🌲 林業資源工具

🌴 單株立木材積計算器Tree Volume 輸入胸徑與樹高，按一元/二元材積表或實驗形數法、望高法計算單株立木材積，並對比多種公式結果，用於單木出材量估算。Tree Volume - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Forestry tools. 🪵 原木材積計算器Log Volume 輸入原木小頭直徑與材長，按國家 GB4814-84 標準公式（含多個徑級公式）計算單根材積並支援多根彙總，用於原木檢尺與木材貿易計量。Log Volume - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Forestry tools. 🌲 林分密度結構Density 5 輸入樣地面積、株數、平均胸徑，計算每公頃株數、林分密度指數（SDI）和林分斷面積Density 5 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Forestry tools. 🌳 林分蓄積量計算器Forest Volume 選擇角規測樹、標準地法或平均實驗形數法，輸入胸徑、樹高與形數等，計算林分每公頃蓄積量，用於森林資源調查與採伐量評估。Forest Volume - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Forestry tools. 🗺️ 林地面積計算器Forest Area 輸入林地形狀尺寸或 GPS 邊界座標，計算面積並支援坡地投影改平，可在畝、公頃、平方米間換算，用於林地確權、造林規劃與資源調查。Forest Area - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Forestry tools. 🌲 林權面積勘測Area 18 輸入林地多邊形頂點座標（每行一個，格式 x,y），按順時針或逆時針順序排列，自動計算面積和周長Area 18 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Forestry tools. 📈 樹木生長率計算器Growth Rate 輸入前後兩次測定的材積與時間間隔，按普雷斯勒公式、複利公式等計算樹木連年生長量與平均生長量及生長率，用於林木生長監測與成熟齡判斷。Growth Rate - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Forestry tools. 🎋 樹齡估算器Tree Age 選擇年輪法、生長錐法或胸徑迴歸法，輸入相應引數估算樹木年齡，用於林木資產評估、古樹鑑定與生長研究。Tree Age - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Forestry tools. 🌍 森林碳匯計算器Carbon Sequestration 輸入林分蓄積、木材密度與含碳係數，按生物量—碳儲量—CO₂當量鏈條估算森林碳匯量與可交易的碳匯價值，用於林業碳匯專案核算。Carbon Sequestration - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Forestry tools. 🌲 森林鬱閉度計算Forest Canopy Closure Calculator 按樣點法統計樹冠遮蔽比例估算鬱閉度（0~1），支援樣點佈設與結果校驗，用於森林資源調查與林分密度評估，純前端。Estimate canopy closure by point sampling. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Forestry tools. 🌲 生物多樣性 Shannon 指數Biodiversity Shannon Index 生物多樣性 Shannon 指數計算器。輸入各物種個體數，計算 Shannon-Wiener 多樣性指數、Pielou 均勻度、Simpson 優勢度與 Margalef 豐富度，用於群落生態學研究。Compute the Shannon diversity index for species communities. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Fore... 🌲 病蟲害監測Pest 1 記錄樣株病蟲害等級與發生率，按輕度中度重度統計發生面積與趨勢，輔助林地管護決策，純前端登記資料不出境。Pest 1 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Forestry tools. 🌲 經濟林產量預測Yield 輸入種植面積、每畝株數、單株產量與單價，預測經濟林總產量與總產值，用於果園、油茶等經濟林經營規劃與收益測算。Yield - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Forestry tools. 🌲 蓄積量估算Estimate 32 輸入樣地面積、平均胸徑、平均樹高與株數，採用實驗形數法估算單株材積與單位面積蓄積量，用於森林資源調查與林分評估。Estimate 32 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Forestry tools. 🌲 負離子濃度評估Concentration 5 輸入空氣負離子濃度(個/cm³)評估空氣質量等級與森林康養適宜性，用於景區環境評價、康養基地選址與生態監測參考。Concentration 5 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Forestry tools. 🌲 造林密度最佳化Density 6 輸入株距、行距、造林面積、單株苗木成本，計算每畝株數、總株數和造林成本Density 6 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Forestry tools. 🌲 造林密度計算器Planting Density 輸入樹種、立地條件與株行距，計算單位面積造林株數並推薦適宜密度，避免過密或過稀，用於造林設計與苗木需求測算。Planting Density - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Forestry tools. 🌲 採伐強度設計Strength 4 輸入林分蓄積量、採伐比例和迴歸年（採伐週期），計算採伐量、保留蓄積量和年均允許採伐量Strength 4 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Forestry tools. 🌲 野生動物種群估算Estimate 33 輸入樣線長度、單側平均發現距離、觀測到的痕跡/個體數，採用樣線法估算種群密度Estimate 33 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Forestry tools. 📏 鋸材材積計算器Timber Volume 按 GB4815-84 標準計算板方材材積，支援批次彙總、出材率與重量估算，用於鋸材交易、倉儲與加工配料核算。Timber Volume - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Forestry tools.