(1) Slope Gradient Constraint: Limitations due to steepness of slope can impact which landscapes can be used for certain land use practices. In Lab08, you generated a slope gradient raster data set from TC_elev_utm83. Now, you will reclassify the continuous raster that will yield two slope gradient classes indicating “Suitable” (<=15%) and “Unsuitable” (>15%) landscapes for bio-fuel crop production.
(2) Land Use/Land Cover Constraint: Limitations due to existing, intensive or inappropriate land use activities need to be assessed. From the Landcov10 raster data set that you produced back in Lab 4, you will now further generalize the land cover types into “Suitable” (Agriculture) and “Unsuitable” (Developed, Extractive, Forest, Outdoor Recreation, Water Resources) landscapes for bio-fuel crop production.
(3) Protected Areas Constraint: To minimize impacts to sensitive environmental areas or those protected by land use policies, landscapes greater than 100 meters away from protected areas will be considered suitable and those areas within 100 meters will be considered unsuitable for bio-fuel crop production. We will use the official version of the Unique Natural Areas feature class (Official_UNA_utm83) as our protected area constraints and will buffer each polygon by 100 meters to define zones that are suitable and unsuitable for agro-ecological practices. We then need to subset the buffered UNAs by the extent of Tompkins County.
（1） 坡度限制：由於坡度的限制，可能會影響某些土地使用實踐中使用的景觀。在Lab08中，您從TC_elev_utm83生成了坡度光柵數據集。現在，您將重新分類連續光柵，該光柵將產生兩個坡度等級，指示生物燃料作物生產的“合適”（<=15%）和“不合適”（>15%）景觀。
（2） 土地利用/土地覆蓋限制：需要評估現有、密集或不適當的土地利用活動造成的限制。從您在實驗室4中生成的Landcov10光柵數據集中，您現在將進一步將土地覆蓋類型概括爲用於生物燃料作物生產的“適宜”（農業）和“不適宜”（開發、採掘、森林、戶外娛樂、水資源）景觀。
（3） 保護區限制：爲儘量減少對敏感環境區或土地利用政策保護區的影響，距保護區100米以上的景觀視爲適宜，100米以內的景觀視爲不適宜生物燃料作物生產。我們將使用官方版本的獨特自然區域特徵類（官方_UNA_utm83）作爲保護區限制條件，並將每個多邊形緩衝100米，以確定適合和不適合農業生態實踐的區域。然後我們需要根據湯普金斯縣的範圍對緩衝的una進行子集。
In Raster Calculator:
("TC_slope_suit" == 1) & ("TC_lc_suit" == 1)
求交集
("TC_slopelc_suit" == 1) & ("TC_UNA_10" == - 1)
