage and net primary productivity of vegetation were analyzed before and after the establishment and adjustment of Xilinguole grassland National Nature Reserve, and the climatic factors were combined. In order to provide theoretical basis and technical support for the management of the national nature reserve in Xilingole grassland, the effect of the construction of the national nature reserve is evaluated quantitatively by human factors and social factors in order to provide theoretical basis and technical support for the management of the natural reserve. The main results of this paper are as follows: during the period 1984-2004, the retention rate of each vegetation type is relatively small, and the change range of the whole vegetation type is larger than that of the whole vegetation type. During the period 2004-2015, the retention rate of each vegetation type increases, and the change range of the whole vegetation type decreases. Before and after the establishment of the reserve, the vegetation coverage mainly changed from grade 鈪，

本文編號：1806142